v3.8.0.1
Schedule III - Real Estate Assets and Accumulated Depreciation (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 68,470      
Initial Costs to Company, Land 348,238      
Initial Costs to Company, Buildings and Improvements 1,951,469      
Costs Capitalized Subsequent to Acquisition, Land 702      
Costs Capitalized Subsequent to Acquisition, Improvements 34,115      
Gross Amount at Which Carried at Close of Period, Land 348,940      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,985,584      
Total 2,334,524 $ 1,743,403 $ 1,306,515 $ 833,238
Accumulated Depreciation 148,383 $ 105,703 $ 70,171 $ 46,831
17512 US Highway 441, Mt. Dora | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land 477      
Initial Costs to Company, Buildings and Improvements 691      
Gross Amount at Which Carried at Close of Period, Land 477      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 691      
Total 1,168      
Accumulated Depreciation $ 66      
Date of Construction 1987      
Date Acquired 2015      
17512 US Highway 441, Mt. Dora | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
17512 US Highway 441, Mt. Dora | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
17560 US Highway 441, Mt. Dora | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,338      
Initial Costs to Company, Buildings and Improvements 4,788      
Gross Amount at Which Carried at Close of Period, Land 1,338      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,788      
Total 6,126      
Accumulated Depreciation $ 349      
Date of Construction 1988      
Date Acquired 2015      
17560 US Highway 441, Mt. Dora | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
17560 US Highway 441, Mt. Dora | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
17556 SE 109th Terrace Road, Summerfield | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 295      
Initial Costs to Company, Buildings and Improvements 2,146      
Gross Amount at Which Carried at Close of Period, Land 295      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,146      
Total 2,441      
Accumulated Depreciation $ 157      
Date of Construction 2000      
Date Acquired 2015      
17556 SE 109th Terrace Road, Summerfield | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
17556 SE 109th Terrace Road, Summerfield | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
9650 Mayflower Park Drive, Carmel | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 243      
Initial Costs to Company, Buildings and Improvements 3,519      
Gross Amount at Which Carried at Close of Period, Land 243      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,519      
Total 3,762      
Accumulated Depreciation $ 212      
Date of Construction 2006      
Date Acquired 2016      
9650 Mayflower Park Drive, Carmel | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
9650 Mayflower Park Drive, Carmel | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
17560 SE 109th Terrace Road, Summerfield | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 362      
Initial Costs to Company, Buildings and Improvements 2,632      
Gross Amount at Which Carried at Close of Period, Land 362      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,632      
Total 2,994      
Accumulated Depreciation $ 192      
Date of Construction 2008      
Date Acquired 2015      
17560 SE 109th Terrace Road, Summerfield | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
17560 SE 109th Terrace Road, Summerfield | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
600 North 14th Street, Leesburg | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 402      
Initial Costs to Company, Buildings and Improvements 1,869      
Gross Amount at Which Carried at Close of Period, Land 402      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,869      
Total 2,271      
Accumulated Depreciation $ 145      
Date of Construction 1994      
Date Acquired 2015      
600 North 14th Street, Leesburg | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
600 North 14th Street, Leesburg | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
2420 W Baseline Road, Tempe | AZ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,181      
Initial Costs to Company, Buildings and Improvements 14,580      
Gross Amount at Which Carried at Close of Period, Land 1,181      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 14,580      
Total 15,761      
Accumulated Depreciation $ 1,107      
Date of Construction 2006      
Date Acquired 2015      
2420 W Baseline Road, Tempe | AZ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
2420 W Baseline Road, Tempe | AZ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
300 E. Wilson Bridge Road, Worthington | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 264      
Initial Costs to Company, Buildings and Improvements 12,053      
Gross Amount at Which Carried at Close of Period, Land 264      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 12,053      
Total 12,317      
Accumulated Depreciation $ 543      
Date of Construction 1979      
Date Acquired 2016      
300 E. Wilson Bridge Road, Worthington | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
300 E. Wilson Bridge Road, Worthington | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
1321 Centerview Circle, Copley | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 104      
Initial Costs to Company, Buildings and Improvements 6,359      
Gross Amount at Which Carried at Close of Period, Land 104      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,359      
Total 6,463      
Accumulated Depreciation $ 67      
Date of Construction 1996      
Date Acquired 2017      
1321 Centerview Circle, Copley | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
1321 Centerview Circle, Copley | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
14000 Keystone Parkway, Cleveland | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 323      
Initial Costs to Company, Buildings and Improvements 2,744      
Gross Amount at Which Carried at Close of Period, Land 323      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,744      
Total 3,067      
Accumulated Depreciation $ 32      
Date of Construction 2007      
Date Acquired 2017      
14000 Keystone Parkway, Cleveland | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
14000 Keystone Parkway, Cleveland | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
2680 W. Libery St., Girard | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 75      
Initial Costs to Company, Buildings and Improvements 1,107      
Gross Amount at Which Carried at Close of Period, Land 75      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,107      
Total 1,182      
Accumulated Depreciation $ 15      
Date of Construction 2003      
Date Acquired 2017      
2680 W. Libery St., Girard | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
2680 W. Libery St., Girard | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
621 Rose Street, Lincoln | NE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,300      
Initial Costs to Company, Buildings and Improvements 13,163      
Gross Amount at Which Carried at Close of Period, Land 1,300      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,163      
Total 14,463      
Accumulated Depreciation $ 955      
Date of Construction 1973      
Date Acquired 2015      
621 Rose Street, Lincoln | NE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
621 Rose Street, Lincoln | NE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
2714 Springboro West Road, Moraine | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 336      
Initial Costs to Company, Buildings and Improvements 3,654      
Gross Amount at Which Carried at Close of Period, Land 336      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,654      
Total 3,990      
Accumulated Depreciation $ 14      
Date of Construction 2017      
Date Acquired 2017      
2714 Springboro West Road, Moraine | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
2714 Springboro West Road, Moraine | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
1120 Welch Road, Commerce Township | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 412      
Initial Costs to Company, Buildings and Improvements 1,935      
Gross Amount at Which Carried at Close of Period, Land 412      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,935      
Total 2,347      
Accumulated Depreciation $ 8      
Date of Construction 2007      
Date Acquired 2017      
1120 Welch Road, Commerce Township | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
1120 Welch Road, Commerce Township | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
33100 S. Gratiot Avenue, Clinton Township | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 396      
Initial Costs to Company, Buildings and Improvements 6,694      
Costs Capitalized Subsequent to Acquisition, Improvements 35      
Gross Amount at Which Carried at Close of Period, Land 396      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,729      
Total 7,125      
Accumulated Depreciation $ 126      
Date of Construction 2016      
Date Acquired 2017      
33100 S. Gratiot Avenue, Clinton Township | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
33100 S. Gratiot Avenue, Clinton Township | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
35184 Central City Pkwy, Westland | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 394      
Initial Costs to Company, Buildings and Improvements 6,106      
Gross Amount at Which Carried at Close of Period, Land 394      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,106      
Total 6,500      
Accumulated Depreciation $ 110      
Date of Construction 1994      
Date Acquired 2017      
35184 Central City Pkwy, Westland | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
35184 Central City Pkwy, Westland | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 12940 Prosperity Avenue Becker | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 750      
Initial Costs to Company, Land 921      
Initial Costs to Company, Buildings and Improvements 4,540      
Gross Amount at Which Carried at Close of Period, Land 921      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,540      
Total 5,461      
Accumulated Depreciation $ 1,267      
Date of Construction 2000      
Date Acquired 2008      
Industrial Properties | 12940 Prosperity Avenue Becker | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 12940 Prosperity Avenue Becker | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4401 South Orchard Street Tacoma | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,634      
Initial Costs to Company, Buildings and Improvements 4,902      
Gross Amount at Which Carried at Close of Period, Land 1,634      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,902      
Total 6,536      
Accumulated Depreciation $ 1,075      
Date of Construction 1977      
Date Acquired 2011      
Industrial Properties | 4401 South Orchard Street Tacoma | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4401 South Orchard Street Tacoma | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2110 Summit Street New Haven | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 445      
Initial Costs to Company, Buildings and Improvements 2,521      
Gross Amount at Which Carried at Close of Period, Land 445      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,521      
Total 2,966      
Accumulated Depreciation $ 647      
Date of Construction 1960      
Date Acquired 2011      
Industrial Properties | 2110 Summit Street New Haven | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2110 Summit Street New Haven | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Zero Eight Zero Zero World Trade Blvd Morrisville | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,034      
Initial Costs to Company, Buildings and Improvements 8,137      
Gross Amount at Which Carried at Close of Period, Land 2,034      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,137      
Total 10,171      
Accumulated Depreciation $ 1,499      
Date of Construction 1999      
Date Acquired 2012      
Industrial Properties | One Zero Eight Zero Zero World Trade Blvd Morrisville | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Zero Eight Zero Zero World Trade Blvd Morrisville | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 800 Howerton Lane Eureka | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,328      
Initial Costs to Company, Buildings and Improvements 9,311      
Gross Amount at Which Carried at Close of Period, Land 2,328      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,311      
Total 11,639      
Accumulated Depreciation $ 2,342      
Date of Construction 1990      
Date Acquired 2012      
Industrial Properties | 800 Howerton Lane Eureka | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 800 Howerton Lane Eureka | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One One Zero Five Zero W L Y Bldg P Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 690      
Initial Costs to Company, Buildings and Improvements 2,071      
Gross Amount at Which Carried at Close of Period, Land 690      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,071      
Total 2,761      
Accumulated Depreciation $ 355      
Date of Construction 2007      
Date Acquired 2012      
Industrial Properties | One One Zero Five Zero W L Y Bldg P Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One One Zero Five Zero W L Y Bldg P Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2001 T.W. Alexander Drive | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 11,670      
Initial Costs to Company, Land 3,000      
Initial Costs to Company, Buildings and Improvements 17,531      
Gross Amount at Which Carried at Close of Period, Land 3,000      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 17,531      
Total 20,531      
Accumulated Depreciation $ 3,437      
Date of Construction 2009      
Date Acquired 2012      
Industrial Properties | 2001 T.W. Alexander Drive | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2001 T.W. Alexander Drive | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One One Zero Five Zero W L Y Bldg S Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 704      
Initial Costs to Company, Buildings and Improvements 2,113      
Gross Amount at Which Carried at Close of Period, Land 704      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,113      
Total 2,817      
Accumulated Depreciation $ 348      
Date of Construction 2007      
Date Acquired 2012      
Industrial Properties | One One Zero Five Zero W L Y Bldg S Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One One Zero Five Zero W L Y Bldg S Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One One Six Six Commerce Blvd American Canyon | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 9,168      
Initial Costs to Company, Land 2,378      
Initial Costs to Company, Buildings and Improvements 26,144      
Gross Amount at Which Carried at Close of Period, Land 2,378      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 26,144      
Total 28,522      
Accumulated Depreciation $ 4,479      
Date of Construction 2002      
Date Acquired 2012      
Industrial Properties | One One Six Six Commerce Blvd American Canyon | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One One Six Six Commerce Blvd American Canyon | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1120 Marvin A. Smith Road Kilgore | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 160      
Initial Costs to Company, Buildings and Improvements 908      
Gross Amount at Which Carried at Close of Period, Land 160      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 908      
Total 1,068      
Accumulated Depreciation $ 221      
Date of Construction 2008      
Date Acquired 2012      
Industrial Properties | 1120 Marvin A. Smith Road Kilgore | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1120 Marvin A. Smith Road Kilgore | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 7700 New Carlisle Pike Huber Heights | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 583      
Initial Costs to Company, Buildings and Improvements 1,748      
Gross Amount at Which Carried at Close of Period, Land 583      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,748      
Total 2,331      
Accumulated Depreciation $ 420      
Date of Construction 1985      
Date Acquired 2012      
Industrial Properties | 7700 New Carlisle Pike Huber Heights | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 7700 New Carlisle Pike Huber Heights | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Zero Five Five Zero S Sam Houston Pkwy W Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,250      
Initial Costs to Company, Buildings and Improvements 9,751      
Gross Amount at Which Carried at Close of Period, Land 3,250      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,751      
Total 13,001      
Accumulated Depreciation $ 1,489      
Date of Construction 2005      
Date Acquired 2012      
Industrial Properties | One Zero Five Five Zero S Sam Houston Pkwy W Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Zero Five Five Zero S Sam Houston Pkwy W Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 34000 Melinz Parkway Eastlake | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 854      
Initial Costs to Company, Buildings and Improvements 2,562      
Gross Amount at Which Carried at Close of Period, Land 854      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,562      
Total 3,416      
Accumulated Depreciation $ 526      
Date of Construction 1981      
Date Acquired 2012      
Industrial Properties | 34000 Melinz Parkway Eastlake | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 34000 Melinz Parkway Eastlake | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Eight Zero Zero N Mason Road Katy | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,978      
Initial Costs to Company, Buildings and Improvements 7,912      
Gross Amount at Which Carried at Close of Period, Land 1,978      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,912      
Total 9,890      
Accumulated Depreciation $ 1,214      
Date of Construction 2012      
Date Acquired 2012      
Industrial Properties | One Eight Zero Zero N Mason Road Katy | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Eight Zero Zero N Mason Road Katy | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1400 13th Avenue Union Grove | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 239      
Initial Costs to Company, Buildings and Improvements 957      
Gross Amount at Which Carried at Close of Period, Land 239      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 957      
Total 1,196      
Accumulated Depreciation $ 140      
Date of Construction 1993      
Date Acquired 2012      
Industrial Properties | 1400 13th Avenue Union Grove | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1400 13th Avenue Union Grove | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1525 11th Avenue Union Grove | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 347      
Initial Costs to Company, Buildings and Improvements 1,386      
Gross Amount at Which Carried at Close of Period, Land 347      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,386      
Total 1,733      
Accumulated Depreciation $ 195      
Date of Construction 1979      
Date Acquired 2012      
Industrial Properties | 1525 11th Avenue Union Grove | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1525 11th Avenue Union Grove | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Four Five Zero Thirteenth Avenue Union Grove | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 427      
Initial Costs to Company, Buildings and Improvements 3,413      
Gross Amount at Which Carried at Close of Period, Land 427      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,413      
Total 3,840      
Accumulated Depreciation $ 324      
Date of Construction 2014      
Date Acquired 2015      
Industrial Properties | One Four Five Zero Thirteenth Avenue Union Grove | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Four Five Zero Thirteenth Avenue Union Grove | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1550 Cedar Line Drive Rock Hill | SC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 796      
Initial Costs to Company, Buildings and Improvements 3,184      
Costs Capitalized Subsequent to Acquisition, Improvements 72      
Gross Amount at Which Carried at Close of Period, Land 796      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,256      
Total 4,052      
Accumulated Depreciation $ 642      
Date of Construction 1999      
Date Acquired 2012      
Industrial Properties | 1550 Cedar Line Drive Rock Hill | SC | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1550 Cedar Line Drive Rock Hill | SC | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Five Zero One Barrington Road Hoffman Estates | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 12,253      
Initial Costs to Company, Buildings and Improvements 23,456      
Gross Amount at Which Carried at Close of Period, Land 12,253      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 23,456      
Total 35,709      
Accumulated Depreciation $ 3,581      
Date of Construction 1988      
Date Acquired 2013      
Industrial Properties | Two Five Zero One Barrington Road Hoffman Estates | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Five Zero One Barrington Road Hoffman Estates | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1325 West Fernau Avenue Oshkosh | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 456      
Initial Costs to Company, Buildings and Improvements 869      
Gross Amount at Which Carried at Close of Period, Land 456      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 869      
Total 1,325      
Accumulated Depreciation $ 79      
Date of Construction 2007      
Date Acquired 2015      
Industrial Properties | 1325 West Fernau Avenue Oshkosh | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1325 West Fernau Avenue Oshkosh | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Two Eight One Port City Blvd Muskegon | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 463      
Initial Costs to Company, Buildings and Improvements 2,512      
Costs Capitalized Subsequent to Acquisition, Improvements 23      
Gross Amount at Which Carried at Close of Period, Land 463      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,535      
Total 2,998      
Accumulated Depreciation $ 372      
Date of Construction 1978      
Date Acquired 2013      
Industrial Properties | Two Two Eight One Port City Blvd Muskegon | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Two Eight One Port City Blvd Muskegon | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1985 E. Laketon Avenue Muskegon | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 168      
Initial Costs to Company, Buildings and Improvements 2,751      
Costs Capitalized Subsequent to Acquisition, Improvements 13      
Gross Amount at Which Carried at Close of Period, Land 168      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,764      
Total 2,932      
Accumulated Depreciation $ 376      
Date of Construction 1985      
Date Acquired 2013      
Industrial Properties | 1985 E. Laketon Avenue Muskegon | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1985 E. Laketon Avenue Muskegon | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2121 Latimer Drive Muskegon | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 454      
Initial Costs to Company, Buildings and Improvements 6,889      
Costs Capitalized Subsequent to Acquisition, Improvements 3      
Gross Amount at Which Carried at Close of Period, Land 454      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,892      
Total 7,346      
Accumulated Depreciation $ 962      
Date of Construction 2012      
Date Acquired 2013      
Industrial Properties | 2121 Latimer Drive Muskegon | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2121 Latimer Drive Muskegon | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Zero Eight One King Street Greenwich | CONNECTICUT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 16,898      
Initial Costs to Company, Buildings and Improvements 959      
Gross Amount at Which Carried at Close of Period, Land 16,898      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 959      
Total 17,857      
Accumulated Depreciation $ 131      
Date of Construction 1967      
Date Acquired 2014      
Industrial Properties | One Zero Eight One King Street Greenwich | CONNECTICUT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Zero Eight One King Street Greenwich | CONNECTICUT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Four Zero One Madeline Lane Elgin | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 4,339      
Initial Costs to Company, Buildings and Improvements 17,458      
Gross Amount at Which Carried at Close of Period, Land 4,339      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 17,458      
Total 21,797      
Accumulated Depreciation $ 1,883      
Date of Construction 2009      
Date Acquired 2014      
Industrial Properties | One Four Zero One Madeline Lane Elgin | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Four Zero One Madeline Lane Elgin | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2350 Black Creek Drive Muskegon | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 257      
Initial Costs to Company, Buildings and Improvements 655      
Gross Amount at Which Carried at Close of Period, Land 257      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 655      
Total 912      
Accumulated Depreciation $ 104      
Date of Construction 2005      
Date Acquired 2013      
Industrial Properties | 2350 Black Creek Drive Muskegon | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2350 Black Creek Drive Muskegon | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Five Five Zero Dean Lakes Road Shakopee | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,962      
Initial Costs to Company, Buildings and Improvements 21,296      
Gross Amount at Which Carried at Close of Period, Land 3,962      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 21,296      
Total 25,258      
Accumulated Depreciation $ 2,407      
Date of Construction 2014      
Date Acquired 2014      
Industrial Properties | Five Five Zero Dean Lakes Road Shakopee | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Five Five Zero Dean Lakes Road Shakopee | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 711 E. Porter Road Norton Shores | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 198      
Initial Costs to Company, Buildings and Improvements 2,932      
Gross Amount at Which Carried at Close of Period, Land 198      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,932      
Total 3,130      
Accumulated Depreciation $ 318      
Date of Construction 2002      
Date Acquired 2014      
Industrial Properties | 711 E. Porter Road Norton Shores | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 711 E. Porter Road Norton Shores | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 550 Canino Road Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,242      
Initial Costs to Company, Buildings and Improvements 2,698      
Gross Amount at Which Carried at Close of Period, Land 1,242      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,698      
Total 3,940      
Accumulated Depreciation $ 351      
Date of Construction 1972      
Date Acquired 2014      
Industrial Properties | 550 Canino Road Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 550 Canino Road Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1210 Innovation Drive Winona | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,653      
Initial Costs to Company, Buildings and Improvements 7,694      
Gross Amount at Which Carried at Close of Period, Land 1,653      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,694      
Total 9,347      
Accumulated Depreciation $ 697      
Date of Construction 2008      
Date Acquired 2014      
Industrial Properties | 1210 Innovation Drive Winona | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1210 Innovation Drive Winona | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 965 East Mark Street Winona | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 804      
Initial Costs to Company, Buildings and Improvements 4,412      
Gross Amount at Which Carried at Close of Period, Land 804      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,412      
Total 5,216      
Accumulated Depreciation $ 390      
Date of Construction 2008      
Date Acquired 2014      
Industrial Properties | 965 East Mark Street Winona | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 965 East Mark Street Winona | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 850 I-30 East Mt. Pleasant | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,785      
Initial Costs to Company, Buildings and Improvements 5,540      
Gross Amount at Which Carried at Close of Period, Land 1,785      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,540      
Total 7,325      
Accumulated Depreciation $ 558      
Date of Construction 1994      
Date Acquired 2014      
Industrial Properties | 850 I-30 East Mt. Pleasant | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 850 I-30 East Mt. Pleasant | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Eight Zero Zero Industrial Road Madill | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,657      
Initial Costs to Company, Buildings and Improvements 1,566      
Costs Capitalized Subsequent to Acquisition, Improvements 1,001      
Gross Amount at Which Carried at Close of Period, Land 2,657      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,567      
Total 5,224      
Accumulated Depreciation $ 163      
Date of Construction 1972      
Date Acquired 2014      
Industrial Properties | Eight Zero Zero Industrial Road Madill | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Eight Zero Zero Industrial Road Madill | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 200 County Road Madill | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,395      
Initial Costs to Company, Buildings and Improvements 5,796      
Gross Amount at Which Carried at Close of Period, Land 1,395      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,796      
Total 7,191      
Accumulated Depreciation $ 558      
Date of Construction 1999      
Date Acquired 2014      
Industrial Properties | 200 County Road Madill | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 200 County Road Madill | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 110 Pettijohn Road Madill | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 621      
Initial Costs to Company, Buildings and Improvements 1,759      
Gross Amount at Which Carried at Close of Period, Land 621      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,759      
Total 2,380      
Accumulated Depreciation $ 170      
Date of Construction 1977      
Date Acquired 2014      
Industrial Properties | 110 Pettijohn Road Madill | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 110 Pettijohn Road Madill | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 20975 US Hwy 80 (Industrial) Willis Point | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,102      
Initial Costs to Company, Buildings and Improvements 2,420      
Gross Amount at Which Carried at Close of Period, Land 3,102      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,420      
Total 5,522      
Accumulated Depreciation $ 288      
Date of Construction 2003      
Date Acquired 2014      
Industrial Properties | 20975 US Hwy 80 (Industrial) Willis Point | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 20975 US Hwy 80 (Industrial) Willis Point | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 223 Rip Wiley Road Fitzgerald | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,939      
Initial Costs to Company, Buildings and Improvements 3,316      
Gross Amount at Which Carried at Close of Period, Land 1,939      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,316      
Total 5,255      
Accumulated Depreciation $ 362      
Date of Construction 1997      
Date Acquired 2014      
Industrial Properties | 223 Rip Wiley Road Fitzgerald | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 223 Rip Wiley Road Fitzgerald | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 502 Midway Road Cordele | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,705      
Initial Costs to Company, Buildings and Improvements 3,786      
Gross Amount at Which Carried at Close of Period, Land 2,705      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,786      
Total 6,491      
Accumulated Depreciation $ 358      
Date of Construction 2000      
Date Acquired 2014      
Industrial Properties | 502 Midway Road Cordele | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 502 Midway Road Cordele | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Zero Three Titan Road Kingston | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,857      
Initial Costs to Company, Buildings and Improvements 1,692      
Gross Amount at Which Carried at Close of Period, Land 1,857      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,692      
Total 3,549      
Accumulated Depreciation $ 191      
Date of Construction 2013      
Date Acquired 2014      
Industrial Properties | One Zero Three Titan Road Kingston | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Zero Three Titan Road Kingston | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 13300 West I-20 East Odessa | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 529      
Initial Costs to Company, Buildings and Improvements 3,327      
Gross Amount at Which Carried at Close of Period, Land 529      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,327      
Total 3,856      
Accumulated Depreciation $ 296      
Date of Construction 2012      
Date Acquired 2015      
Industrial Properties | 13300 West I-20 East Odessa | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 13300 West I-20 East Odessa | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | N Eight Five W One Two Five Four Five Westbrook Crossing Menomonee Falls | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,378      
Initial Costs to Company, Buildings and Improvements 18,557      
Gross Amount at Which Carried at Close of Period, Land 1,378      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 18,557      
Total 19,935      
Accumulated Depreciation $ 1,489      
Date of Construction 2001      
Date Acquired 2015      
Industrial Properties | N Eight Five W One Two Five Four Five Westbrook Crossing Menomonee Falls | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | N Eight Five W One Two Five Four Five Westbrook Crossing Menomonee Falls | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 6625 Dobbin Road Columbia | MD        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 667      
Initial Costs to Company, Buildings and Improvements 9,220      
Gross Amount at Which Carried at Close of Period, Land 667      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,220      
Total 9,887      
Accumulated Depreciation $ 772      
Date of Construction 1984      
Date Acquired 2015      
Industrial Properties | 6625 Dobbin Road Columbia | MD | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 6625 Dobbin Road Columbia | MD | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One Zero Eight Zero Zero One Hundred And Seventy Fifth Avenue N W Elk River | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 763      
Initial Costs to Company, Buildings and Improvements 4,937      
Gross Amount at Which Carried at Close of Period, Land 763      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,937      
Total 5,700      
Accumulated Depreciation $ 469      
Date of Construction 2008      
Date Acquired 2015      
Industrial Properties | One Zero Eight Zero Zero One Hundred And Seventy Fifth Avenue N W Elk River | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One Zero Eight Zero Zero One Hundred And Seventy Fifth Avenue N W Elk River | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One One Zero Seven Four One Hundred Seven Nineth Avenue Elk River | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 477      
Initial Costs to Company, Buildings and Improvements 2,517      
Gross Amount at Which Carried at Close of Period, Land 477      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,517      
Total 2,994      
Accumulated Depreciation $ 239      
Date of Construction 2006      
Date Acquired 2015      
Industrial Properties | One One Zero Seven Four One Hundred Seven Nineth Avenue Elk River | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One One Zero Seven Four One Hundred Seven Nineth Avenue Elk River | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3401 St Johns Parkway Sanford | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,075      
Initial Costs to Company, Buildings and Improvements 7,600      
Gross Amount at Which Carried at Close of Period, Land 2,075      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,600      
Total 9,675      
Accumulated Depreciation $ 616      
Date of Construction 2002      
Date Acquired 2015      
Industrial Properties | 3401 St Johns Parkway Sanford | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3401 St Johns Parkway Sanford | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1001 10th Avenue Columbus | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 615      
Initial Costs to Company, Buildings and Improvements 9,942      
Gross Amount at Which Carried at Close of Period, Land 615      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,942      
Total 10,557      
Accumulated Depreciation $ 708      
Date of Construction 1907      
Date Acquired 2015      
Industrial Properties | 1001 10th Avenue Columbus | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1001 10th Avenue Columbus | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1761 Newport Road Ephrata | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 531      
Initial Costs to Company, Buildings and Improvements 6,995      
Gross Amount at Which Carried at Close of Period, Land 531      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,995      
Total 7,526      
Accumulated Depreciation $ 739      
Date of Construction 2000      
Date Acquired 2015      
Industrial Properties | 1761 Newport Road Ephrata | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1761 Newport Road Ephrata | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1761 Newport Road Ephrata | LA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 369      
Initial Costs to Company, Buildings and Improvements 3,275      
Gross Amount at Which Carried at Close of Period, Land 369      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,275      
Total 3,644      
Accumulated Depreciation $ 11      
Date of Construction 2016      
Date Acquired 2017      
Industrial Properties | 1761 Newport Road Ephrata | LA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1761 Newport Road Ephrata | LA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1990 Hood Road Greer | SC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 607      
Initial Costs to Company, Buildings and Improvements 2,502      
Gross Amount at Which Carried at Close of Period, Land 607      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,502      
Total 3,109      
Accumulated Depreciation $ 220      
Date of Construction 1978      
Date Acquired 2015      
Industrial Properties | 1990 Hood Road Greer | SC | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1990 Hood Road Greer | SC | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Seven Eight One Five Highway Blvd Katy | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,493      
Initial Costs to Company, Buildings and Improvements 3,883      
Gross Amount at Which Carried at Close of Period, Land 1,493      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,883      
Total 5,376      
Accumulated Depreciation $ 335      
Date of Construction 1996      
Date Acquired 2015      
Industrial Properties | Two Seven Eight One Five Highway Blvd Katy | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Seven Eight One Five Highway Blvd Katy | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3502 Enterprise Avenue Joplin | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 831      
Initial Costs to Company, Buildings and Improvements 9,600      
Gross Amount at Which Carried at Close of Period, Land 831      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,600      
Total 10,431      
Accumulated Depreciation $ 743      
Date of Construction 1993      
Date Acquired 2015      
Industrial Properties | 3502 Enterprise Avenue Joplin | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3502 Enterprise Avenue Joplin | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Three Zero Zero State Highway One Two One Euless | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,487      
Initial Costs to Company, Buildings and Improvements 3,051      
Gross Amount at Which Carried at Close of Period, Land 1,487      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,051      
Total 4,538      
Accumulated Depreciation $ 237      
Date of Construction 1991      
Date Acquired 2015      
Industrial Properties | Two Three Zero Zero State Highway One Two One Euless | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Three Zero Zero State Highway One Two One Euless | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2769 Rouse Road Kinston | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,017      
Initial Costs to Company, Buildings and Improvements 10,418      
Gross Amount at Which Carried at Close of Period, Land 1,017      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 10,418      
Total 11,435      
Accumulated Depreciation $ 775      
Date of Construction 1979      
Date Acquired 2015      
Industrial Properties | 2769 Rouse Road Kinston | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2769 Rouse Road Kinston | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1500 N Bolton Jacksonville | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,221      
Initial Costs to Company, Buildings and Improvements 3,316      
Gross Amount at Which Carried at Close of Period, Land 1,221      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,316      
Total 4,537      
Accumulated Depreciation $ 235      
Date of Construction 1974      
Date Acquired 2015      
Industrial Properties | 1500 N Bolton Jacksonville | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1500 N Bolton Jacksonville | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | One One Zero Nine E Industrial Drive Sulphur Springs | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,720      
Initial Costs to Company, Buildings and Improvements 20,756      
Gross Amount at Which Carried at Close of Period, Land 1,720      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 20,756      
Total 22,476      
Accumulated Depreciation $ 1,266      
Date of Construction 1989      
Date Acquired 2015      
Industrial Properties | One One Zero Nine E Industrial Drive Sulphur Springs | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | One One Zero Nine E Industrial Drive Sulphur Springs | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 651 Commerce Parkway Lima | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 656      
Initial Costs to Company, Buildings and Improvements 21,645      
Gross Amount at Which Carried at Close of Period, Land 656      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 21,645      
Total 22,301      
Accumulated Depreciation $ 1,321      
Date of Construction 2009      
Date Acquired 2015      
Industrial Properties | 651 Commerce Parkway Lima | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 651 Commerce Parkway Lima | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Six Two Zero Zero Glenn Carlson Drive St Cloud | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 565      
Initial Costs to Company, Buildings and Improvements 20,420      
Gross Amount at Which Carried at Close of Period, Land 565      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 20,420      
Total 20,985      
Accumulated Depreciation $ 736      
Date of Construction 1999      
Date Acquired 2016      
Industrial Properties | Six Two Zero Zero Glenn Carlson Drive St Cloud | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Six Two Zero Zero Glenn Carlson Drive St Cloud | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 6410 Ameriplex Drive Portage. | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,181      
Initial Costs to Company, Buildings and Improvements 13,130      
Gross Amount at Which Carried at Close of Period, Land 1,181      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,130      
Total 14,311      
Accumulated Depreciation $ 897      
Date of Construction 2001      
Date Acquired 2016      
Industrial Properties | 6410 Ameriplex Drive Portage. | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 6410 Ameriplex Drive Portage. | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Three Five Zero Alvin Drive New Kensington | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 907      
Initial Costs to Company, Buildings and Improvements 13,058      
Gross Amount at Which Carried at Close of Period, Land 907      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,058      
Total 13,965      
Accumulated Depreciation $ 412      
Date of Construction 2015      
Date Acquired 2016      
Industrial Properties | Three Five Zero Alvin Drive New Kensington | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Three Five Zero Alvin Drive New Kensington | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 5575 Logan Street, Denver | CO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,105      
Initial Costs to Company, Buildings and Improvements 8,076      
Gross Amount at Which Carried at Close of Period, Land 1,105      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,076      
Total 9,181      
Accumulated Depreciation $ 135      
Date of Construction 1975      
Date Acquired 2017      
Industrial Properties | 5575 Logan Street, Denver | CO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 5575 Logan Street, Denver | CO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 400 E. 56th Avenue, Denver | CO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 252      
Initial Costs to Company, Buildings and Improvements 1,658      
Gross Amount at Which Carried at Close of Period, Land 252      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,658      
Total 1,910      
Accumulated Depreciation $ 29      
Date of Construction 1977      
Date Acquired 2017      
Industrial Properties | 400 E. 56th Avenue, Denver | CO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 400 E. 56th Avenue, Denver | CO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | N116W18271 Morse Drive, Germantown | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 612      
Initial Costs to Company, Buildings and Improvements 2,062      
Gross Amount at Which Carried at Close of Period, Land 612      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,062      
Total 2,674      
Accumulated Depreciation $ 23      
Date of Construction 1989      
Date Acquired 2017      
Industrial Properties | N116W18271 Morse Drive, Germantown | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | N116W18271 Morse Drive, Germantown | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | N 118 W 18845 Bunsen Drive, Germantown | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 575      
Initial Costs to Company, Buildings and Improvements 2,086      
Gross Amount at Which Carried at Close of Period, Land 575      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,086      
Total 2,661      
Accumulated Depreciation $ 23      
Date of Construction 2000      
Date Acquired 2017      
Industrial Properties | N 118 W 18845 Bunsen Drive, Germantown | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | N 118 W 18845 Bunsen Drive, Germantown | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 900 Challanger Drive, Green Bay | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 406      
Initial Costs to Company, Buildings and Improvements 7,032      
Gross Amount at Which Carried at Close of Period, Land 406      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,032      
Total 7,438      
Accumulated Depreciation $ 78      
Date of Construction 1989      
Date Acquired 2017      
Industrial Properties | 900 Challanger Drive, Green Bay | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 900 Challanger Drive, Green Bay | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3420 Elvis Presley Boulevard, Memphis | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 530      
Initial Costs to Company, Buildings and Improvements 2,722      
Gross Amount at Which Carried at Close of Period, Land 530      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,722      
Total 3,252      
Accumulated Depreciation $ 718      
Date of Construction 1993      
Date Acquired 2009      
Industrial Properties | 3420 Elvis Presley Boulevard, Memphis | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3420 Elvis Presley Boulevard, Memphis | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4618 Woodland Drive, Two Rivers | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 445      
Initial Costs to Company, Buildings and Improvements 1,885      
Gross Amount at Which Carried at Close of Period, Land 445      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,885      
Total 2,330      
Accumulated Depreciation $ 26      
Date of Construction 1994      
Date Acquired 2017      
Industrial Properties | 4618 Woodland Drive, Two Rivers | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4618 Woodland Drive, Two Rivers | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3838 & 3900 Freedom Road, Little Chute | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 342      
Initial Costs to Company, Buildings and Improvements 52,744      
Gross Amount at Which Carried at Close of Period, Land 342      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 52,744      
Total 53,086      
Accumulated Depreciation $ 578      
Date of Construction 2017      
Date Acquired 2017      
Industrial Properties | 3838 & 3900 Freedom Road, Little Chute | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3838 & 3900 Freedom Road, Little Chute | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Industrial Properties | 4248 West Post Road, Las Vegas | NV        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,034      
Initial Costs to Company, Buildings and Improvements 11,856      
Gross Amount at Which Carried at Close of Period, Land 3,034      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 11,856      
Total 14,890      
Accumulated Depreciation $ 42      
Date of Construction 2017      
Date Acquired 2017      
Industrial Properties | 4248 West Post Road, Las Vegas | NV | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4248 West Post Road, Las Vegas | NV | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 30000 Industrial Drive, Walker | LA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 4,646      
Initial Costs to Company, Buildings and Improvements 30,310      
Gross Amount at Which Carried at Close of Period, Land 4,646      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 30,310      
Total 34,956      
Accumulated Depreciation $ 116      
Date of Construction 2017      
Date Acquired 2017      
Industrial Properties | 30000 Industrial Drive, Walker | LA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 30000 Industrial Drive, Walker | LA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 220 S. Noah Drive, Saxonburg | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,048      
Initial Costs to Company, Buildings and Improvements 7,545      
Gross Amount at Which Carried at Close of Period, Land 1,048      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,545      
Total 8,593      
Accumulated Depreciation $ 30      
Date of Construction 2008      
Date Acquired 2017      
Industrial Properties | 220 S. Noah Drive, Saxonburg | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 220 S. Noah Drive, Saxonburg | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 912 Pittsburgh Road, Butler | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,885      
Initial Costs to Company, Buildings and Improvements 6,294      
Gross Amount at Which Carried at Close of Period, Land 1,885      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,294      
Total 8,179      
Accumulated Depreciation $ 27      
Date of Construction 1990      
Date Acquired 2017      
Industrial Properties | 912 Pittsburgh Road, Butler | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 912 Pittsburgh Road, Butler | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1701 Broad Street, Store City | IA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 5,700      
Initial Costs to Company, Buildings and Improvements 13,916      
Gross Amount at Which Carried at Close of Period, Land 5,700      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,916      
Total 19,616      
Accumulated Depreciation $ 55      
Date of Construction 1997      
Date Acquired 2017      
Industrial Properties | 1701 Broad Street, Store City | IA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1701 Broad Street, Store City | IA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 30-32 Great Oaks Boulevard, San Jose | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 9,489      
Initial Costs to Company, Buildings and Improvements 18,617      
Costs Capitalized Subsequent to Acquisition, Improvements 727      
Gross Amount at Which Carried at Close of Period, Land 9,489      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,344      
Total 28,833      
Accumulated Depreciation $ 70      
Date of Construction 1983      
Date Acquired 2017      
Industrial Properties | 30-32 Great Oaks Boulevard, San Jose | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 30-32 Great Oaks Boulevard, San Jose | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,076      
Initial Costs to Company, Buildings and Improvements 3,226      
Gross Amount at Which Carried at Close of Period, Land 1,076      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,226      
Total 4,302      
Accumulated Depreciation $ 633      
Date of Construction 2005      
Date Acquired 2011      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 540      
Initial Costs to Company, Buildings and Improvements 1,647      
Gross Amount at Which Carried at Close of Period, Land 540      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,647      
Total 2,187      
Accumulated Depreciation $ 387      
Date of Construction 2005      
Date Acquired 2011      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 570 West Lanier Avenue, Fayetteville | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 865      
Initial Costs to Company, Buildings and Improvements 4,901      
Gross Amount at Which Carried at Close of Period, Land 865      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,901      
Total 5,766      
Accumulated Depreciation $ 1,289      
Date of Construction 1985      
Date Acquired 2008      
Industrial Properties | 570 West Lanier Avenue, Fayetteville | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 570 West Lanier Avenue, Fayetteville | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 16519 South Route 59, Plainfield | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 128      
Initial Costs to Company, Buildings and Improvements 7,843      
Costs Capitalized Subsequent to Acquisition, Land 702      
Costs Capitalized Subsequent to Acquisition, Improvements 1,489      
Gross Amount at Which Carried at Close of Period, Land 830      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,332      
Total 10,162      
Accumulated Depreciation $ 1,045      
Date of Construction 2012      
Date Acquired 2013      
Industrial Properties | 16519 South Route 59, Plainfield | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 16519 South Route 59, Plainfield | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 17323 Red Oak Drive, Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 1,813      
Initial Costs to Company, Land 598      
Initial Costs to Company, Buildings and Improvements 3,388      
Gross Amount at Which Carried at Close of Period, Land 598      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,388      
Total 3,986      
Accumulated Depreciation $ 863      
Date of Construction 1980      
Date Acquired 2008      
Industrial Properties | 17323 Red Oak Drive, Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 17323 Red Oak Drive, Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 9780 South Estrella Parkway, Goodyear | AZ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 558      
Initial Costs to Company, Buildings and Improvements 3,529      
Gross Amount at Which Carried at Close of Period, Land 558      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,529      
Total 4,087      
Accumulated Depreciation $ 430      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 9780 South Estrella Parkway, Goodyear | AZ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 9780 South Estrella Parkway, Goodyear | AZ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 22741 Professional Drive, Kingwood | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 253      
Initial Costs to Company, Buildings and Improvements 5,236      
Gross Amount at Which Carried at Close of Period, Land 253      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,236      
Total 5,489      
Accumulated Depreciation $ 486      
Date of Construction 2009      
Date Acquired 2014      
Industrial Properties | 22741 Professional Drive, Kingwood | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 22741 Professional Drive, Kingwood | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4640 Loop 289, Lubbock | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,616      
Initial Costs to Company, Buildings and Improvements 6,195      
Costs Capitalized Subsequent to Acquisition, Improvements 135      
Gross Amount at Which Carried at Close of Period, Land 1,616      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,330      
Total 7,946      
Accumulated Depreciation $ 568      
Date of Construction 2001      
Date Acquired 2014      
Industrial Properties | 4640 Loop 289, Lubbock | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4640 Loop 289, Lubbock | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3912 32nd Avenue, Hudsonville | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 199      
Initial Costs to Company, Buildings and Improvements 3,631      
Gross Amount at Which Carried at Close of Period, Land 199      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,631      
Total 3,830      
Accumulated Depreciation $ 286      
Date of Construction 2007      
Date Acquired 2015      
Industrial Properties | 3912 32nd Avenue, Hudsonville | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3912 32nd Avenue, Hudsonville | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1000 E. Riverside Boulevard, Loves Park | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 581      
Initial Costs to Company, Land 190      
Initial Costs to Company, Buildings and Improvements 890      
Gross Amount at Which Carried at Close of Period, Land 190      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 890      
Total 1,080      
Accumulated Depreciation $ 243      
Date of Construction 1982      
Date Acquired 2010      
Industrial Properties | 1000 E. Riverside Boulevard, Loves Park | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1000 E. Riverside Boulevard, Loves Park | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 5201 Northshore Drive, North Little Rock | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 532      
Initial Costs to Company, Buildings and Improvements 51,843      
Gross Amount at Which Carried at Close of Period, Land 532      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 51,843      
Total 52,375      
Accumulated Depreciation $ 2,986      
Date of Construction 2005      
Date Acquired 2015      
Industrial Properties | 5201 Northshore Drive, North Little Rock | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 5201 Northshore Drive, North Little Rock | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1421 Oakdale Road, Modesto | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 689      
Initial Costs to Company, Buildings and Improvements 19,200      
Gross Amount at Which Carried at Close of Period, Land 689      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,200      
Total 19,889      
Accumulated Depreciation $ 710      
Date of Construction 1984      
Date Acquired 2016      
Industrial Properties | 1421 Oakdale Road, Modesto | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1421 Oakdale Road, Modesto | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3475 S. Alpine Road, Rockford | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 216      
Initial Costs to Company, Buildings and Improvements 1,225      
Gross Amount at Which Carried at Close of Period, Land 216      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,225      
Total 1,441      
Accumulated Depreciation $ 339      
Date of Construction 1993      
Date Acquired 2008      
Industrial Properties | 3475 S. Alpine Road, Rockford | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3475 S. Alpine Road, Rockford | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 11475 N. 2nd Street, Machesny Prk | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 218      
Initial Costs to Company, Buildings and Improvements 1,237      
Gross Amount at Which Carried at Close of Period, Land 218      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,237      
Total 1,455      
Accumulated Depreciation $ 363      
Date of Construction 1996      
Date Acquired 2008      
Industrial Properties | 11475 N. 2nd Street, Machesny Prk | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 11475 N. 2nd Street, Machesny Prk | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Accounting Standards Update201515 | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 300      
Initial Costs to Company, Buildings and Improvements 4,273      
Gross Amount at Which Carried at Close of Period, Land 300      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,273      
Total 4,573      
Accumulated Depreciation $ 165      
Date of Construction 1984      
Date Acquired 2016      
Industrial Properties | Accounting Standards Update201515 | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Accounting Standards Update201515 | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 91 Brighton Woods Road, Pooler | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 272      
Initial Costs to Company, Buildings and Improvements 1,089      
Gross Amount at Which Carried at Close of Period, Land 272      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,089      
Total 1,361      
Accumulated Depreciation $ 272      
Date of Construction 1990      
Date Acquired 2009      
Industrial Properties | 91 Brighton Woods Road, Pooler | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 91 Brighton Woods Road, Pooler | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4719 North Habana Avenue Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 790      
Initial Costs to Company, Buildings and Improvements 4,021      
Gross Amount at Which Carried at Close of Period, Land 790      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,021      
Total 4,811      
Accumulated Depreciation $ 788      
Date of Construction 1985      
Date Acquired 2011      
Industrial Properties | 4719 North Habana Avenue Tampa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4719 North Habana Avenue Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Five Three Three Stephenson Avenue Savannah | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 160      
Initial Costs to Company, Buildings and Improvements 641      
Gross Amount at Which Carried at Close of Period, Land 160      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 641      
Total 801      
Accumulated Depreciation $ 162      
Date of Construction 1986      
Date Acquired 2009      
Industrial Properties | Five Three Three Stephenson Avenue Savannah | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Five Three Three Stephenson Avenue Savannah | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2324 Oak Myrtle Lane Wesley Chapel | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 340      
Initial Costs to Company, Buildings and Improvements 2,862      
Gross Amount at Which Carried at Close of Period, Land 340      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,862      
Total 3,202      
Accumulated Depreciation $ 568      
Date of Construction 2008      
Date Acquired 2011      
Industrial Properties | 2324 Oak Myrtle Lane Wesley Chapel | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2324 Oak Myrtle Lane Wesley Chapel | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Zero Six E Montgomery Crossroads Savannah | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 114      
Initial Costs to Company, Buildings and Improvements 457      
Gross Amount at Which Carried at Close of Period, Land 114      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 457      
Total 571      
Accumulated Depreciation $ 104      
Date of Construction 1978      
Date Acquired 2009      
Industrial Properties | Two Zero Six E Montgomery Crossroads Savannah | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Zero Six E Montgomery Crossroads Savannah | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3350 Bell Shoals Road Brandon | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 310      
Initial Costs to Company, Buildings and Improvements 1,971      
Gross Amount at Which Carried at Close of Period, Land 310      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,971      
Total 2,281      
Accumulated Depreciation $ 389      
Date of Construction 1998      
Date Acquired 2011      
Industrial Properties | 3350 Bell Shoals Road Brandon | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3350 Bell Shoals Road Brandon | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | Two Zero Six Johnny Mercer Boulevard Savannah | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 148      
Initial Costs to Company, Buildings and Improvements 590      
Gross Amount at Which Carried at Close of Period, Land 148      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 590      
Total 738      
Accumulated Depreciation $ 162      
Date of Construction 1981      
Date Acquired 2009      
Industrial Properties | Two Zero Six Johnny Mercer Boulevard Savannah | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | Two Zero Six Johnny Mercer Boulevard Savannah | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 5316 West Plano Parkway Plano | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 965      
Initial Costs to Company, Buildings and Improvements 2,895      
Gross Amount at Which Carried at Close of Period, Land 965      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,895      
Total 3,860      
Accumulated Depreciation $ 560      
Date of Construction 2000      
Date Acquired 2011      
Industrial Properties | 5316 West Plano Parkway Plano | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 5316 West Plano Parkway Plano | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 5,820      
Initial Costs to Company, Land 2,022      
Initial Costs to Company, Buildings and Improvements 6,065      
Gross Amount at Which Carried at Close of Period, Land 2,022      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,065      
Total 8,087      
Accumulated Depreciation $ 1,380      
Date of Construction 2002      
Date Acquired 2010      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 837 FM 1960 West, Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1430 Lonnie Abbot Avenue Ada | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 293      
Initial Costs to Company, Buildings and Improvements 1,172      
Gross Amount at Which Carried at Close of Period, Land 293      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,172      
Total 1,465      
Accumulated Depreciation $ 226      
Date of Construction 2011      
Date Acquired 2011      
Industrial Properties | 1430 Lonnie Abbot Avenue Ada | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1430 Lonnie Abbot Avenue Ada | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 5165 West 72nd Avenue, Westminster | CO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 1,008      
Initial Costs to Company, Land 426      
Initial Costs to Company, Buildings and Improvements 1,277      
Gross Amount at Which Carried at Close of Period, Land 426      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,277      
Total 1,703      
Accumulated Depreciation $ 250      
Date of Construction 1999      
Date Acquired 2010      
Industrial Properties | 5165 West 72nd Avenue, Westminster | CO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 5165 West 72nd Avenue, Westminster | CO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2655 Ridgeway Avenue, Greece | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,391      
Initial Costs to Company, Buildings and Improvements 30,442      
Costs Capitalized Subsequent to Acquisition, Improvements 3,232      
Gross Amount at Which Carried at Close of Period, Land 1,391      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 33,674      
Total 35,065      
Accumulated Depreciation $ 6,499      
Date of Construction 2011      
Date Acquired 2010      
Industrial Properties | 2655 Ridgeway Avenue, Greece | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2655 Ridgeway Avenue, Greece | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Industrial Properties | 9072 US Highway 70 Durant | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 131      
Initial Costs to Company, Buildings and Improvements 741      
Gross Amount at Which Carried at Close of Period, Land 131      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 741      
Total 872      
Accumulated Depreciation $ 145      
Date of Construction 2004      
Date Acquired 2011      
Industrial Properties | 9072 US Highway 70 Durant | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 9072 US Highway 70 Durant | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3069 Grand Pavilion Drive, Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 580      
Initial Costs to Company, Buildings and Improvements 3,304      
Gross Amount at Which Carried at Close of Period, Land 580      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,304      
Total 3,884      
Accumulated Depreciation $ 668      
Date of Construction 2002      
Date Acquired 2011      
Industrial Properties | 3069 Grand Pavilion Drive, Tampa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3069 Grand Pavilion Drive, Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1144 S.W. 104th St., Oklahoma City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 427      
Initial Costs to Company, Buildings and Improvements 1,282      
Gross Amount at Which Carried at Close of Period, Land 427      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,282      
Total 1,709      
Accumulated Depreciation $ 232      
Date of Construction 2001      
Date Acquired 2011      
Industrial Properties | 1144 S.W. 104th St., Oklahoma City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1144 S.W. 104th St., Oklahoma City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1011 East Taft Avenue, Sapulpa | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 510      
Initial Costs to Company, Buildings and Improvements 1,271      
Gross Amount at Which Carried at Close of Period, Land 510      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,271      
Total 1,781      
Accumulated Depreciation $ 208      
Date of Construction 2011      
Date Acquired 2012      
Industrial Properties | 1011 East Taft Avenue, Sapulpa | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1011 East Taft Avenue, Sapulpa | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 611 S. George Nigh Expressway McAlester | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 413      
Initial Costs to Company, Buildings and Improvements 1,669      
Gross Amount at Which Carried at Close of Period, Land 413      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,669      
Total 2,082      
Accumulated Depreciation $ 252      
Date of Construction 2012      
Date Acquired 2012      
Industrial Properties | 611 S. George Nigh Expressway McAlester | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 611 S. George Nigh Expressway McAlester | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 6250 Rufe Snow Drive, Ft Worth | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 350      
Initial Costs to Company, Buildings and Improvements 1,691      
Gross Amount at Which Carried at Close of Period, Land 350      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,691      
Total 2,041      
Accumulated Depreciation $ 265      
Date of Construction 2007      
Date Acquired 2012      
Industrial Properties | 6250 Rufe Snow Drive, Ft Worth | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 6250 Rufe Snow Drive, Ft Worth | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1333 E. Main Street Weatherford | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 357      
Initial Costs to Company, Buildings and Improvements 1,419      
Gross Amount at Which Carried at Close of Period, Land 357      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,419      
Total 1,776      
Accumulated Depreciation $ 223      
Date of Construction 2012      
Date Acquired 2012      
Industrial Properties | 1333 E. Main Street Weatherford | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1333 E. Main Street Weatherford | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1411 S. Rangeline Rd., Joplin | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 341      
Initial Costs to Company, Buildings and Improvements 1,370      
Gross Amount at Which Carried at Close of Period, Land 341      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,370      
Total 1,711      
Accumulated Depreciation $ 206      
Date of Construction 2012      
Date Acquired 2012      
Industrial Properties | 1411 S. Rangeline Rd., Joplin | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1411 S. Rangeline Rd., Joplin | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2203 W. University Drive Denton | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 785      
Initial Costs to Company, Buildings and Improvements 1,680      
Gross Amount at Which Carried at Close of Period, Land 785      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,680      
Total 2,465      
Accumulated Depreciation $ 217      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 2203 W. University Drive Denton | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2203 W. University Drive Denton | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2111 NW Cashe Road, Lawton | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 357      
Initial Costs to Company, Buildings and Improvements 1,422      
Gross Amount at Which Carried at Close of Period, Land 357      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,422      
Total 1,779      
Accumulated Depreciation $ 216      
Date of Construction 2012      
Date Acquired 2012      
Industrial Properties | 2111 NW Cashe Road, Lawton | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2111 NW Cashe Road, Lawton | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2197 12th Avenue NW, Ardmore | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 575      
Initial Costs to Company, Buildings and Improvements 1,400      
Gross Amount at Which Carried at Close of Period, Land 575      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,400      
Total 1,975      
Accumulated Depreciation $ 185      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 2197 12th Avenue NW, Ardmore | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2197 12th Avenue NW, Ardmore | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1443 N Rock Road Wichita | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 295      
Initial Costs to Company, Buildings and Improvements 1,606      
Gross Amount at Which Carried at Close of Period, Land 295      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,606      
Total 1,901      
Accumulated Depreciation $ 205      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 1443 N Rock Road Wichita | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1443 N Rock Road Wichita | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1224 SE Washinton Road, Bartlesville | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 505      
Initial Costs to Company, Buildings and Improvements 1,629      
Gross Amount at Which Carried at Close of Period, Land 505      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,629      
Total 2,134      
Accumulated Depreciation $ 213      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 1224 SE Washinton Road, Bartlesville | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1224 SE Washinton Road, Bartlesville | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4937 Clark Road Sarasota | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,290      
Initial Costs to Company, Buildings and Improvements 4,899      
Gross Amount at Which Carried at Close of Period, Land 1,290      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,899      
Total 6,189      
Accumulated Depreciation $ 703      
Date of Construction 2002      
Date Acquired 2013      
Industrial Properties | 4937 Clark Road Sarasota | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4937 Clark Road Sarasota | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1700 & 1710 Wuesthoff Drive, Viera | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,320      
Initial Costs to Company, Buildings and Improvements 13,281      
Gross Amount at Which Carried at Close of Period, Land 3,320      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,281      
Total 16,601      
Accumulated Depreciation $ 2,083      
Date of Construction 1993      
Date Acquired 2012      
Industrial Properties | 1700 & 1710 Wuesthoff Drive, Viera | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1700 & 1710 Wuesthoff Drive, Viera | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4947 Clark Road Sarasota | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 934      
Initial Costs to Company, Buildings and Improvements 5,013      
Gross Amount at Which Carried at Close of Period, Land 934      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,013      
Total 5,947      
Accumulated Depreciation $ 687      
Date of Construction 2002      
Date Acquired 2013      
Industrial Properties | 4947 Clark Road Sarasota | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4947 Clark Road Sarasota | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 865 S. Indiana Avenue Englewood | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 207      
Initial Costs to Company, Buildings and Improvements 679      
Gross Amount at Which Carried at Close of Period, Land 207      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 679      
Total 886      
Accumulated Depreciation $ 96      
Date of Construction 1985      
Date Acquired 2013      
Industrial Properties | 865 S. Indiana Avenue Englewood | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 865 S. Indiana Avenue Englewood | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1350 South Sunny Slope Road Brookfield | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 338      
Initial Costs to Company, Buildings and Improvements 4,603      
Gross Amount at Which Carried at Close of Period, Land 338      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,603      
Total 4,941      
Accumulated Depreciation $ 631      
Date of Construction 2005      
Date Acquired 2013      
Industrial Properties | 1350 South Sunny Slope Road Brookfield | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1350 South Sunny Slope Road Brookfield | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2315 East Moreland Blvd, Waukesha | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 302      
Initial Costs to Company, Buildings and Improvements 11,218      
Gross Amount at Which Carried at Close of Period, Land 302      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 11,218      
Total 11,520      
Accumulated Depreciation $ 1,418      
Date of Construction 2005      
Date Acquired 2013      
Industrial Properties | 2315 East Moreland Blvd, Waukesha | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2315 East Moreland Blvd, Waukesha | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 21700 Intertech Drive Brookfield | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 331      
Initial Costs to Company, Buildings and Improvements 7,542      
Gross Amount at Which Carried at Close of Period, Land 331      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,542      
Total 7,873      
Accumulated Depreciation $ 982      
Date of Construction 2008      
Date Acquired 2013      
Industrial Properties | 21700 Intertech Drive Brookfield | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 21700 Intertech Drive Brookfield | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 4455 South 108th Street, Greenfield | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 212      
Initial Costs to Company, Buildings and Improvements 7,163      
Gross Amount at Which Carried at Close of Period, Land 212      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,163      
Total 7,375      
Accumulated Depreciation $ 902      
Date of Construction 2011      
Date Acquired 2013      
Industrial Properties | 4455 South 108th Street, Greenfield | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 4455 South 108th Street, Greenfield | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2958 Dorchester Drive Montgomery | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 94      
Initial Costs to Company, Buildings and Improvements 1,303      
Gross Amount at Which Carried at Close of Period, Land 94      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,303      
Total 1,397      
Accumulated Depreciation $ 172      
Date of Construction 2013      
Date Acquired 2013      
Industrial Properties | 2958 Dorchester Drive Montgomery | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2958 Dorchester Drive Montgomery | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 913 N. 25th Street, Richmond | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 348      
Initial Costs to Company, Buildings and Improvements 2,986      
Gross Amount at Which Carried at Close of Period, Land 348      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,986      
Total 3,334      
Accumulated Depreciation $ 338      
Date of Construction 2011      
Date Acquired 2013      
Industrial Properties | 913 N. 25th Street, Richmond | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 913 N. 25th Street, Richmond | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1900 Aldersgate Road Little Rock | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,866      
Initial Costs to Company, Buildings and Improvements 5,294      
Gross Amount at Which Carried at Close of Period, Land 1,866      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,294      
Total 7,160      
Accumulated Depreciation $ 566      
Date of Construction 2012      
Date Acquired 2014      
Industrial Properties | 1900 Aldersgate Road Little Rock | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1900 Aldersgate Road Little Rock | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 301 N Sidney Avenue, Russellvillee | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,232      
Initial Costs to Company, Buildings and Improvements 4,752      
Gross Amount at Which Carried at Close of Period, Land 1,232      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,752      
Total 5,984      
Accumulated Depreciation $ 494      
Date of Construction 2010      
Date Acquired 2014      
Industrial Properties | 301 N Sidney Avenue, Russellvillee | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 301 N Sidney Avenue, Russellvillee | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2740 College Avenue Conway | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,522      
Initial Costs to Company, Buildings and Improvements 3,579      
Costs Capitalized Subsequent to Acquisition, Improvements 5,624      
Gross Amount at Which Carried at Close of Period, Land 1,522      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,203      
Total 10,725      
Accumulated Depreciation $ 569      
Date of Construction 2007      
Date Acquired 2014      
Industrial Properties | 2740 College Avenue Conway | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2740 College Avenue Conway | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3020 Mallory Lane, Franklin | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 252      
Initial Costs to Company, Buildings and Improvements 2,933      
Gross Amount at Which Carried at Close of Period, Land 252      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,933      
Total 3,185      
Accumulated Depreciation $ 233      
Date of Construction 2005      
Date Acquired 2015      
Industrial Properties | 3020 Mallory Lane, Franklin | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 3020 Mallory Lane, Franklin | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1050 Bonaventure Drive, Elk Grove Village | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 766      
Initial Costs to Company, Buildings and Improvements 3,728      
Gross Amount at Which Carried at Close of Period, Land 766      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,728      
Total 4,494      
Accumulated Depreciation $ 335      
Date of Construction 1985      
Date Acquired 2015      
Industrial Properties | 1050 Bonaventure Drive, Elk Grove Village | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1050 Bonaventure Drive, Elk Grove Village | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 364 S Independence Blvd, Virginia Beach | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 827      
Initial Costs to Company, Buildings and Improvements 3,310      
Gross Amount at Which Carried at Close of Period, Land 827      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,310      
Total 4,137      
Accumulated Depreciation $ 162      
Date of Construction 2008      
Date Acquired 2016      
Industrial Properties | 364 S Independence Blvd, Virginia Beach | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 364 S Independence Blvd, Virginia Beach | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 3000 Busch Lake Blvd., Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 42      
Initial Costs to Company, Buildings and Improvements 6,945      
Gross Amount at Which Carried at Close of Period, Land 42      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,945      
Total 6,987      
Accumulated Depreciation $ 200      
Date of Construction 1999      
Date Acquired 2016      
Industrial Properties | 3000 Busch Lake Blvd., Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2910 Busch Lake Blvd., Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 8      
Initial Costs to Company, Buildings and Improvements 732      
Gross Amount at Which Carried at Close of Period, Land 8      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 732      
Total 740      
Accumulated Depreciation $ 21      
Date of Construction 1999      
Date Acquired 2016      
Industrial Properties | 2910 Busch Lake Blvd., Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2950 Busch Lake Blvd., Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 33      
Initial Costs to Company, Buildings and Improvements 2,094      
Gross Amount at Which Carried at Close of Period, Land 33      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,094      
Total 2,127      
Accumulated Depreciation $ 60      
Date of Construction 2013      
Date Acquired 2016      
Industrial Properties | 2950 Busch Lake Blvd., Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 19311 State Highway 249, Houston | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 405      
Initial Costs to Company, Buildings and Improvements 2,586      
Gross Amount at Which Carried at Close of Period, Land 405      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,586      
Total 2,991      
Accumulated Depreciation $ 80      
Date of Construction 2002      
Date Acquired 2016      
Industrial Properties | 19311 State Highway 249, Houston | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 19311 State Highway 249, Houston | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 150      
Initial Costs to Company, Buildings and Improvements 3,622      
Gross Amount at Which Carried at Close of Period, Land 150      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,622      
Total 3,772      
Accumulated Depreciation $ 64      
Date of Construction 2010      
Date Acquired 2017      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 503 E. Parker Road, Morganton | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 164      
Initial Costs to Company, Buildings and Improvements 3,010      
Gross Amount at Which Carried at Close of Period, Land 164      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,010      
Total 3,174      
Accumulated Depreciation $ 54      
Date of Construction 2000      
Date Acquired 2017      
Industrial Properties | 503 E. Parker Road, Morganton | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 503 E. Parker Road, Morganton | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 841 Malcolm Boulevard, Rutherford College | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 130      
Initial Costs to Company, Buildings and Improvements 2,692      
Gross Amount at Which Carried at Close of Period, Land 130      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,692      
Total 2,822      
Accumulated Depreciation $ 48      
Date of Construction 2007      
Date Acquired 2017      
Industrial Properties | 841 Malcolm Boulevard, Rutherford College | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 841 Malcolm Boulevard, Rutherford College | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2165 Medical Park Drive, Hickory | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 473      
Initial Costs to Company, Buildings and Improvements 4,991      
Gross Amount at Which Carried at Close of Period, Land 473      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,991      
Total 5,464      
Accumulated Depreciation $ 94      
Date of Construction 2000      
Date Acquired 2017      
Industrial Properties | 2165 Medical Park Drive, Hickory | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2165 Medical Park Drive, Hickory | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 829 W 25th Street, Newton | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 195      
Initial Costs to Company, Buildings and Improvements 1,085      
Gross Amount at Which Carried at Close of Period, Land 195      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,085      
Total 1,280      
Accumulated Depreciation $ 22      
Date of Construction 1994      
Date Acquired 2017      
Industrial Properties | 829 W 25th Street, Newton | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 829 W 25th Street, Newton | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1803 Forest Hills Road W., Wilson | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 101      
Initial Costs to Company, Buildings and Improvements 458      
Gross Amount at Which Carried at Close of Period, Land 101      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 458      
Total 559      
Accumulated Depreciation $ 9      
Date of Construction 1998      
Date Acquired 2017      
Industrial Properties | 1803 Forest Hills Road W., Wilson | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1803 Forest Hills Road W., Wilson | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 547      
Initial Costs to Company, Buildings and Improvements 6,214      
Costs Capitalized Subsequent to Acquisition, Improvements 49      
Gross Amount at Which Carried at Close of Period, Land 547      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 6,263      
Total 6,810      
Accumulated Depreciation $ 113      
Date of Construction 1993      
Date Acquired 2017      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 232 Sharon Avenue NW, Lenoir | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 10103 Metcalf Avenue, Overland Park | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 456      
Initial Costs to Company, Buildings and Improvements 3,789      
Gross Amount at Which Carried at Close of Period, Land 456      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,789      
Total 4,245      
Accumulated Depreciation $ 40      
Date of Construction 2006      
Date Acquired 2017      
Industrial Properties | 10103 Metcalf Avenue, Overland Park | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 10103 Metcalf Avenue, Overland Park | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 10183 Metcalf Avenue, Overland Park | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 205      
Initial Costs to Company, Buildings and Improvements 8,045      
Gross Amount at Which Carried at Close of Period, Land 205      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,045      
Total 8,250      
Accumulated Depreciation $ 78      
Date of Construction 2016      
Date Acquired 2017      
Industrial Properties | 10183 Metcalf Avenue, Overland Park | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 10183 Metcalf Avenue, Overland Park | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 10203 Metcalf Avenue, Overland Park | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 571      
Initial Costs to Company, Buildings and Improvements 3,715      
Gross Amount at Which Carried at Close of Period, Land 571      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,715      
Total 4,286      
Accumulated Depreciation $ 47      
Date of Construction 1965      
Date Acquired 2017      
Industrial Properties | 10203 Metcalf Avenue, Overland Park | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 10203 Metcalf Avenue, Overland Park | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 425 Centre View Boulevard, Crestview Hills | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 5,183      
Initial Costs to Company, Land 192      
Initial Costs to Company, Buildings and Improvements 8,342      
Gross Amount at Which Carried at Close of Period, Land 192      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,342      
Total 8,534      
Accumulated Depreciation $ 30      
Date of Construction 2005      
Date Acquired 2017      
Industrial Properties | 425 Centre View Boulevard, Crestview Hills | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 425 Centre View Boulevard, Crestview Hills | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2425 S. Rouse Avenue, Pittsburgh | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 103      
Initial Costs to Company, Buildings and Improvements 2,264      
Gross Amount at Which Carried at Close of Period, Land 103      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,264      
Total 2,367      
Accumulated Depreciation $ 8      
Date of Construction 2016      
Date Acquired 2017      
Industrial Properties | 2425 S. Rouse Avenue, Pittsburgh | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2425 S. Rouse Avenue, Pittsburgh | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 2321 W. Morehead Street, Charlotte | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 825      
Initial Costs to Company, Buildings and Improvements 4,968      
Gross Amount at Which Carried at Close of Period, Land 825      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,968      
Total 5,793      
Accumulated Depreciation $ 17      
Date of Construction 1989      
Date Acquired 2017      
Industrial Properties | 2321 W. Morehead Street, Charlotte | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 2321 W. Morehead Street, Charlotte | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 10921 East St. South, Tulsa | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 734      
Initial Costs to Company, Buildings and Improvements 3,143      
Gross Amount at Which Carried at Close of Period, Land 734      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,143      
Total 3,877      
Accumulated Depreciation $ 11      
Date of Construction 2016      
Date Acquired 2017      
Industrial Properties | 10921 East St. South, Tulsa | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 10921 East St. South, Tulsa | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 1306 Lincoln Street, Rhinelander | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 55      
Initial Costs to Company, Buildings and Improvements 1,689      
Gross Amount at Which Carried at Close of Period, Land 55      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,689      
Total 1,744      
Accumulated Depreciation $ 6      
Date of Construction 2013      
Date Acquired 2017      
Industrial Properties | 1306 Lincoln Street, Rhinelander | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 1306 Lincoln Street, Rhinelander | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Industrial Properties | 6450 Bannington Road, Charlotte | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 534      
Initial Costs to Company, Buildings and Improvements 1,101      
Gross Amount at Which Carried at Close of Period, Land 534      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,101      
Total 1,635      
Accumulated Depreciation $ 6      
Date of Construction 1999      
Date Acquired 2017      
Industrial Properties | 6450 Bannington Road, Charlotte | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Industrial Properties | 6450 Bannington Road, Charlotte | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 265 Thruway Park Drive, Rochester | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 5,670      
Initial Costs to Company, Land 589      
Initial Costs to Company, Buildings and Improvements 9,872      
Gross Amount at Which Carried at Close of Period, Land 589      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,872      
Total 10,461      
Accumulated Depreciation $ 2,131      
Date of Construction 2001      
Date Acquired 2010      
Other | 265 Thruway Park Drive, Rochester | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 265 Thruway Park Drive, Rochester | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 5815 Middlebrook Pike, Knoxville | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 744      
Initial Costs to Company, Buildings and Improvements 2,246      
Gross Amount at Which Carried at Close of Period, Land 744      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,246      
Total 2,990      
Accumulated Depreciation $ 501      
Date of Construction 1975      
Date Acquired 2011      
Other | 5815 Middlebrook Pike, Knoxville | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 5815 Middlebrook Pike, Knoxville | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 6800 Spyglass Court, Viera | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 809      
Initial Costs to Company, Buildings and Improvements 3,235      
Gross Amount at Which Carried at Close of Period, Land 809      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,235      
Total 4,044      
Accumulated Depreciation $ 567      
Date of Construction 1998      
Date Acquired 2012      
Other | 6800 Spyglass Court, Viera | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 6800 Spyglass Court, Viera | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 4500 S. Hamilton Road, Groveport | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 710      
Initial Costs to Company, Buildings and Improvements 5,087      
Gross Amount at Which Carried at Close of Period, Land 710      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,087      
Total 5,797      
Accumulated Depreciation $ 630      
Date of Construction 1979      
Date Acquired 2014      
Other | 4500 S. Hamilton Road, Groveport | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 4500 S. Hamilton Road, Groveport | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 3217 South Decker Lake Drive, West Valley City | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,336      
Initial Costs to Company, Buildings and Improvements 5,822      
Costs Capitalized Subsequent to Acquisition, Improvements 10,000      
Gross Amount at Which Carried at Close of Period, Land 1,336      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 15,822      
Total 17,158      
Accumulated Depreciation $ 1,739      
Date of Construction 1998      
Date Acquired 2014      
Other | 3217 South Decker Lake Drive, West Valley City | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 3217 South Decker Lake Drive, West Valley City | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 2560 North Shadeland Avenue, Indianpolis | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,086      
Initial Costs to Company, Buildings and Improvements 18,552      
Costs Capitalized Subsequent to Acquisition, Improvements 1,050      
Gross Amount at Which Carried at Close of Period, Land 1,086      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,602      
Total 20,688      
Accumulated Depreciation $ 68      
Date of Construction 1995      
Date Acquired 2017      
Other | 2560 North Shadeland Avenue, Indianpolis | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Other | 2560 North Shadeland Avenue, Indianpolis | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 408 S. 8th Street, San Jose | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 914      
Initial Costs to Company, Buildings and Improvements 2,704      
Gross Amount at Which Carried at Close of Period, Land 914      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,704      
Total 3,618      
Accumulated Depreciation $ 138      
Date of Construction 1920      
Date Acquired 2016      
Other | 408 S. 8th Street, San Jose | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 27 years 6 months      
Other | 408 S. 8th Street, San Jose | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 1411 Elm Avenue, Norman | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 68      
Initial Costs to Company, Buildings and Improvements 5,358      
Gross Amount at Which Carried at Close of Period, Land 68      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,358      
Total 5,426      
Accumulated Depreciation $ 273      
Date of Construction 1965      
Date Acquired 2016      
Other | 1411 Elm Avenue, Norman | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 27 years 6 months      
Other | 1411 Elm Avenue, Norman | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 2310 NW Harrison, Corvallis | OR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 122      
Initial Costs to Company, Buildings and Improvements 1,114      
Gross Amount at Which Carried at Close of Period, Land 122      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,114      
Total 1,236      
Accumulated Depreciation $ 58      
Date of Construction 1939      
Date Acquired 2016      
Other | 2310 NW Harrison, Corvallis | OR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 27 years 6 months      
Other | 2310 NW Harrison, Corvallis | OR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 17 Maple Street, Oneonta | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 23      
Initial Costs to Company, Buildings and Improvements 838      
Gross Amount at Which Carried at Close of Period, Land 23      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 838      
Total 861      
Accumulated Depreciation $ 4      
Date of Construction 1893      
Date Acquired 2017      
Other | 17 Maple Street, Oneonta | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 28 years      
Other | 17 Maple Street, Oneonta | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 368 Rose Street, Lexington | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 28      
Initial Costs to Company, Buildings and Improvements 2,605      
Gross Amount at Which Carried at Close of Period, Land 28      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,605      
Total 2,633      
Accumulated Depreciation $ 12      
Date of Construction 1985      
Date Acquired 2017      
Other | 368 Rose Street, Lexington | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 28 years      
Other | 368 Rose Street, Lexington | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 647 West Pensacola Street, Tallahassee | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 6,685      
Initial Costs to Company, Land 74      
Initial Costs to Company, Buildings and Improvements 7,476      
Gross Amount at Which Carried at Close of Period, Land 74      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,476      
Total 7,550      
Accumulated Depreciation $ 34      
Date of Construction 2015      
Date Acquired 2017      
Other | 647 West Pensacola Street, Tallahassee | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 28 years      
Other | 647 West Pensacola Street, Tallahassee | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Other | 805 Johnston Street, Greenville | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 122      
Initial Costs to Company, Buildings and Improvements 1,700      
Gross Amount at Which Carried at Close of Period, Land 122      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,700      
Total 1,822      
Accumulated Depreciation $ 8      
Date of Construction 1923      
Date Acquired 2017      
Other | 805 Johnston Street, Greenville | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 28 years      
Other | 805 Johnston Street, Greenville | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 8060 Spyglass Hill Road, Viera | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 700      
Initial Costs to Company, Buildings and Improvements 2,800      
Gross Amount at Which Carried at Close of Period, Land 700      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,800      
Total 3,500      
Accumulated Depreciation $ 532      
Date of Construction 1997      
Date Acquired 2012      
Office Properties | 8060 Spyglass Hill Road, Viera | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 8060 Spyglass Hill Road, Viera | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 1440 13th Avenue, Union Grove | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 85      
Initial Costs to Company, Buildings and Improvements 340      
Gross Amount at Which Carried at Close of Period, Land 85      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 340      
Total 425      
Accumulated Depreciation $ 49      
Date of Construction 1993      
Date Acquired 2012      
Office Properties | 1440 13th Avenue, Union Grove | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 1440 13th Avenue, Union Grove | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 7777 Bluemound Road, Milwaukee | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 668      
Initial Costs to Company, Buildings and Improvements 5,650      
Gross Amount at Which Carried at Close of Period, Land 668      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,650      
Total 6,318      
Accumulated Depreciation $ 490      
Date of Construction 1989      
Date Acquired 2014      
Office Properties | 7777 Bluemound Road, Milwaukee | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 7777 Bluemound Road, Milwaukee | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 950 I-30 East, Mt. Pleasant | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,214      
Initial Costs to Company, Buildings and Improvements 3,717      
Gross Amount at Which Carried at Close of Period, Land 2,214      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,717      
Total 5,931      
Accumulated Depreciation $ 434      
Date of Construction 2008      
Date Acquired 2014      
Office Properties | 950 I-30 East, Mt. Pleasant | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 950 I-30 East, Mt. Pleasant | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 355 Maple Avenue, Harleysville | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,513      
Initial Costs to Company, Buildings and Improvements 24,767      
Gross Amount at Which Carried at Close of Period, Land 3,513      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 24,767      
Total 28,280      
Accumulated Depreciation $ 1,341      
Date of Construction 1950      
Date Acquired 2016      
Office Properties | 355 Maple Avenue, Harleysville | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 355 Maple Avenue, Harleysville | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 1000 Nationwide Drive, Harrisburg | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 958      
Initial Costs to Company, Buildings and Improvements 19,060      
Gross Amount at Which Carried at Close of Period, Land 958      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,060      
Total 20,018      
Accumulated Depreciation $ 891      
Date of Construction 1976      
Date Acquired 2016      
Office Properties | 1000 Nationwide Drive, Harrisburg | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 1000 Nationwide Drive, Harrisburg | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 1501 Mittel Blvd, Wood Dale | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,806      
Initial Costs to Company, Buildings and Improvements 8,726      
Gross Amount at Which Carried at Close of Period, Land 2,806      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,726      
Total 11,532      
Accumulated Depreciation $ 381      
Date of Construction 1986      
Date Acquired 2016      
Office Properties | 1501 Mittel Blvd, Wood Dale | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 1501 Mittel Blvd, Wood Dale | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 1804 McCarthy Blvd., Milpitas | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,478      
Initial Costs to Company, Buildings and Improvements 8,164      
Gross Amount at Which Carried at Close of Period, Land 1,478      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,164      
Total 9,642      
Accumulated Depreciation $ 265      
Date of Construction 1982      
Date Acquired 2016      
Office Properties | 1804 McCarthy Blvd., Milpitas | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 1804 McCarthy Blvd., Milpitas | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 5900 E. Ben White Blvd., Austin | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 300      
Initial Costs to Company, Buildings and Improvements 29,681      
Costs Capitalized Subsequent to Acquisition, Improvements 8,649      
Gross Amount at Which Carried at Close of Period, Land 300      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 38,330      
Total 38,630      
Accumulated Depreciation $ 982      
Date of Construction 1984      
Date Acquired 2016      
Office Properties | 5900 E. Ben White Blvd., Austin | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 5900 E. Ben White Blvd., Austin | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 3011 S. Babcock St., Melbourne | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,701      
Initial Costs to Company, Buildings and Improvements 12,141      
Gross Amount at Which Carried at Close of Period, Land 1,701      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 12,141      
Total 13,842      
Accumulated Depreciation $ 383      
Date of Construction 2012      
Date Acquired 2016      
Office Properties | 3011 S. Babcock St., Melbourne | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 3011 S. Babcock St., Melbourne | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 99 Garnsey Road, Pittsford | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 40      
Initial Costs to Company, Buildings and Improvements 29,530      
Costs Capitalized Subsequent to Acquisition, Improvements 1,000      
Gross Amount at Which Carried at Close of Period, Land 40      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 30,530      
Total 30,570      
Accumulated Depreciation $ 334      
Date of Construction 1975      
Date Acquired 2017      
Office Properties | 99 Garnsey Road, Pittsford | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 99 Garnsey Road, Pittsford | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 2160 S. Power Road, Mesa | AZ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 785      
Initial Costs to Company, Buildings and Improvements 5,034      
Gross Amount at Which Carried at Close of Period, Land 785      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,034      
Total 5,819      
Accumulated Depreciation $ 18      
Date of Construction 1998      
Date Acquired 2017      
Office Properties | 2160 S. Power Road, Mesa | AZ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 2160 S. Power Road, Mesa | AZ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 4400 Cutler Avenue, Albuquerque | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 987      
Initial Costs to Company, Buildings and Improvements 11,357      
Gross Amount at Which Carried at Close of Period, Land 987      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 11,357      
Total 12,344      
Accumulated Depreciation $ 38      
Date of Construction 1996      
Date Acquired 2017      
Office Properties | 4400 Cutler Avenue, Albuquerque | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 4400 Cutler Avenue, Albuquerque | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 9487 Regency Square Boulevard, Jacksonville | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,251      
Initial Costs to Company, Buildings and Improvements 19,784      
Gross Amount at Which Carried at Close of Period, Land 1,251      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,784      
Total 21,035      
Accumulated Depreciation $ 66      
Date of Construction 1984      
Date Acquired 2017      
Office Properties | 9487 Regency Square Boulevard, Jacksonville | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 9487 Regency Square Boulevard, Jacksonville | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Office Properties | 500 Kirts Boulevard, Troy | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,665      
Initial Costs to Company, Buildings and Improvements 19,798      
Gross Amount at Which Carried at Close of Period, Land 1,665      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 19,798      
Total 21,463      
Accumulated Depreciation $ 69      
Date of Construction 1984      
Date Acquired 2017      
Office Properties | 500 Kirts Boulevard, Troy | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Office Properties | 500 Kirts Boulevard, Troy | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Buildings and Improvements $ 44      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 44      
Total 44      
Retail Properties | 2013 Center Point Parkway, Birmingham | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land 300      
Initial Costs to Company, Buildings and Improvements 1,122      
Gross Amount at Which Carried at Close of Period, Land 300      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,122      
Total 1,422      
Accumulated Depreciation $ 367      
Date of Construction 2000      
Date Acquired 2006      
Retail Properties | 2013 Center Point Parkway, Birmingham | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2013 Center Point Parkway, Birmingham | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3104 Peach Orchard Rd, Augusta | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 270      
Initial Costs to Company, Buildings and Improvements 1,108      
Gross Amount at Which Carried at Close of Period, Land 270      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,109      
Total 1,378      
Accumulated Depreciation $ 342      
Date of Construction 1992      
Date Acquired 2007      
Retail Properties | 3104 Peach Orchard Rd, Augusta | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3104 Peach Orchard Rd, Augusta | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2011 Airport Boulevard, Pensacola | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 207      
Initial Costs to Company, Buildings and Improvements 1,595      
Gross Amount at Which Carried at Close of Period, Land 207      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,595      
Total 1,802      
Accumulated Depreciation $ 488      
Date of Construction 1998      
Date Acquired 2007      
Retail Properties | 2011 Airport Boulevard, Pensacola | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2011 Airport Boulevard, Pensacola | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3649 Phillips Highway, Jacksonville | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 223      
Initial Costs to Company, Buildings and Improvements 1,262      
Gross Amount at Which Carried at Close of Period, Land 223      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,262      
Total 1,485      
Accumulated Depreciation $ 452      
Date of Construction 1987      
Date Acquired 2007      
Retail Properties | 3649 Phillips Highway, Jacksonville | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3649 Phillips Highway, Jacksonville | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9178 Chamberlayne Road, Mechanicsville | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 288      
Initial Costs to Company, Buildings and Improvements 1,633      
Gross Amount at Which Carried at Close of Period, Land 288      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,633      
Total 1,921      
Accumulated Depreciation $ 476      
Date of Construction 1996      
Date Acquired 2007      
Retail Properties | 9178 Chamberlayne Road, Mechanicsville | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9178 Chamberlayne Road, Mechanicsville | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 100 East Cloverleaf Drive, Emporia | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 325      
Initial Costs to Company, Buildings and Improvements 1,841      
Gross Amount at Which Carried at Close of Period, Land 325      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,841      
Total 2,166      
Accumulated Depreciation $ 585      
Date of Construction 1993      
Date Acquired 2007      
Retail Properties | 100 East Cloverleaf Drive, Emporia | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 100 East Cloverleaf Drive, Emporia | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 20 Arthur Anderson Parkway, Sarasota | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 553      
Initial Costs to Company, Buildings and Improvements 3,131      
Gross Amount at Which Carried at Close of Period, Land 553      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,131      
Total 3,684      
Accumulated Depreciation $ 865      
Date of Construction 1994      
Date Acquired 2008      
Retail Properties | 20 Arthur Anderson Parkway, Sarasota | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 20 Arthur Anderson Parkway, Sarasota | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5055 J. Turner Butler Blvd., Jacksonville | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 1,500      
Initial Costs to Company, Land 673      
Initial Costs to Company, Buildings and Improvements 2,691      
Gross Amount at Which Carried at Close of Period, Land 673      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,691      
Total 3,364      
Accumulated Depreciation $ 689      
Date of Construction 1998      
Date Acquired 2009      
Retail Properties | 5055 J. Turner Butler Blvd., Jacksonville | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5055 J. Turner Butler Blvd., Jacksonville | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1530 South Mason Road, Katy | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 500      
Initial Costs to Company, Buildings and Improvements 648      
Gross Amount at Which Carried at Close of Period, Land 500      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 648      
Total 1,148      
Accumulated Depreciation $ 179      
Date of Construction 1997      
Date Acquired 2009      
Retail Properties | 1530 South Mason Road, Katy | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1530 South Mason Road, Katy | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9827 West Main Street, La Porte | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 250      
Initial Costs to Company, Buildings and Improvements 1,151      
Gross Amount at Which Carried at Close of Period, Land 250      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,151      
Total 1,401      
Accumulated Depreciation $ 305      
Date of Construction 1996      
Date Acquired 2009      
Retail Properties | 9827 West Main Street, La Porte | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9827 West Main Street, La Porte | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6601 Dalrock Road, Rowlett | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 350      
Initial Costs to Company, Buildings and Improvements 776      
Gross Amount at Which Carried at Close of Period, Land 350      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 776      
Total 1,126      
Accumulated Depreciation $ 220      
Date of Construction 1995      
Date Acquired 2009      
Retail Properties | 6601 Dalrock Road, Rowlett | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6601 Dalrock Road, Rowlett | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1000 NW 24th Avenue, Norman | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 280      
Initial Costs to Company, Buildings and Improvements 1,049      
Gross Amount at Which Carried at Close of Period, Land 280      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,049      
Total 1,329      
Accumulated Depreciation $ 256      
Date of Construction 1991      
Date Acquired 2009      
Retail Properties | 1000 NW 24th Avenue, Norman | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1000 NW 24th Avenue, Norman | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5901 West Reno Avenue, Oklahoma City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 540      
Initial Costs to Company, Buildings and Improvements 517      
Gross Amount at Which Carried at Close of Period, Land 540      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 517      
Total 1,057      
Accumulated Depreciation $ 166      
Date of Construction 2001      
Date Acquired 2009      
Retail Properties | 5901 West Reno Avenue, Oklahoma City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5901 West Reno Avenue, Oklahoma City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 615 S. Main St., Ashland City | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 59      
Initial Costs to Company, Buildings and Improvements 973      
Gross Amount at Which Carried at Close of Period, Land 59      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 973      
Total 1,032      
Accumulated Depreciation $ 32      
Date of Construction 1992      
Date Acquired 2016      
Retail Properties | 615 S. Main St., Ashland City | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 615 S. Main St., Ashland City | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1628 Main St., Cadiz | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 77      
Initial Costs to Company, Buildings and Improvements 1,048      
Gross Amount at Which Carried at Close of Period, Land 77      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,048      
Total 1,125      
Accumulated Depreciation $ 36      
Date of Construction 1992      
Date Acquired 2016      
Retail Properties | 1628 Main St., Cadiz | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1628 Main St., Cadiz | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 729 Highway 100, Centerville | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 68      
Initial Costs to Company, Buildings and Improvements 965      
Gross Amount at Which Carried at Close of Period, Land 68      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 965      
Total 1,033      
Accumulated Depreciation $ 35      
Date of Construction 2006      
Date Acquired 2016      
Retail Properties | 729 Highway 100, Centerville | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 729 Highway 100, Centerville | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 106 Luyben Hills Road, Kingston Springs | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 92      
Initial Costs to Company, Buildings and Improvements 978      
Gross Amount at Which Carried at Close of Period, Land 92      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 978      
Total 1,070      
Accumulated Depreciation $ 36      
Date of Construction 1998      
Date Acquired 2016      
Retail Properties | 106 Luyben Hills Road, Kingston Springs | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 106 Luyben Hills Road, Kingston Springs | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3655 N. Mount Juliet Road, Mount Juliet | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 76      
Initial Costs to Company, Buildings and Improvements 995      
Gross Amount at Which Carried at Close of Period, Land 76      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 995      
Total 1,071      
Accumulated Depreciation $ 35      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 3655 N. Mount Juliet Road, Mount Juliet | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3655 N. Mount Juliet Road, Mount Juliet | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 417 Highway 76, White House | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 105      
Initial Costs to Company, Buildings and Improvements 927      
Gross Amount at Which Carried at Close of Period, Land 105      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 927      
Total 1,032      
Accumulated Depreciation $ 35      
Date of Construction 2003      
Date Acquired 2016      
Retail Properties | 417 Highway 76, White House | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 417 Highway 76, White House | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1890 Perkins Road, Stillwater | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 811      
Initial Costs to Company, Buildings and Improvements 1,622      
Gross Amount at Which Carried at Close of Period, Land 811      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,622      
Total 2,433      
Accumulated Depreciation $ 388      
Date of Construction 2008      
Date Acquired 2010      
Retail Properties | 1890 Perkins Road, Stillwater | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1890 Perkins Road, Stillwater | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 833 Highway 62 E, Mountain Home | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 338      
Initial Costs to Company, Buildings and Improvements 1,016      
Gross Amount at Which Carried at Close of Period, Land 338      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,016      
Total 1,354      
Accumulated Depreciation $ 236      
Date of Construction 1988      
Date Acquired 2010      
Retail Properties | 833 Highway 62 E, Mountain Home | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 833 Highway 62 E, Mountain Home | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1102 S Saint Louis Street, Batesville | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 214      
Initial Costs to Company, Buildings and Improvements 1,055      
Gross Amount at Which Carried at Close of Period, Land 214      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,055      
Total 1,269      
Accumulated Depreciation $ 256      
Date of Construction 1988      
Date Acquired 2010      
Retail Properties | 1102 S Saint Louis Street, Batesville | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1102 S Saint Louis Street, Batesville | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2525 W. Kings Highway, Paragould | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 187      
Initial Costs to Company, Buildings and Improvements 1,444      
Gross Amount at Which Carried at Close of Period, Land 187      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,444      
Total 1,631      
Accumulated Depreciation $ 306      
Date of Construction 1990      
Date Acquired 2010      
Retail Properties | 2525 W. Kings Highway, Paragould | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2525 W. Kings Highway, Paragould | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2055 N. Washington Street, Forrest City | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 84      
Initial Costs to Company, Buildings and Improvements 941      
Gross Amount at Which Carried at Close of Period, Land 84      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 941      
Total 1,025      
Accumulated Depreciation $ 229      
Date of Construction 1989      
Date Acquired 2010      
Retail Properties | 2055 N. Washington Street, Forrest City | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2055 N. Washington Street, Forrest City | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2730 Lake Road, Dyersburg | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 276      
Initial Costs to Company, Buildings and Improvements 1,250      
Gross Amount at Which Carried at Close of Period, Land 276      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,250      
Total 1,526      
Accumulated Depreciation $ 276      
Date of Construction 1989      
Date Acquired 2010      
Retail Properties | 2730 Lake Road, Dyersburg | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2730 Lake Road, Dyersburg | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 849 University Street, Martin | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 152      
Initial Costs to Company, Buildings and Improvements 858      
Gross Amount at Which Carried at Close of Period, Land 152      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 858      
Total 1,010      
Accumulated Depreciation $ 212      
Date of Construction 1999      
Date Acquired 2010      
Retail Properties | 849 University Street, Martin | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 849 University Street, Martin | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1400 Rutledge Lane, Union City | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 72      
Initial Costs to Company, Buildings and Improvements 806      
Gross Amount at Which Carried at Close of Period, Land 72      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 806      
Total 878      
Accumulated Depreciation $ 190      
Date of Construction 1988      
Date Acquired 2010      
Retail Properties | 1400 Rutledge Lane, Union City | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1400 Rutledge Lane, Union City | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2625 Alexandria Pike, Highland Heights | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 850      
Initial Costs to Company, Buildings and Improvements 1,984      
Gross Amount at Which Carried at Close of Period, Land 850      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,984      
Total 2,834      
Accumulated Depreciation $ 411      
Date of Construction 1985      
Date Acquired 2010      
Retail Properties | 2625 Alexandria Pike, Highland Heights | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2625 Alexandria Pike, Highland Heights | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 801 North Olden St., Trenton | NJ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 477      
Initial Costs to Company, Buildings and Improvements 1,431      
Gross Amount at Which Carried at Close of Period, Land 477      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,431      
Total 1,908      
Accumulated Depreciation $ 293      
Date of Construction 1991      
Date Acquired 2010      
Retail Properties | 801 North Olden St., Trenton | NJ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 801 North Olden St., Trenton | NJ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1500 Pennington Rd., Trenton | NJ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 394      
Initial Costs to Company, Buildings and Improvements 1,181      
Gross Amount at Which Carried at Close of Period, Land 394      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,181      
Total 1,575      
Accumulated Depreciation $ 267      
Date of Construction 1985      
Date Acquired 2010      
Retail Properties | 1500 Pennington Rd., Trenton | NJ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1500 Pennington Rd., Trenton | NJ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 610 W 4Th St, Covington | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 582      
Initial Costs to Company, Buildings and Improvements 1,358      
Gross Amount at Which Carried at Close of Period, Land 582      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,358      
Total 1,940      
Accumulated Depreciation $ 280      
Date of Construction 1981      
Date Acquired 2010      
Retail Properties | 610 W 4Th St, Covington | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 610 W 4Th St, Covington | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1830 Easton Road, Somerset | NJ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 912      
Initial Costs to Company, Buildings and Improvements 2,735      
Gross Amount at Which Carried at Close of Period, Land 912      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,735      
Total 3,647      
Accumulated Depreciation $ 556      
Date of Construction 1992      
Date Acquired 2011      
Retail Properties | 1830 Easton Road, Somerset | NJ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1830 Easton Road, Somerset | NJ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5855 Blaine Avenue, Inver Grove Heights | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 592      
Initial Costs to Company, Buildings and Improvements 1,777      
Gross Amount at Which Carried at Close of Period, Land 592      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,777      
Total 2,369      
Accumulated Depreciation $ 381      
Date of Construction 1997      
Date Acquired 2011      
Retail Properties | 5855 Blaine Avenue, Inver Grove Heights | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5855 Blaine Avenue, Inver Grove Heights | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 14400 Weaver Lake Road, Maple Grove | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 611      
Initial Costs to Company, Buildings and Improvements 1,833      
Gross Amount at Which Carried at Close of Period, Land 611      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,833      
Total 2,444      
Accumulated Depreciation $ 399      
Date of Construction 1996      
Date Acquired 2011      
Retail Properties | 14400 Weaver Lake Road, Maple Grove | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 14400 Weaver Lake Road, Maple Grove | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1900 Adams Street, Mankato | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 712      
Initial Costs to Company, Buildings and Improvements 2,136      
Gross Amount at Which Carried at Close of Period, Land 712      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,136      
Total 2,848      
Accumulated Depreciation $ 435      
Date of Construction 1994      
Date Acquired 2011      
Retail Properties | 1900 Adams Street, Mankato | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1900 Adams Street, Mankato | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1018 Meadowlands Drive, Saint Paul | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 606      
Initial Costs to Company, Buildings and Improvements 1,817      
Gross Amount at Which Carried at Close of Period, Land 606      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,817      
Total 2,423      
Accumulated Depreciation $ 391      
Date of Construction 1994      
Date Acquired 2011      
Retail Properties | 1018 Meadowlands Drive, Saint Paul | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1018 Meadowlands Drive, Saint Paul | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2330 N. Highland Avenue, Jackson | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 204      
Initial Costs to Company, Buildings and Improvements 1,154      
Gross Amount at Which Carried at Close of Period, Land 204      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,154      
Total 1,358      
Accumulated Depreciation $ 217      
Date of Construction 1999      
Date Acquired 2011      
Retail Properties | 2330 N. Highland Avenue, Jackson | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2330 N. Highland Avenue, Jackson | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 477 East Main Street, Henderson | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 141      
Initial Costs to Company, Buildings and Improvements 800      
Gross Amount at Which Carried at Close of Period, Land 141      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 800      
Total 941      
Accumulated Depreciation $ 143      
Date of Construction 1986      
Date Acquired 2012      
Retail Properties | 477 East Main Street, Henderson | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 477 East Main Street, Henderson | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 565 West Church Street, Lexington | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 150      
Initial Costs to Company, Buildings and Improvements 848      
Gross Amount at Which Carried at Close of Period, Land 150      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 848      
Total 998      
Accumulated Depreciation $ 153      
Date of Construction 1995      
Date Acquired 2012      
Retail Properties | 565 West Church Street, Lexington | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 565 West Church Street, Lexington | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2479 North Central Avenue, Humboldt | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 118      
Initial Costs to Company, Buildings and Improvements 669      
Gross Amount at Which Carried at Close of Period, Land 118      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 669      
Total 787      
Accumulated Depreciation $ 134      
Date of Construction 1993      
Date Acquired 2012      
Retail Properties | 2479 North Central Avenue, Humboldt | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2479 North Central Avenue, Humboldt | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3645 N. Atlantic Ave, Cocoa Beach | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 283      
Initial Costs to Company, Buildings and Improvements 848      
Gross Amount at Which Carried at Close of Period, Land 283      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 848      
Total 1,131      
Accumulated Depreciation $ 148      
Date of Construction 1992      
Date Acquired 2012      
Retail Properties | 3645 N. Atlantic Ave, Cocoa Beach | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3645 N. Atlantic Ave, Cocoa Beach | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3755 W. Lake Mary Blvd, Lake Mary | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 422      
Initial Costs to Company, Buildings and Improvements 1,265      
Gross Amount at Which Carried at Close of Period, Land 422      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,265      
Total 1,687      
Accumulated Depreciation $ 207      
Date of Construction 1989      
Date Acquired 2012      
Retail Properties | 3755 W. Lake Mary Blvd, Lake Mary | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3755 W. Lake Mary Blvd, Lake Mary | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1860 State Road 44, New Smyrna Beach | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 382      
Initial Costs to Company, Buildings and Improvements 1,146      
Gross Amount at Which Carried at Close of Period, Land 382      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,146      
Total 1,528      
Accumulated Depreciation $ 234      
Date of Construction 2008      
Date Acquired 2012      
Retail Properties | 1860 State Road 44, New Smyrna Beach | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1860 State Road 44, New Smyrna Beach | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 10005 University Blvd, Orlando | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 351      
Initial Costs to Company, Buildings and Improvements 1,052      
Gross Amount at Which Carried at Close of Period, Land 351      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,052      
Total 1,403      
Accumulated Depreciation $ 182      
Date of Construction 1990      
Date Acquired 2012      
Retail Properties | 10005 University Blvd, Orlando | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 10005 University Blvd, Orlando | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 204 15th Street E, Tuscaloosa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 219      
Initial Costs to Company, Buildings and Improvements 656      
Gross Amount at Which Carried at Close of Period, Land 219      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 656      
Total 875      
Accumulated Depreciation $ 131      
Date of Construction 1996      
Date Acquired 2012      
Retail Properties | 204 15th Street E, Tuscaloosa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 204 15th Street E, Tuscaloosa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 302 Mall Blvd, Savannah | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 390      
Initial Costs to Company, Buildings and Improvements 1,170      
Gross Amount at Which Carried at Close of Period, Land 390      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,170      
Total 1,560      
Accumulated Depreciation $ 206      
Date of Construction 2009      
Date Acquired 2012      
Retail Properties | 302 Mall Blvd, Savannah | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 302 Mall Blvd, Savannah | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2631 Skidaway Road, Savannah | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 376      
Initial Costs to Company, Buildings and Improvements 1,129      
Gross Amount at Which Carried at Close of Period, Land 376      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,129      
Total 1,505      
Accumulated Depreciation $ 193      
Date of Construction 2009      
Date Acquired 2012      
Retail Properties | 2631 Skidaway Road, Savannah | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2631 Skidaway Road, Savannah | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3615 Mundy Mill Rd, Oakwood | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 400      
Initial Costs to Company, Buildings and Improvements 1,199      
Gross Amount at Which Carried at Close of Period, Land 400      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,199      
Total 1,599      
Accumulated Depreciation $ 208      
Date of Construction 2008      
Date Acquired 2012      
Retail Properties | 3615 Mundy Mill Rd, Oakwood | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3615 Mundy Mill Rd, Oakwood | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 301 W. General Screven Way, Hinesville | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 402      
Initial Costs to Company, Buildings and Improvements 1,207      
Gross Amount at Which Carried at Close of Period, Land 402      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,207      
Total 1,609      
Accumulated Depreciation $ 224      
Date of Construction 2008      
Date Acquired 2012      
Retail Properties | 301 W. General Screven Way, Hinesville | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 301 W. General Screven Way, Hinesville | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 113 Courthouse Road, Princeton | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 269      
Initial Costs to Company, Buildings and Improvements 1,524      
Gross Amount at Which Carried at Close of Period, Land 269      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,524      
Total 1,793      
Accumulated Depreciation $ 241      
Date of Construction 1976      
Date Acquired 2012      
Retail Properties | 113 Courthouse Road, Princeton | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 113 Courthouse Road, Princeton | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 211 Meadowfield Lane, Princeton | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 301      
Initial Costs to Company, Buildings and Improvements 1,703      
Gross Amount at Which Carried at Close of Period, Land 301      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,703      
Total 2,004      
Accumulated Depreciation $ 267      
Date of Construction 1991      
Date Acquired 2012      
Retail Properties | 211 Meadowfield Lane, Princeton | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 211 Meadowfield Lane, Princeton | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 283 Muskingum Drive, Marietta | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 246      
Initial Costs to Company, Buildings and Improvements 1,395      
Gross Amount at Which Carried at Close of Period, Land 246      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,395      
Total 1,641      
Accumulated Depreciation $ 214      
Date of Construction 2007      
Date Acquired 2012      
Retail Properties | 283 Muskingum Drive, Marietta | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 283 Muskingum Drive, Marietta | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 550 E. Main Street, Pomeroy | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 208      
Initial Costs to Company, Buildings and Improvements 1,178      
Gross Amount at Which Carried at Close of Period, Land 208      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,178      
Total 1,386      
Accumulated Depreciation $ 196      
Date of Construction 1997      
Date Acquired 2012      
Retail Properties | 550 E. Main Street, Pomeroy | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 550 E. Main Street, Pomeroy | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1503 Harrison Avenue, Elkins | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 452      
Initial Costs to Company, Buildings and Improvements 1,355      
Gross Amount at Which Carried at Close of Period, Land 452      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,355      
Total 1,807      
Accumulated Depreciation $ 213      
Date of Construction 1980      
Date Acquired 2012      
Retail Properties | 1503 Harrison Avenue, Elkins | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1503 Harrison Avenue, Elkins | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1610 N. Atherton Street, State College | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 365      
Initial Costs to Company, Buildings and Improvements 1,461      
Gross Amount at Which Carried at Close of Period, Land 365      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,461      
Total 1,826      
Accumulated Depreciation $ 221      
Date of Construction 1976      
Date Acquired 2012      
Retail Properties | 1610 N. Atherton Street, State College | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1610 N. Atherton Street, State College | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 811 Northside Drive, Summerville | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 109      
Initial Costs to Company, Buildings and Improvements 2,366      
Gross Amount at Which Carried at Close of Period, Land 109      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,366      
Total 2,475      
Accumulated Depreciation $ 59      
Date of Construction 1993      
Date Acquired 2017      
Retail Properties | 811 Northside Drive, Summerville | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 811 Northside Drive, Summerville | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 75 Tower Road, Oxford | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 240      
Initial Costs to Company, Buildings and Improvements 958      
Gross Amount at Which Carried at Close of Period, Land 240      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 958      
Total 1,198      
Accumulated Depreciation $ 155      
Date of Construction 1999      
Date Acquired 2012      
Retail Properties | 75 Tower Road, Oxford | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 75 Tower Road, Oxford | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 150 Leon Smith Parkway, Oxford | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 320      
Initial Costs to Company, Buildings and Improvements 158      
Costs Capitalized Subsequent to Acquisition, Improvements 1,000      
Gross Amount at Which Carried at Close of Period, Land 320      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,158      
Total 1,478      
Accumulated Depreciation $ 54      
Date of Construction 2009      
Date Acquired 2012      
Retail Properties | 150 Leon Smith Parkway, Oxford | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 170 Vaughn Lane, Pell City | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 237      
Initial Costs to Company, Buildings and Improvements 1,340      
Gross Amount at Which Carried at Close of Period, Land 237      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,340      
Total 1,577      
Accumulated Depreciation $ 199      
Date of Construction 2002      
Date Acquired 2012      
Retail Properties | 170 Vaughn Lane, Pell City | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 170 Vaughn Lane, Pell City | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 204 15th Street E, Tuscaloosa | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 449      
Initial Costs to Company, Buildings and Improvements 1,796      
Gross Amount at Which Carried at Close of Period, Land 449      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,796      
Total 2,245      
Accumulated Depreciation $ 268      
Date of Construction 2010      
Date Acquired 2012      
Retail Properties | 204 15th Street E, Tuscaloosa | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 204 15th Street E, Tuscaloosa | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 419 North Pelham Road, Jacksonville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 190      
Initial Costs to Company, Buildings and Improvements 1,077      
Gross Amount at Which Carried at Close of Period, Land 190      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,077      
Total 1,267      
Accumulated Depreciation $ 169      
Date of Construction 2000      
Date Acquired 2012      
Retail Properties | 419 North Pelham Road, Jacksonville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 419 North Pelham Road, Jacksonville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4422 Old Birmingham Road, Tuscaloosa | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 422      
Initial Costs to Company, Buildings and Improvements 1,686      
Gross Amount at Which Carried at Close of Period, Land 422      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,686      
Total 2,108      
Accumulated Depreciation $ 262      
Date of Construction 2001      
Date Acquired 2012      
Retail Properties | 4422 Old Birmingham Road, Tuscaloosa | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4422 Old Birmingham Road, Tuscaloosa | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1501 E. Hillsborough Ave., Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 208      
Initial Costs to Company, Buildings and Improvements 1,179      
Gross Amount at Which Carried at Close of Period, Land 208      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,179      
Total 1,387      
Accumulated Depreciation $ 174      
Date of Construction 1980      
Date Acquired 2012      
Retail Properties | 1501 E. Hillsborough Ave., Tampa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1501 E. Hillsborough Ave., Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6620 E. Dr. MLK Blvd, Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 288      
Initial Costs to Company, Buildings and Improvements 1,634      
Gross Amount at Which Carried at Close of Period, Land 288      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,634      
Total 1,922      
Accumulated Depreciation $ 249      
Date of Construction 1987      
Date Acquired 2012      
Retail Properties | 6620 E. Dr. MLK Blvd, Tampa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6620 E. Dr. MLK Blvd, Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5212 Brook Road, Richmond | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 202      
Initial Costs to Company, Buildings and Improvements 1,147      
Gross Amount at Which Carried at Close of Period, Land 202      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,147      
Total 1,349      
Accumulated Depreciation $ 178      
Date of Construction 1984      
Date Acquired 2012      
Retail Properties | 5212 Brook Road, Richmond | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5212 Brook Road, Richmond | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 153 East Swedesford Road, Exton | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 470      
Initial Costs to Company, Buildings and Improvements 1,882      
Gross Amount at Which Carried at Close of Period, Land 470      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,882      
Total 2,352      
Accumulated Depreciation $ 299      
Date of Construction 1982      
Date Acquired 2012      
Retail Properties | 153 East Swedesford Road, Exton | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 153 East Swedesford Road, Exton | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4507 Jefferson David Highway, Richmond | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 133      
Initial Costs to Company, Buildings and Improvements 755      
Gross Amount at Which Carried at Close of Period, Land 133      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 755      
Total 888      
Accumulated Depreciation $ 128      
Date of Construction 1981      
Date Acquired 2012      
Retail Properties | 4507 Jefferson David Highway, Richmond | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4507 Jefferson David Highway, Richmond | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 220 Lancaster Avenue, Paoli | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 360      
Initial Costs to Company, Buildings and Improvements 1,440      
Gross Amount at Which Carried at Close of Period, Land 360      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,440      
Total 1,800      
Accumulated Depreciation $ 214      
Date of Construction 1982      
Date Acquired 2012      
Retail Properties | 220 Lancaster Avenue, Paoli | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 220 Lancaster Avenue, Paoli | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4510 Challenger Avenue, Roanoke | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 828      
Initial Costs to Company, Buildings and Improvements 1,965      
Gross Amount at Which Carried at Close of Period, Land 828      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,965      
Total 2,793      
Accumulated Depreciation $ 277      
Date of Construction 2006      
Date Acquired 2013      
Retail Properties | 4510 Challenger Avenue, Roanoke | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4510 Challenger Avenue, Roanoke | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 706 MLK Jr. Blvd W, Seffner | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 127      
Initial Costs to Company, Buildings and Improvements 1,910      
Gross Amount at Which Carried at Close of Period, Land 127      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,910      
Total 2,037      
Accumulated Depreciation $ 232      
Date of Construction 1992      
Date Acquired 2013      
Retail Properties | 706 MLK Jr. Blvd W, Seffner | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 706 MLK Jr. Blvd W, Seffner | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6004 14th Street, Bradenton | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 277      
Initial Costs to Company, Buildings and Improvements 1,621      
Gross Amount at Which Carried at Close of Period, Land 277      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,621      
Total 1,898      
Accumulated Depreciation $ 203      
Date of Construction 1996      
Date Acquired 2013      
Retail Properties | 6004 14th Street, Bradenton | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6004 14th Street, Bradenton | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7313 Gall Blvd, Zephyrhills, | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 127      
Initial Costs to Company, Buildings and Improvements 1,696      
Gross Amount at Which Carried at Close of Period, Land 127      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,696      
Total 1,823      
Accumulated Depreciation $ 213      
Date of Construction 1992      
Date Acquired 2013      
Retail Properties | 7313 Gall Blvd, Zephyrhills, | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7313 Gall Blvd, Zephyrhills, | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3600 4th Street North, Saint Petersburg | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 233      
Initial Costs to Company, Buildings and Improvements 1,440      
Gross Amount at Which Carried at Close of Period, Land 233      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,440      
Total 1,673      
Accumulated Depreciation $ 177      
Date of Construction 1988      
Date Acquired 2013      
Retail Properties | 3600 4th Street North, Saint Petersburg | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3600 4th Street North, Saint Petersburg | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7620 W Hillsborough, Tampa | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 189      
Initial Costs to Company, Buildings and Improvements 1,234      
Gross Amount at Which Carried at Close of Period, Land 189      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,234      
Total 1,423      
Accumulated Depreciation $ 163      
Date of Construction 1996      
Date Acquired 2013      
Retail Properties | 7620 W Hillsborough, Tampa | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7620 W Hillsborough, Tampa | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 12816 US Highway 301, Dade City | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 163      
Initial Costs to Company, Buildings and Improvements 802      
Gross Amount at Which Carried at Close of Period, Land 163      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 802      
Total 965      
Accumulated Depreciation $ 114      
Date of Construction 2008      
Date Acquired 2013      
Retail Properties | 12816 US Highway 301, Dade City | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 12816 US Highway 301, Dade City | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5801 Stevens Road, White Marsh | MD        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 3,223      
Initial Costs to Company, Buildings and Improvements 200      
Gross Amount at Which Carried at Close of Period, Land 3,223      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 200      
Total 3,423      
Accumulated Depreciation $ 38      
Date of Construction 1986      
Date Acquired 2013      
Retail Properties | 5801 Stevens Road, White Marsh | MD | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5801 Stevens Road, White Marsh | MD | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 8309 Quarry Road, Manassas | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,187      
Initial Costs to Company, Buildings and Improvements 197      
Gross Amount at Which Carried at Close of Period, Land 1,187      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 197      
Total 1,384      
Accumulated Depreciation $ 31      
Date of Construction 1986      
Date Acquired 2013      
Retail Properties | 8309 Quarry Road, Manassas | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 8309 Quarry Road, Manassas | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 580 Church Street, Morrisville | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 235      
Initial Costs to Company, Buildings and Improvements 46      
Gross Amount at Which Carried at Close of Period, Land 235      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 46      
Total 281      
Accumulated Depreciation $ 9      
Date of Construction 1960      
Date Acquired 2013      
Retail Properties | 580 Church Street, Morrisville | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 580 Church Street, Morrisville | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5191 Concord Road, Aston | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,554      
Initial Costs to Company, Buildings and Improvements 126      
Gross Amount at Which Carried at Close of Period, Land 2,554      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 126      
Total 2,680      
Accumulated Depreciation $ 22      
Date of Construction 1984      
Date Acquired 2013      
Retail Properties | 5191 Concord Road, Aston | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5191 Concord Road, Aston | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 11245 Mosteller Road, Sharonville | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,001      
Initial Costs to Company, Buildings and Improvements 173      
Gross Amount at Which Carried at Close of Period, Land 1,001      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 173      
Total 1,174      
Accumulated Depreciation $ 38      
Date of Construction 1976      
Date Acquired 2013      
Retail Properties | 11245 Mosteller Road, Sharonville | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 11245 Mosteller Road, Sharonville | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4877 Vulcan Avenue, Columbus | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 757      
Initial Costs to Company, Buildings and Improvements 77      
Gross Amount at Which Carried at Close of Period, Land 757      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 77      
Total 834      
Accumulated Depreciation $ 14      
Date of Construction 1981      
Date Acquired 2013      
Retail Properties | 4877 Vulcan Avenue, Columbus | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4877 Vulcan Avenue, Columbus | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 899 Marshall Phelps Road, Windsor | CONNECTICUT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,887      
Initial Costs to Company, Buildings and Improvements 204      
Gross Amount at Which Carried at Close of Period, Land 1,887      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 204      
Total 2,091      
Accumulated Depreciation $ 45      
Date of Construction 1986      
Date Acquired 2013      
Retail Properties | 899 Marshall Phelps Road, Windsor | CONNECTICUT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 899 Marshall Phelps Road, Windsor | CONNECTICUT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 360 Bilmar Drive, Pitsburgh | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,691      
Initial Costs to Company, Buildings and Improvements 244      
Gross Amount at Which Carried at Close of Period, Land 1,691      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 244      
Total 1,935      
Accumulated Depreciation $ 45      
Date of Construction 1989      
Date Acquired 2013      
Retail Properties | 360 Bilmar Drive, Pitsburgh | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 360 Bilmar Drive, Pitsburgh | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 438 Auto Vista Drive, Palmdale | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 995      
Initial Costs to Company, Buildings and Improvements 2,811      
Gross Amount at Which Carried at Close of Period, Land 995      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,811      
Total 3,806      
Accumulated Depreciation $ 460      
Date of Construction 1991      
Date Acquired 2013      
Retail Properties | 438 Auto Vista Drive, Palmdale | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 438 Auto Vista Drive, Palmdale | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 38958 Carriage Way, Palmdale | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 670      
Initial Costs to Company, Buildings and Improvements 1,610      
Gross Amount at Which Carried at Close of Period, Land 670      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,610      
Total 2,280      
Accumulated Depreciation $ 282      
Date of Construction 2006      
Date Acquired 2013      
Retail Properties | 38958 Carriage Way, Palmdale | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 38958 Carriage Way, Palmdale | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 39012 Carriage Way, Palmdale | CALIFORNIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 987      
Initial Costs to Company, Buildings and Improvements 3,817      
Gross Amount at Which Carried at Close of Period, Land 987      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,817      
Total 4,804      
Accumulated Depreciation $ 560      
Date of Construction 1991      
Date Acquired 2013      
Retail Properties | 39012 Carriage Way, Palmdale | CALIFORNIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 39012 Carriage Way, Palmdale | CALIFORNIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 185 E. New Circle Road, Lexington | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 567      
Initial Costs to Company, Buildings and Improvements 3,053      
Gross Amount at Which Carried at Close of Period, Land 567      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,053      
Total 3,620      
Accumulated Depreciation $ 362      
Date of Construction 2002      
Date Acquired 2014      
Retail Properties | 185 E. New Circle Road, Lexington | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 185 E. New Circle Road, Lexington | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 301 South White Sands Blvd, Alamogordo | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 22      
Initial Costs to Company, Buildings and Improvements 2,117      
Gross Amount at Which Carried at Close of Period, Land 22      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,117      
Total 2,139      
Accumulated Depreciation $ 232      
Date of Construction 1983      
Date Acquired 2014      
Retail Properties | 301 South White Sands Blvd, Alamogordo | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 301 South White Sands Blvd, Alamogordo | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1101 N. Main Street, Roswell | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 64      
Initial Costs to Company, Buildings and Improvements 2,059      
Gross Amount at Which Carried at Close of Period, Land 64      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,059      
Total 2,123      
Accumulated Depreciation $ 219      
Date of Construction 1990      
Date Acquired 2014      
Retail Properties | 1101 N. Main Street, Roswell | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1101 N. Main Street, Roswell | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1300 N. Moore Road, Moore | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 64      
Initial Costs to Company, Buildings and Improvements 1,249      
Gross Amount at Which Carried at Close of Period, Land 64      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,249      
Total 1,313      
Accumulated Depreciation $ 143      
Date of Construction 1975      
Date Acquired 2014      
Retail Properties | 1300 N. Moore Road, Moore | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1300 N. Moore Road, Moore | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4518 SE 29th Street, Del City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 40      
Initial Costs to Company, Buildings and Improvements 1,370      
Gross Amount at Which Carried at Close of Period, Land 40      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,370      
Total 1,410      
Accumulated Depreciation $ 150      
Date of Construction 1980      
Date Acquired 2014      
Retail Properties | 4518 SE 29th Street, Del City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4518 SE 29th Street, Del City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4500 S. Western Avenue, Oklahoma City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 105      
Initial Costs to Company, Buildings and Improvements 1,150      
Gross Amount at Which Carried at Close of Period, Land 105      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,150      
Total 1,255      
Accumulated Depreciation $ 124      
Date of Construction 1977      
Date Acquired 2014      
Retail Properties | 4500 S. Western Avenue, Oklahoma City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4500 S. Western Avenue, Oklahoma City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 13606 N. Pennsylvania Avenue, Oklahoma City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 721      
Initial Costs to Company, Buildings and Improvements 1,049      
Gross Amount at Which Carried at Close of Period, Land 721      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,049      
Total 1,770      
Accumulated Depreciation $ 129      
Date of Construction 2003      
Date Acquired 2014      
Retail Properties | 13606 N. Pennsylvania Avenue, Oklahoma City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 13606 N. Pennsylvania Avenue, Oklahoma City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 901 E. State Highway 152, Mustang | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 70      
Initial Costs to Company, Buildings and Improvements 1,722      
Gross Amount at Which Carried at Close of Period, Land 70      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,722      
Total 1,792      
Accumulated Depreciation $ 190      
Date of Construction 2004      
Date Acquired 2014      
Retail Properties | 901 E. State Highway 152, Mustang | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 901 E. State Highway 152, Mustang | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1170 Garth Brooks Blvd, Yukon | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 63      
Initial Costs to Company, Buildings and Improvements 1,851      
Gross Amount at Which Carried at Close of Period, Land 63      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,851      
Total 1,914      
Accumulated Depreciation $ 209      
Date of Construction 1994      
Date Acquired 2014      
Retail Properties | 1170 Garth Brooks Blvd, Yukon | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1170 Garth Brooks Blvd, Yukon | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3815 Southwest Loop 820, Fort Worth | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 487      
Initial Costs to Company, Buildings and Improvements 934      
Gross Amount at Which Carried at Close of Period, Land 487      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 934      
Total 1,421      
Accumulated Depreciation $ 106      
Date of Construction 2003      
Date Acquired 2014      
Retail Properties | 3815 Southwest Loop 820, Fort Worth | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3815 Southwest Loop 820, Fort Worth | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 823 South Second Avenue, Kearney | NE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 113      
Initial Costs to Company, Buildings and Improvements 1,242      
Gross Amount at Which Carried at Close of Period, Land 113      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,242      
Total 1,355      
Accumulated Depreciation $ 140      
Date of Construction 1982      
Date Acquired 2014      
Retail Properties | 823 South Second Avenue, Kearney | NE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 823 South Second Avenue, Kearney | NE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4001 Second Avenue, Kearney | NE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 176      
Initial Costs to Company, Buildings and Improvements 1,238      
Gross Amount at Which Carried at Close of Period, Land 176      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,238      
Total 1,414      
Accumulated Depreciation $ 144      
Date of Construction 1991      
Date Acquired 2014      
Retail Properties | 4001 Second Avenue, Kearney | NE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4001 Second Avenue, Kearney | NE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3503 West State Street, Grand Island | NE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 425      
Gross Amount at Which Carried at Close of Period, Land 425      
Total $ 425      
Date of Construction 1992      
Date Acquired 2014      
Retail Properties | 103 Pony Express Lane, Ogallala | NE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 291      
Initial Costs to Company, Buildings and Improvements 1,243      
Gross Amount at Which Carried at Close of Period, Land 291      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,243      
Total 1,534      
Accumulated Depreciation $ 155      
Date of Construction 1986      
Date Acquired 2014      
Retail Properties | 103 Pony Express Lane, Ogallala | NE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 103 Pony Express Lane, Ogallala | NE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 500 S. George Nigh Expy, McAlester | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 52      
Initial Costs to Company, Buildings and Improvements 1,521      
Gross Amount at Which Carried at Close of Period, Land 52      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,521      
Total 1,573      
Accumulated Depreciation $ 172      
Date of Construction 2006      
Date Acquired 2014      
Retail Properties | 500 S. George Nigh Expy, McAlester | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 500 S. George Nigh Expy, McAlester | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3834 North Lincoln Blvd, Oklahoma City | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 466      
Initial Costs to Company, Buildings and Improvements 928      
Gross Amount at Which Carried at Close of Period, Land 466      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 928      
Total 1,394      
Accumulated Depreciation $ 76      
Date of Construction 1970      
Date Acquired 2015      
Retail Properties | 3834 North Lincoln Blvd, Oklahoma City | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3834 North Lincoln Blvd, Oklahoma City | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6629 San Dario Avenue, Laredo | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 425      
Initial Costs to Company, Buildings and Improvements 2,476      
Gross Amount at Which Carried at Close of Period, Land 425      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,476      
Total 2,901      
Accumulated Depreciation $ 258      
Date of Construction 2001      
Date Acquired 2014      
Retail Properties | 6629 San Dario Avenue, Laredo | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6629 San Dario Avenue, Laredo | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2424 W Ferguson Drive, Mt. Pleasant | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,141      
Initial Costs to Company, Buildings and Improvements 997      
Gross Amount at Which Carried at Close of Period, Land 1,141      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 997      
Total 2,138      
Accumulated Depreciation $ 157      
Date of Construction 1972      
Date Acquired 2014      
Retail Properties | 2424 W Ferguson Drive, Mt. Pleasant | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2424 W Ferguson Drive, Mt. Pleasant | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 200 Industrial Road, Madill | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 739      
Initial Costs to Company, Buildings and Improvements 714      
Gross Amount at Which Carried at Close of Period, Land 739      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 714      
Total 1,453      
Accumulated Depreciation $ 67      
Date of Construction 1993      
Date Acquired 2014      
Retail Properties | 200 Industrial Road, Madill | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 200 Industrial Road, Madill | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3621 East Loop 820 S, Fort Worth | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,142      
Initial Costs to Company, Buildings and Improvements 554      
Gross Amount at Which Carried at Close of Period, Land 1,142      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 554      
Total 1,696      
Accumulated Depreciation $ 67      
Date of Construction 1980      
Date Acquired 2014      
Retail Properties | 3621 East Loop 820 S, Fort Worth | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3621 East Loop 820 S, Fort Worth | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 10111 N Walton Walker Blvd, Dallas | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 454      
Initial Costs to Company, Buildings and Improvements 449      
Gross Amount at Which Carried at Close of Period, Land 454      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 449      
Total 903      
Accumulated Depreciation $ 62      
Date of Construction 1984      
Date Acquired 2014      
Retail Properties | 10111 N Walton Walker Blvd, Dallas | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 10111 N Walton Walker Blvd, Dallas | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1801 E. Central Freeway, Wichita Falls | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 674      
Initial Costs to Company, Buildings and Improvements 186      
Gross Amount at Which Carried at Close of Period, Land 674      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 186      
Total 860      
Accumulated Depreciation $ 25      
Date of Construction 1995      
Date Acquired 2014      
Retail Properties | 1801 E. Central Freeway, Wichita Falls | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1801 E. Central Freeway, Wichita Falls | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 20260 I-35 South, Lytle | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 97      
Initial Costs to Company, Buildings and Improvements 815      
Gross Amount at Which Carried at Close of Period, Land 97      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 815      
Total 912      
Accumulated Depreciation $ 72      
Date of Construction 2008      
Date Acquired 2015      
Retail Properties | 20260 I-35 South, Lytle | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 20260 I-35 South, Lytle | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 17902 US Hwy 59, New Caney | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 37      
Initial Costs to Company, Buildings and Improvements 875      
Gross Amount at Which Carried at Close of Period, Land 37      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 875      
Total 912      
Accumulated Depreciation $ 69      
Date of Construction 1972      
Date Acquired 2015      
Retail Properties | 17902 US Hwy 59, New Caney | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 17902 US Hwy 59, New Caney | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3441 Clemson Boulevard, Anderson | SC        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 140      
Initial Costs to Company, Buildings and Improvements 2,164      
Gross Amount at Which Carried at Close of Period, Land 140      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,164      
Total 2,304      
Accumulated Depreciation $ 173      
Date of Construction 2004      
Date Acquired 2015      
Retail Properties | 3441 Clemson Boulevard, Anderson | SC | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3441 Clemson Boulevard, Anderson | SC | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 156 S River Road, St. George | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 362      
Initial Costs to Company, Buildings and Improvements 2,447      
Gross Amount at Which Carried at Close of Period, Land 362      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,447      
Total 2,809      
Accumulated Depreciation $ 218      
Date of Construction 2000      
Date Acquired 2015      
Retail Properties | 156 S River Road, St. George | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 156 S River Road, St. George | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1280 N 30 West, Tooele | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 389      
Initial Costs to Company, Buildings and Improvements 1,945      
Gross Amount at Which Carried at Close of Period, Land 389      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,945      
Total 2,334      
Accumulated Depreciation $ 170      
Date of Construction 2000      
Date Acquired 2015      
Retail Properties | 1280 N 30 West, Tooele | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1280 N 30 West, Tooele | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1352 S Providence Center Ct., West Valley City | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 333      
Initial Costs to Company, Buildings and Improvements 2,544      
Gross Amount at Which Carried at Close of Period, Land 333      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,544      
Total 2,877      
Accumulated Depreciation $ 234      
Date of Construction 2000      
Date Acquired 2015      
Retail Properties | 1352 S Providence Center Ct., West Valley City | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1352 S Providence Center Ct., West Valley City | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1622 N 1000 West, Layton | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 303      
Initial Costs to Company, Buildings and Improvements 3,034      
Gross Amount at Which Carried at Close of Period, Land 303      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,034      
Total 3,337      
Accumulated Depreciation $ 250      
Date of Construction 1995      
Date Acquired 2015      
Retail Properties | 1622 N 1000 West, Layton | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1622 N 1000 West, Layton | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2175 W City Center Ct., West Valley City | UT        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 327      
Initial Costs to Company, Buildings and Improvements 2,222      
Gross Amount at Which Carried at Close of Period, Land 327      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,222      
Total 2,549      
Accumulated Depreciation $ 188      
Date of Construction 1998      
Date Acquired 2015      
Retail Properties | 2175 W City Center Ct., West Valley City | UT | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2175 W City Center Ct., West Valley City | UT | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 17809 108th Avenue SE, Renton | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 539      
Initial Costs to Company, Buildings and Improvements 1,141      
Gross Amount at Which Carried at Close of Period, Land 539      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,141      
Total 1,680      
Accumulated Depreciation $ 93      
Date of Construction 1986      
Date Acquired 2015      
Retail Properties | 17809 108th Avenue SE, Renton | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 17809 108th Avenue SE, Renton | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 10611 Pacific Avenue S, Tacoma | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 807      
Initial Costs to Company, Buildings and Improvements 643      
Gross Amount at Which Carried at Close of Period, Land 807      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 643      
Total 1,450      
Accumulated Depreciation $ 66      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 10611 Pacific Avenue S, Tacoma | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 10611 Pacific Avenue S, Tacoma | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 8401 S Tacoma Way, Tacoma | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 562      
Initial Costs to Company, Buildings and Improvements 897      
Gross Amount at Which Carried at Close of Period, Land 562      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 897      
Total 1,459      
Accumulated Depreciation $ 76      
Date of Construction 1993      
Date Acquired 2015      
Retail Properties | 8401 S Tacoma Way, Tacoma | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 8401 S Tacoma Way, Tacoma | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 16350 West Valley Highway, Tukwila | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,170      
Initial Costs to Company, Buildings and Improvements 419      
Gross Amount at Which Carried at Close of Period, Land 1,170      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 419      
Total 1,589      
Accumulated Depreciation $ 67      
Date of Construction 1993      
Date Acquired 2015      
Retail Properties | 16350 West Valley Highway, Tukwila | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 16350 West Valley Highway, Tukwila | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2031 SW Campus Drive, Federal Way | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 334      
Initial Costs to Company, Buildings and Improvements 1,088      
Gross Amount at Which Carried at Close of Period, Land 334      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,088      
Total 1,422      
Accumulated Depreciation $ 81      
Date of Construction 1995      
Date Acquired 2015      
Retail Properties | 2031 SW Campus Drive, Federal Way | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2031 SW Campus Drive, Federal Way | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9511 Bridgeport Way, Lakewood | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,372      
Initial Costs to Company, Buildings and Improvements 878      
Gross Amount at Which Carried at Close of Period, Land 1,372      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 878      
Total 2,250      
Accumulated Depreciation $ 87      
Date of Construction 1995      
Date Acquired 2015      
Retail Properties | 9511 Bridgeport Way, Lakewood | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9511 Bridgeport Way, Lakewood | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1308 S. Burlington Boulevard, Burlington | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 178      
Initial Costs to Company, Buildings and Improvements 1,982      
Gross Amount at Which Carried at Close of Period, Land 178      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,982      
Total 2,160      
Accumulated Depreciation $ 148      
Date of Construction 2000      
Date Acquired 2015      
Retail Properties | 1308 S. Burlington Boulevard, Burlington | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1308 S. Burlington Boulevard, Burlington | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 515 SW 128th Street, Everett | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 175      
Initial Costs to Company, Buildings and Improvements 1,473      
Gross Amount at Which Carried at Close of Period, Land 175      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,473      
Total 1,648      
Accumulated Depreciation $ 118      
Date of Construction 1986      
Date Acquired 2015      
Retail Properties | 515 SW 128th Street, Everett | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 515 SW 128th Street, Everett | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 702 S Meridian, Puyallup | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 622      
Gross Amount at Which Carried at Close of Period, Land 622      
Total $ 622      
Date of Construction 1994      
Date Acquired 2015      
Retail Properties | 1120 E. Wishkah Street, Aberdeen | WA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 218      
Initial Costs to Company, Buildings and Improvements 1,446      
Gross Amount at Which Carried at Close of Period, Land 218      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,446      
Total 1,664      
Accumulated Depreciation $ 109      
Date of Construction 2006      
Date Acquired 2015      
Retail Properties | 1120 E. Wishkah Street, Aberdeen | WA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1120 E. Wishkah Street, Aberdeen | WA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2870 Florence Boulevard, Florence | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 337      
Initial Costs to Company, Buildings and Improvements 2,609      
Gross Amount at Which Carried at Close of Period, Land 337      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,609      
Total 2,946      
Accumulated Depreciation $ 188      
Date of Construction 2011      
Date Acquired 2015      
Retail Properties | 2870 Florence Boulevard, Florence | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2870 Florence Boulevard, Florence | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 945 Wimberly Drive SW, Decatur | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 364      
Initial Costs to Company, Buildings and Improvements 3,708      
Gross Amount at Which Carried at Close of Period, Land 364      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,708      
Total 4,072      
Accumulated Depreciation $ 264      
Date of Construction 2014      
Date Acquired 2015      
Retail Properties | 945 Wimberly Drive SW, Decatur | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 945 Wimberly Drive SW, Decatur | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3485 Tupelo Commons, Tupelo | MS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 297      
Initial Costs to Company, Buildings and Improvements 3,030      
Gross Amount at Which Carried at Close of Period, Land 297      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,030      
Total 3,327      
Accumulated Depreciation $ 211      
Date of Construction 2012      
Date Acquired 2015      
Retail Properties | 3485 Tupelo Commons, Tupelo | MS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3485 Tupelo Commons, Tupelo | MS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2212 East Parkway, Russellvillee | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 250      
Initial Costs to Company, Buildings and Improvements 3,354      
Gross Amount at Which Carried at Close of Period, Land 250      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,354      
Total 3,604      
Accumulated Depreciation $ 241      
Date of Construction 2014      
Date Acquired 2015      
Retail Properties | 2212 East Parkway, Russellvillee | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2212 East Parkway, Russellvillee | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 431 East Main Street, Adamsville | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 59      
Initial Costs to Company, Buildings and Improvements 1,675      
Gross Amount at Which Carried at Close of Period, Land 59      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,675      
Total 1,734      
Accumulated Depreciation $ 108      
Date of Construction 2005      
Date Acquired 2015      
Retail Properties | 431 East Main Street, Adamsville | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 431 East Main Street, Adamsville | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5701 Veterans Memorial Drive, Adamsville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 123      
Initial Costs to Company, Buildings and Improvements 1,924      
Gross Amount at Which Carried at Close of Period, Land 123      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,924      
Total 2,047      
Accumulated Depreciation $ 130      
Date of Construction 1989      
Date Acquired 2015      
Retail Properties | 5701 Veterans Memorial Drive, Adamsville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5701 Veterans Memorial Drive, Adamsville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 18 Big Valley Rd, Alexandra | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 79      
Initial Costs to Company, Buildings and Improvements 2,318      
Gross Amount at Which Carried at Close of Period, Land 79      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,318      
Total 2,397      
Accumulated Depreciation $ 146      
Date of Construction 2004      
Date Acquired 2015      
Retail Properties | 18 Big Valley Rd, Alexandra | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 18 Big Valley Rd, Alexandra | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 36966 US Hwy 231, Ashville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 124      
Initial Costs to Company, Buildings and Improvements 1,696      
Gross Amount at Which Carried at Close of Period, Land 124      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,696      
Total 1,820      
Accumulated Depreciation $ 106      
Date of Construction 1999      
Date Acquired 2015      
Retail Properties | 36966 US Hwy 231, Ashville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 36966 US Hwy 231, Ashville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 307 US Hwy 31 North, Athens | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 143      
Initial Costs to Company, Buildings and Improvements 1,996      
Gross Amount at Which Carried at Close of Period, Land 143      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,996      
Total 2,139      
Accumulated Depreciation $ 125      
Date of Construction 2007      
Date Acquired 2015      
Retail Properties | 307 US Hwy 31 North, Athens | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 307 US Hwy 31 North, Athens | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 31128 1st Avenue NE, Carbon Hill | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 54      
Initial Costs to Company, Buildings and Improvements 1,634      
Gross Amount at Which Carried at Close of Period, Land 54      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,634      
Total 1,688      
Accumulated Depreciation $ 105      
Date of Construction 1998      
Date Acquired 2015      
Retail Properties | 31128 1st Avenue NE, Carbon Hill | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 31128 1st Avenue NE, Carbon Hill | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1190 North Park Street, Carrollton | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 77      
Initial Costs to Company, Buildings and Improvements 2,030      
Gross Amount at Which Carried at Close of Period, Land 77      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,030      
Total 2,107      
Accumulated Depreciation $ 127      
Date of Construction 2008      
Date Acquired 2015      
Retail Properties | 1190 North Park Street, Carrollton | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1190 North Park Street, Carrollton | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 55 Birmingham Road, Centreville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 140      
Initial Costs to Company, Buildings and Improvements 2,251      
Gross Amount at Which Carried at Close of Period, Land 140      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,251      
Total 2,391      
Accumulated Depreciation $ 136      
Date of Construction 2013      
Date Acquired 2015      
Retail Properties | 55 Birmingham Road, Centreville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 55 Birmingham Road, Centreville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3180 Hwy 157, Cullman | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 71      
Initial Costs to Company, Buildings and Improvements 1,799      
Gross Amount at Which Carried at Close of Period, Land 71      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,799      
Total 1,870      
Accumulated Depreciation $ 111      
Date of Construction 1997      
Date Acquired 2015      
Retail Properties | 3180 Hwy 157, Cullman | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3180 Hwy 157, Cullman | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1641 Main Street SW, Cullman | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 79      
Initial Costs to Company, Buildings and Improvements 1,949      
Gross Amount at Which Carried at Close of Period, Land 79      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,949      
Total 2,028      
Accumulated Depreciation $ 126      
Date of Construction 2006      
Date Acquired 2015      
Retail Properties | 1641 Main Street SW, Cullman | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1641 Main Street SW, Cullman | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1414 Rainbow Drive, Gadsden | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 42      
Initial Costs to Company, Buildings and Improvements 2,571      
Gross Amount at Which Carried at Close of Period, Land 42      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,571      
Total 2,613      
Accumulated Depreciation $ 157      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 1414 Rainbow Drive, Gadsden | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1414 Rainbow Drive, Gadsden | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2181 Hwy 78 East, Dora | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 18      
Initial Costs to Company, Buildings and Improvements 2,280      
Gross Amount at Which Carried at Close of Period, Land 18      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,280      
Total 2,298      
Accumulated Depreciation $ 131      
Date of Construction 1968      
Date Acquired 2015      
Retail Properties | 2181 Hwy 78 East, Dora | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2181 Hwy 78 East, Dora | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 15266 Hwy 278, Double Springs | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 306      
Initial Costs to Company, Buildings and Improvements 1,752      
Gross Amount at Which Carried at Close of Period, Land 306      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,752      
Total 2,058      
Accumulated Depreciation $ 114      
Date of Construction 1995      
Date Acquired 2015      
Retail Properties | 15266 Hwy 278, Double Springs | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 15266 Hwy 278, Double Springs | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 22714 AL Hwy 24, Moulton | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 117      
Initial Costs to Company, Buildings and Improvements 1,752      
Gross Amount at Which Carried at Close of Period, Land 117      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,752      
Total 1,869      
Accumulated Depreciation $ 115      
Date of Construction 2003      
Date Acquired 2015      
Retail Properties | 22714 AL Hwy 24, Moulton | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 22714 AL Hwy 24, Moulton | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 14445 US Hwy 431, Guntersville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 382      
Initial Costs to Company, Buildings and Improvements 2,020      
Gross Amount at Which Carried at Close of Period, Land 382      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,020      
Total 2,402      
Accumulated Depreciation $ 134      
Date of Construction 2015      
Date Acquired 2015      
Retail Properties | 14445 US Hwy 431, Guntersville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 14445 US Hwy 431, Guntersville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5320 Hwy 280 East, Harpersville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 48      
Initial Costs to Company, Buildings and Improvements 2,645      
Gross Amount at Which Carried at Close of Period, Land 48      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,645      
Total 2,693      
Accumulated Depreciation $ 156      
Date of Construction 1995      
Date Acquired 2015      
Retail Properties | 5320 Hwy 280 East, Harpersville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5320 Hwy 280 East, Harpersville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5888 Harvest Highway 53, Harvest | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 163      
Initial Costs to Company, Buildings and Improvements 2,060      
Gross Amount at Which Carried at Close of Period, Land 163      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,060      
Total 2,223      
Accumulated Depreciation $ 132      
Date of Construction 2014      
Date Acquired 2015      
Retail Properties | 5888 Harvest Highway 53, Harvest | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5888 Harvest Highway 53, Harvest | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 520 East Main Street, Henderson | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 111      
Initial Costs to Company, Buildings and Improvements 1,608      
Gross Amount at Which Carried at Close of Period, Land 111      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,608      
Total 1,719      
Accumulated Depreciation $ 117      
Date of Construction 1987      
Date Acquired 2015      
Retail Properties | 520 East Main Street, Henderson | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 520 East Main Street, Henderson | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 145 Hughes Road, Road Madison | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 209      
Initial Costs to Company, Buildings and Improvements 1,958      
Gross Amount at Which Carried at Close of Period, Land 209      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,958      
Total 2,167      
Accumulated Depreciation $ 129      
Date of Construction 2011      
Date Acquired 2015      
Retail Properties | 145 Hughes Road, Road Madison | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 145 Hughes Road, Road Madison | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2119 North Locust Avenue, Lawrenceburg | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 117      
Initial Costs to Company, Buildings and Improvements 1,832      
Gross Amount at Which Carried at Close of Period, Land 117      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,832      
Total 1,949      
Accumulated Depreciation $ 146      
Date of Construction 2014      
Date Acquired 2015      
Retail Properties | 2119 North Locust Avenue, Lawrenceburg | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2119 North Locust Avenue, Lawrenceburg | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1032 North Main Street, Montevallo | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 60      
Initial Costs to Company, Buildings and Improvements 2,203      
Gross Amount at Which Carried at Close of Period, Land 60      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,203      
Total 2,263      
Accumulated Depreciation $ 138      
Date of Construction 2009      
Date Acquired 2015      
Retail Properties | 1032 North Main Street, Montevallo | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1032 North Main Street, Montevallo | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3211 Woodward Avenue, Muscle Shoals | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 44      
Initial Costs to Company, Buildings and Improvements 2,019      
Gross Amount at Which Carried at Close of Period, Land 44      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,019      
Total 2,063      
Accumulated Depreciation $ 117      
Date of Construction 1984      
Date Acquired 2015      
Retail Properties | 3211 Woodward Avenue, Muscle Shoals | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3211 Woodward Avenue, Muscle Shoals | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 14045 US Hwy 411, Odenville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 100      
Initial Costs to Company, Buildings and Improvements 1,652      
Gross Amount at Which Carried at Close of Period, Land 100      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,652      
Total 1,752      
Accumulated Depreciation $ 115      
Date of Construction 2000      
Date Acquired 2015      
Retail Properties | 14045 US Hwy 411, Odenville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 14045 US Hwy 411, Odenville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 201 Hwy 278 Bypass East, Piedmont | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 33      
Initial Costs to Company, Buildings and Improvements 1,934      
Gross Amount at Which Carried at Close of Period, Land 33      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,934      
Total 1,967      
Accumulated Depreciation $ 116      
Date of Construction 1981      
Date Acquired 2015      
Retail Properties | 201 Hwy 278 Bypass East, Piedmont | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 201 Hwy 278 Bypass East, Piedmont | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 503 1st Avenue East, Reform | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 201      
Initial Costs to Company, Buildings and Improvements 1,979      
Gross Amount at Which Carried at Close of Period, Land 201      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,979      
Total 2,180      
Accumulated Depreciation $ 139      
Date of Construction 1992      
Date Acquired 2015      
Retail Properties | 503 1st Avenue East, Reform | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 503 1st Avenue East, Reform | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4170 Hwy 431, Roanoke | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 83      
Initial Costs to Company, Buildings and Improvements 1,625      
Gross Amount at Which Carried at Close of Period, Land 83      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,625      
Total 1,708      
Accumulated Depreciation $ 101      
Date of Construction 2006      
Date Acquired 2015      
Retail Properties | 4170 Hwy 431, Roanoke | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4170 Hwy 431, Roanoke | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 700 Wayne Road, Savannah | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 62      
Initial Costs to Company, Buildings and Improvements 1,693      
Gross Amount at Which Carried at Close of Period, Land 62      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,693      
Total 1,755      
Accumulated Depreciation $ 112      
Date of Construction 2012      
Date Acquired 2015      
Retail Properties | 700 Wayne Road, Savannah | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 700 Wayne Road, Savannah | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1105 Montgomery Avenue, Sheffield | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 43      
Initial Costs to Company, Buildings and Improvements 1,730      
Gross Amount at Which Carried at Close of Period, Land 43      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,730      
Total 1,773      
Accumulated Depreciation $ 102      
Date of Construction 1967      
Date Acquired 2015      
Retail Properties | 1105 Montgomery Avenue, Sheffield | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1105 Montgomery Avenue, Sheffield | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5271 Hwy 67 South, Somerville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 28      
Initial Costs to Company, Buildings and Improvements 1,758      
Gross Amount at Which Carried at Close of Period, Land 28      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,758      
Total 1,786      
Accumulated Depreciation $ 124      
Date of Construction 2001      
Date Acquired 2015      
Retail Properties | 5271 Hwy 67 South, Somerville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5271 Hwy 67 South, Somerville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 444 Marietta Road, Springville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 31      
Initial Costs to Company, Buildings and Improvements 1,994      
Gross Amount at Which Carried at Close of Period, Land 31      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,994      
Total 2,025      
Accumulated Depreciation $ 120      
Date of Construction 1993      
Date Acquired 2015      
Retail Properties | 444 Marietta Road, Springville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 444 Marietta Road, Springville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 43023 US Hwy 72, Stevenson | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 306      
Initial Costs to Company, Buildings and Improvements 1,862      
Gross Amount at Which Carried at Close of Period, Land 306      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,862      
Total 2,168      
Accumulated Depreciation $ 115      
Date of Construction 1985      
Date Acquired 2015      
Retail Properties | 43023 US Hwy 72, Stevenson | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 43023 US Hwy 72, Stevenson | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1460 Gadsden Hwy, Trussville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 34      
Initial Costs to Company, Buildings and Improvements 2,039      
Gross Amount at Which Carried at Close of Period, Land 34      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,039      
Total 2,073      
Accumulated Depreciation $ 121      
Date of Construction 1992      
Date Acquired 2015      
Retail Properties | 1460 Gadsden Hwy, Trussville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1460 Gadsden Hwy, Trussville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 485 Hwy 72 West, Tuscumbia | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 117      
Initial Costs to Company, Buildings and Improvements 1,831      
Gross Amount at Which Carried at Close of Period, Land 117      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,831      
Total 1,948      
Accumulated Depreciation $ 122      
Date of Construction 2004      
Date Acquired 2015      
Retail Properties | 485 Hwy 72 West, Tuscumbia | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 485 Hwy 72 West, Tuscumbia | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 32 Village Lane, Wedowee | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 92      
Initial Costs to Company, Buildings and Improvements 1,454      
Gross Amount at Which Carried at Close of Period, Land 92      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,454      
Total 1,546      
Accumulated Depreciation $ 88      
Date of Construction 2002      
Date Acquired 2015      
Retail Properties | 32 Village Lane, Wedowee | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 32 Village Lane, Wedowee | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1421 Winchester Road NE, Huntsville | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 133      
Initial Costs to Company, Buildings and Improvements 2,029      
Gross Amount at Which Carried at Close of Period, Land 133      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,029      
Total 2,162      
Accumulated Depreciation $ 125      
Date of Construction 2010      
Date Acquired 2015      
Retail Properties | 1421 Winchester Road NE, Huntsville | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1421 Winchester Road NE, Huntsville | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 900 Hansen Road, Ashwaubenon | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 86      
Initial Costs to Company, Buildings and Improvements 2,008      
Gross Amount at Which Carried at Close of Period, Land 86      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,008      
Total 2,094      
Accumulated Depreciation $ 127      
Date of Construction 1994      
Date Acquired 2015      
Retail Properties | 900 Hansen Road, Ashwaubenon | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 900 Hansen Road, Ashwaubenon | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1700 S. Koeller St., Oshkosh | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 145      
Initial Costs to Company, Buildings and Improvements 1,795      
Gross Amount at Which Carried at Close of Period, Land 145      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,795      
Total 1,940      
Accumulated Depreciation $ 119      
Date of Construction 1996      
Date Acquired 2015      
Retail Properties | 1700 S. Koeller St., Oshkosh | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1700 S. Koeller St., Oshkosh | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2420 E. Mason St., Green Bay | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 106      
Initial Costs to Company, Buildings and Improvements 1,713      
Gross Amount at Which Carried at Close of Period, Land 106      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,713      
Total 1,819      
Accumulated Depreciation $ 112      
Date of Construction 1996      
Date Acquired 2015      
Retail Properties | 2420 E. Mason St., Green Bay | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2420 E. Mason St., Green Bay | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2510 W. Washington St., West Bend | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 113      
Initial Costs to Company, Buildings and Improvements 1,704      
Gross Amount at Which Carried at Close of Period, Land 113      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,704      
Total 1,817      
Accumulated Depreciation $ 111      
Date of Construction 1996      
Date Acquired 2015      
Retail Properties | 2510 W. Washington St., West Bend | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2510 W. Washington St., West Bend | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3040 E. College Ave., Appleton | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 96      
Initial Costs to Company, Buildings and Improvements 1,637      
Gross Amount at Which Carried at Close of Period, Land 96      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,637      
Total 1,733      
Accumulated Depreciation $ 107      
Date of Construction 1996      
Date Acquired 2015      
Retail Properties | 3040 E. College Ave., Appleton | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3040 E. College Ave., Appleton | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3730 W. College Ave., Appleton | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 95      
Initial Costs to Company, Buildings and Improvements 2,478      
Gross Amount at Which Carried at Close of Period, Land 95      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,478      
Total 2,573      
Accumulated Depreciation $ 153      
Date of Construction 1976      
Date Acquired 2015      
Retail Properties | 3730 W. College Ave., Appleton | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3730 W. College Ave., Appleton | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4435 Calumet Ave., Manitowoc | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 106      
Initial Costs to Company, Buildings and Improvements 1,714      
Gross Amount at Which Carried at Close of Period, Land 106      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,714      
Total 1,820      
Accumulated Depreciation $ 113      
Date of Construction 1996      
Date Acquired 2015      
Retail Properties | 4435 Calumet Ave., Manitowoc | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4435 Calumet Ave., Manitowoc | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4745 Golf Road, Eau Clarie | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 137      
Initial Costs to Company, Buildings and Improvements 2,245      
Gross Amount at Which Carried at Close of Period, Land 137      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,245      
Total 2,382      
Accumulated Depreciation $ 149      
Date of Construction 1994      
Date Acquired 2015      
Retail Properties | 4745 Golf Road, Eau Clarie | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4745 Golf Road, Eau Clarie | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 271 N Dupont Highway, Dover | DE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 211      
Initial Costs to Company, Buildings and Improvements 3,455      
Gross Amount at Which Carried at Close of Period, Land 211      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,455      
Total 3,666      
Accumulated Depreciation $ 208      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 271 N Dupont Highway, Dover | DE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 271 N Dupont Highway, Dover | DE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 302 N Interstate Drive, Norman | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 232      
Initial Costs to Company, Buildings and Improvements 3,733      
Gross Amount at Which Carried at Close of Period, Land 232      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,733      
Total 3,965      
Accumulated Depreciation $ 227      
Date of Construction 1982      
Date Acquired 2015      
Retail Properties | 302 N Interstate Drive, Norman | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 302 N Interstate Drive, Norman | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 305 Merchants Rd, Knoxville | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 151      
Initial Costs to Company, Buildings and Improvements 2,775      
Gross Amount at Which Carried at Close of Period, Land 151      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,775      
Total 2,926      
Accumulated Depreciation $ 182      
Date of Construction 1978      
Date Acquired 2015      
Retail Properties | 305 Merchants Rd, Knoxville | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 305 Merchants Rd, Knoxville | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 555 South West Street, Wichita | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 468      
Initial Costs to Company, Buildings and Improvements 3,475      
Gross Amount at Which Carried at Close of Period, Land 468      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,475      
Total 3,943      
Accumulated Depreciation $ 212      
Date of Construction 1982      
Date Acquired 2015      
Retail Properties | 555 South West Street, Wichita | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 555 South West Street, Wichita | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 575 S Telshor Blvd, Las Cruces | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 108      
Initial Costs to Company, Buildings and Improvements 4,069      
Gross Amount at Which Carried at Close of Period, Land 108      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,069      
Total 4,177      
Accumulated Depreciation $ 251      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 575 S Telshor Blvd, Las Cruces | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 575 S Telshor Blvd, Las Cruces | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1725 Rainbow Dr., Gadsden | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 219      
Initial Costs to Company, Buildings and Improvements 2,915      
Gross Amount at Which Carried at Close of Period, Land 219      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,915      
Total 3,134      
Accumulated Depreciation $ 181      
Date of Construction 1981      
Date Acquired 2015      
Retail Properties | 1725 Rainbow Dr., Gadsden | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1725 Rainbow Dr., Gadsden | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2077 Riverside Drive, Macon | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 258      
Initial Costs to Company, Buildings and Improvements 3,235      
Gross Amount at Which Carried at Close of Period, Land 258      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,235      
Total 3,493      
Accumulated Depreciation $ 195      
Date of Construction 1972      
Date Acquired 2015      
Retail Properties | 2077 Riverside Drive, Macon | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2077 Riverside Drive, Macon | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4455 Wadsworth Blvd, Wheat Ridge | CO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 451      
Initial Costs to Company, Buildings and Improvements 3,614      
Gross Amount at Which Carried at Close of Period, Land 451      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,614      
Total 4,065      
Accumulated Depreciation $ 216      
Date of Construction 1974      
Date Acquired 2015      
Retail Properties | 4455 Wadsworth Blvd, Wheat Ridge | CO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4455 Wadsworth Blvd, Wheat Ridge | CO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6728 S Memorial Drive, Tulsa | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 125      
Initial Costs to Company, Buildings and Improvements 3,846      
Gross Amount at Which Carried at Close of Period, Land 125      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,846      
Total 3,971      
Accumulated Depreciation $ 230      
Date of Construction 1987      
Date Acquired 2015      
Retail Properties | 6728 S Memorial Drive, Tulsa | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6728 S Memorial Drive, Tulsa | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 8350 3rd Street North, Oakdale | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 197      
Initial Costs to Company, Buildings and Improvements 3,455      
Gross Amount at Which Carried at Close of Period, Land 197      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,455      
Total 3,652      
Accumulated Depreciation $ 206      
Date of Construction 2006      
Date Acquired 2015      
Retail Properties | 8350 3rd Street North, Oakdale | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 8350 3rd Street North, Oakdale | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9415 Pineville-Matthews Rd, Pineville | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 74      
Initial Costs to Company, Buildings and Improvements 3,587      
Gross Amount at Which Carried at Close of Period, Land 74      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,587      
Total 3,661      
Accumulated Depreciation $ 221      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 9415 Pineville-Matthews Rd, Pineville | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9415 Pineville-Matthews Rd, Pineville | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 10520 Coors By-Pass NW, Albuquerque | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 196      
Initial Costs to Company, Buildings and Improvements 3,389      
Gross Amount at Which Carried at Close of Period, Land 196      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,389      
Total 3,585      
Accumulated Depreciation $ 211      
Date of Construction 2002      
Date Acquired 2015      
Retail Properties | 10520 Coors By-Pass NW, Albuquerque | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 10520 Coors By-Pass NW, Albuquerque | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 12515 Elm Creek Blvd.,N., Maple Grove | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 243      
Initial Costs to Company, Buildings and Improvements 3,253      
Gross Amount at Which Carried at Close of Period, Land 243      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,253      
Total 3,496      
Accumulated Depreciation $ 201      
Date of Construction 2001      
Date Acquired 2015      
Retail Properties | 12515 Elm Creek Blvd.,N., Maple Grove | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 12515 Elm Creek Blvd.,N., Maple Grove | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 670 NW Blue Parkway, Lee's Summit | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 132      
Initial Costs to Company, Buildings and Improvements 3,447      
Gross Amount at Which Carried at Close of Period, Land 132      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,447      
Total 3,579      
Accumulated Depreciation $ 220      
Date of Construction 2010      
Date Acquired 2015      
Retail Properties | 670 NW Blue Parkway, Lee's Summit | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 670 NW Blue Parkway, Lee's Summit | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1745 Old Fort Parkway, Murfreesboro | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 247      
Initial Costs to Company, Buildings and Improvements 2,747      
Gross Amount at Which Carried at Close of Period, Land 247      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,747      
Total 2,994      
Accumulated Depreciation $ 181      
Date of Construction 1987      
Date Acquired 2015      
Retail Properties | 1745 Old Fort Parkway, Murfreesboro | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1745 Old Fort Parkway, Murfreesboro | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2550 Nicholasville Road, Lexington | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,258      
Gross Amount at Which Carried at Close of Period, Land 1,258      
Total $ 1,258      
Date of Construction 1976      
Date Acquired 2015      
Retail Properties | 2950 Plainfield Road, Joliet | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 686      
Initial Costs to Company, Buildings and Improvements 3,072      
Gross Amount at Which Carried at Close of Period, Land 686      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,072      
Total 3,758      
Accumulated Depreciation $ 202      
Date of Construction 1991      
Date Acquired 2015      
Retail Properties | 2950 Plainfield Road, Joliet | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2950 Plainfield Road, Joliet | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1814 Gallatin Pike N., Madison | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 97      
Initial Costs to Company, Buildings and Improvements 4,617      
Gross Amount at Which Carried at Close of Period, Land 97      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,617      
Total 4,714      
Accumulated Depreciation $ 211      
Date of Construction 1972      
Date Acquired 2016      
Retail Properties | 1814 Gallatin Pike N., Madison | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1814 Gallatin Pike N., Madison | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7921 Dream St., Florence | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 61      
Initial Costs to Company, Buildings and Improvements 4,687      
Gross Amount at Which Carried at Close of Period, Land 61      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,687      
Total 4,748      
Accumulated Depreciation $ 216      
Date of Construction 1977      
Date Acquired 2016      
Retail Properties | 7921 Dream St., Florence | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7921 Dream St., Florence | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2925 White Bear Ave., Maplewood | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 315      
Initial Costs to Company, Buildings and Improvements 1,551      
Gross Amount at Which Carried at Close of Period, Land 315      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,551      
Total 1,866      
Accumulated Depreciation $ 95      
Date of Construction 1983      
Date Acquired 2016      
Retail Properties | 2925 White Bear Ave., Maplewood | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2925 White Bear Ave., Maplewood | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4450 Rodeo Road, Santa Fe | NM        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 121      
Initial Costs to Company, Buildings and Improvements 2,979      
Gross Amount at Which Carried at Close of Period, Land 121      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,979      
Total 3,100      
Accumulated Depreciation $ 136      
Date of Construction 1990      
Date Acquired 2016      
Retail Properties | 4450 Rodeo Road, Santa Fe | NM | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4450 Rodeo Road, Santa Fe | NM | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7750 Winchester Road, Memphis | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 103      
Initial Costs to Company, Buildings and Improvements 3,327      
Gross Amount at Which Carried at Close of Period, Land 103      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,327      
Total 3,430      
Accumulated Depreciation $ 161      
Date of Construction 2008      
Date Acquired 2016      
Retail Properties | 7750 Winchester Road, Memphis | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7750 Winchester Road, Memphis | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2642 Stadium Blvd., Jonesboro | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 324      
Initial Costs to Company, Buildings and Improvements 3,383      
Gross Amount at Which Carried at Close of Period, Land 324      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,383      
Total 3,707      
Accumulated Depreciation $ 161      
Date of Construction 2011      
Date Acquired 2016      
Retail Properties | 2642 Stadium Blvd., Jonesboro | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2642 Stadium Blvd., Jonesboro | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 120 Creasy Lane S., Lafayette | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 285      
Initial Costs to Company, Buildings and Improvements 3,436      
Gross Amount at Which Carried at Close of Period, Land 285      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,436      
Total 3,721      
Accumulated Depreciation $ 163      
Date of Construction 2012      
Date Acquired 2016      
Retail Properties | 120 Creasy Lane S., Lafayette | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 120 Creasy Lane S., Lafayette | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 45 Betten Court, Bridgeport | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 88      
Initial Costs to Company, Buildings and Improvements 4,074      
Gross Amount at Which Carried at Close of Period, Land 88      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,074      
Total 4,162      
Accumulated Depreciation $ 218      
Date of Construction 2007      
Date Acquired 2016      
Retail Properties | 45 Betten Court, Bridgeport | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 45 Betten Court, Bridgeport | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 442 Fortman Drive, St. Mary's | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 56      
Initial Costs to Company, Buildings and Improvements 3,997      
Gross Amount at Which Carried at Close of Period, Land 56      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,997      
Total 4,053      
Accumulated Depreciation $ 218      
Date of Construction 2011      
Date Acquired 2016      
Retail Properties | 442 Fortman Drive, St. Mary's | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 442 Fortman Drive, St. Mary's | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2948 Allentown Road, Lima | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 69      
Initial Costs to Company, Buildings and Improvements 3,813      
Gross Amount at Which Carried at Close of Period, Land 69      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,813      
Total 3,882      
Accumulated Depreciation $ 207      
Date of Construction 2009      
Date Acquired 2016      
Retail Properties | 2948 Allentown Road, Lima | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2948 Allentown Road, Lima | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 45131 Columbia Place, Sterling | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Encumbrance $ 18,622      
Initial Costs to Company, Land 24,395      
Gross Amount at Which Carried at Close of Period, Land 24,395      
Total $ 24,395      
Date of Construction 2004      
Date Acquired 2016      
Retail Properties | 2400 North Interstate 35, Round Rock | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 769      
Initial Costs to Company, Buildings and Improvements 4,176      
Gross Amount at Which Carried at Close of Period, Land 769      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,176      
Total 4,945      
Accumulated Depreciation $ 188      
Date of Construction 1984      
Date Acquired 2016      
Retail Properties | 2400 North Interstate 35, Round Rock | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2400 North Interstate 35, Round Rock | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2451 S. Capital of Texas Highway, austin | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,184      
Initial Costs to Company, Buildings and Improvements 5,678      
Gross Amount at Which Carried at Close of Period, Land 1,184      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,678      
Total 6,862      
Accumulated Depreciation $ 259      
Date of Construction 1998      
Date Acquired 2016      
Retail Properties | 2451 S. Capital of Texas Highway, austin | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2451 S. Capital of Texas Highway, austin | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7709 Ranch Road 620 N, Austin | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 2,104      
Initial Costs to Company, Buildings and Improvements 7,566      
Gross Amount at Which Carried at Close of Period, Land 2,104      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,566      
Total 9,670      
Accumulated Depreciation $ 362      
Date of Construction 2006      
Date Acquired 2016      
Retail Properties | 7709 Ranch Road 620 N, Austin | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7709 Ranch Road 620 N, Austin | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 11570 Research Boulevard, Austin | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 4,190      
Initial Costs to Company, Buildings and Improvements 7,829      
Gross Amount at Which Carried at Close of Period, Land 4,190      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,829      
Total 12,019      
Accumulated Depreciation $ 358      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 11570 Research Boulevard, Austin | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 11570 Research Boulevard, Austin | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1724 W. Everly Brothers Blvd., Central City | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 315      
Initial Costs to Company, Buildings and Improvements 580      
Gross Amount at Which Carried at Close of Period, Land 315      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 580      
Total 895      
Accumulated Depreciation $ 31      
Date of Construction 1978      
Date Acquired 2016      
Retail Properties | 1724 W. Everly Brothers Blvd., Central City | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1724 W. Everly Brothers Blvd., Central City | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 814 Frederica Street, Owensboro | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 177      
Initial Costs to Company, Buildings and Improvements 615      
Gross Amount at Which Carried at Close of Period, Land 177      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 615      
Total 792      
Accumulated Depreciation $ 28      
Date of Construction 1972      
Date Acquired 2016      
Retail Properties | 814 Frederica Street, Owensboro | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 814 Frederica Street, Owensboro | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 8000 State Road 66, Newburgh | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 330      
Gross Amount at Which Carried at Close of Period, Land 330      
Total $ 330      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 2015 E Malone Avenue, Sikeston | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 205      
Initial Costs to Company, Buildings and Improvements 2,235      
Gross Amount at Which Carried at Close of Period, Land 205      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,235      
Total 2,440      
Accumulated Depreciation $ 106      
Date of Construction 1940      
Date Acquired 2016      
Retail Properties | 2015 E Malone Avenue, Sikeston | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2015 E Malone Avenue, Sikeston | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1000-1108 N Fares Ave., Evansville | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 636      
Initial Costs to Company, Buildings and Improvements 3,655      
Gross Amount at Which Carried at Close of Period, Land 636      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,655      
Total 4,291      
Accumulated Depreciation $ 164      
Date of Construction 1949      
Date Acquired 2016      
Retail Properties | 1000-1108 N Fares Ave., Evansville | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1000-1108 N Fares Ave., Evansville | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 400-500 NW Fourth Street, Evansville | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 244      
Initial Costs to Company, Buildings and Improvements 2,375      
Gross Amount at Which Carried at Close of Period, Land 244      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,375      
Total 2,619      
Accumulated Depreciation $ 104      
Date of Construction 1909      
Date Acquired 2016      
Retail Properties | 400-500 NW Fourth Street, Evansville | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 400-500 NW Fourth Street, Evansville | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1200 Dufour Street, Marion | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 314      
Initial Costs to Company, Buildings and Improvements 2,089      
Gross Amount at Which Carried at Close of Period, Land 314      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,089      
Total 2,403      
Accumulated Depreciation $ 94      
Date of Construction 1970      
Date Acquired 2016      
Retail Properties | 1200 Dufour Street, Marion | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1200 Dufour Street, Marion | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 802 First Street, Kennett | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 191      
Initial Costs to Company, Buildings and Improvements 1,198      
Gross Amount at Which Carried at Close of Period, Land 191      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,198      
Total 1,389      
Accumulated Depreciation $ 55      
Date of Construction 1970      
Date Acquired 2016      
Retail Properties | 802 First Street, Kennett | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 802 First Street, Kennett | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2810 Westwood Blvd, Poplar Bluff | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 149      
Initial Costs to Company, Buildings and Improvements 1,794      
Gross Amount at Which Carried at Close of Period, Land 149      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,794      
Total 1,943      
Accumulated Depreciation $ 86      
Date of Construction 1970      
Date Acquired 2016      
Retail Properties | 2810 Westwood Blvd, Poplar Bluff | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2810 Westwood Blvd, Poplar Bluff | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2000 Independence Street, Cape Girardeau | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 76      
Initial Costs to Company, Buildings and Improvements 542      
Gross Amount at Which Carried at Close of Period, Land 76      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 542      
Total 618      
Accumulated Depreciation $ 28      
Date of Construction 1988      
Date Acquired 2016      
Retail Properties | 2000 Independence Street, Cape Girardeau | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2000 Independence Street, Cape Girardeau | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3480 Nash Road, Scott City | MO        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 260      
Initial Costs to Company, Buildings and Improvements 3,052      
Gross Amount at Which Carried at Close of Period, Land 260      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,052      
Total 3,312      
Accumulated Depreciation $ 139      
Date of Construction 1978      
Date Acquired 2016      
Retail Properties | 3480 Nash Road, Scott City | MO | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3480 Nash Road, Scott City | MO | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1400 Green Street, Henderson | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 290      
Initial Costs to Company, Buildings and Improvements 729      
Gross Amount at Which Carried at Close of Period, Land 290      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 729      
Total 1,019      
Accumulated Depreciation $ 38      
Date of Construction 1973      
Date Acquired 2016      
Retail Properties | 1400 Green Street, Henderson | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1400 Green Street, Henderson | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1400 S. Division Street, Blytheville | AR        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 413      
Initial Costs to Company, Buildings and Improvements 3,405      
Gross Amount at Which Carried at Close of Period, Land 413      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,405      
Total 3,818      
Accumulated Depreciation $ 166      
Date of Construction 1966      
Date Acquired 2016      
Retail Properties | 1400 S. Division Street, Blytheville | AR | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1400 S. Division Street, Blytheville | AR | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 600 N Jackson Street, Harrisburg | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 131      
Initial Costs to Company, Buildings and Improvements 839      
Gross Amount at Which Carried at Close of Period, Land 131      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 839      
Total 970      
Accumulated Depreciation $ 37      
Date of Construction 1970      
Date Acquired 2016      
Retail Properties | 600 N Jackson Street, Harrisburg | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 600 N Jackson Street, Harrisburg | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4121 Highway 31 East, Clarksville | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,091      
Initial Costs to Company, Buildings and Improvements 3,890      
Gross Amount at Which Carried at Close of Period, Land 1,091      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,890      
Total 4,981      
Accumulated Depreciation $ 192      
Date of Construction 1961      
Date Acquired 2016      
Retail Properties | 4121 Highway 31 East, Clarksville | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4121 Highway 31 East, Clarksville | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1230 Alsop Lane, Owensboro | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 499      
Initial Costs to Company, Buildings and Improvements 734      
Gross Amount at Which Carried at Close of Period, Land 499      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 734      
Total 1,233      
Accumulated Depreciation $ 36      
Date of Construction 1976      
Date Acquired 2016      
Retail Properties | 1230 Alsop Lane, Owensboro | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1230 Alsop Lane, Owensboro | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5911 Pearl Court, Evansville | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 203      
Initial Costs to Company, Buildings and Improvements 369      
Gross Amount at Which Carried at Close of Period, Land 203      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 369      
Total 572      
Accumulated Depreciation $ 26      
Date of Construction 2001      
Date Acquired 2016      
Retail Properties | 5911 Pearl Court, Evansville | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5911 Pearl Court, Evansville | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 12624 S Northgate Drive, Haubstadt | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 379      
Initial Costs to Company, Buildings and Improvements 1,349      
Gross Amount at Which Carried at Close of Period, Land 379      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,349      
Total 1,728      
Accumulated Depreciation $ 73      
Date of Construction 2005      
Date Acquired 2016      
Retail Properties | 12624 S Northgate Drive, Haubstadt | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 12624 S Northgate Drive, Haubstadt | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7695 S 1150 E, Otterbein | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 177      
Initial Costs to Company, Buildings and Improvements 1,385      
Gross Amount at Which Carried at Close of Period, Land 177      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,385      
Total 1,562      
Accumulated Depreciation $ 79      
Date of Construction 1978      
Date Acquired 2016      
Retail Properties | 7695 S 1150 E, Otterbein | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7695 S 1150 E, Otterbein | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2925 Ross Clark Cr., Dothan | AL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 539      
Initial Costs to Company, Buildings and Improvements 2,551      
Gross Amount at Which Carried at Close of Period, Land 539      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,551      
Total 3,090      
Accumulated Depreciation $ 102      
Date of Construction 1997      
Date Acquired 2016      
Retail Properties | 2925 Ross Clark Cr., Dothan | AL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2925 Ross Clark Cr., Dothan | AL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1820 Raymond Diehl Rd., Tallahassee | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 864      
Initial Costs to Company, Buildings and Improvements 2,184      
Gross Amount at Which Carried at Close of Period, Land 864      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,184      
Total 3,048      
Accumulated Depreciation $ 93      
Date of Construction 1995      
Date Acquired 2016      
Retail Properties | 1820 Raymond Diehl Rd., Tallahassee | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1820 Raymond Diehl Rd., Tallahassee | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 995 N. Peachtree Parkway, Peachtree City | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 476      
Initial Costs to Company, Buildings and Improvements 2,590      
Gross Amount at Which Carried at Close of Period, Land 476      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,590      
Total 3,066      
Accumulated Depreciation $ 107      
Date of Construction 1997      
Date Acquired 2016      
Retail Properties | 995 N. Peachtree Parkway, Peachtree City | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 995 N. Peachtree Parkway, Peachtree City | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1824 Club House Drive, Valdosta | GA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 524      
Initial Costs to Company, Buildings and Improvements 2,504      
Gross Amount at Which Carried at Close of Period, Land 524      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,504      
Total 3,028      
Accumulated Depreciation $ 104      
Date of Construction 1997      
Date Acquired 2016      
Retail Properties | 1824 Club House Drive, Valdosta | GA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1824 Club House Drive, Valdosta | GA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 15608 S Harlem Avenue, Orland Park | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 686      
Initial Costs to Company, Buildings and Improvements 2,358      
Gross Amount at Which Carried at Close of Period, Land 686      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,358      
Total 3,044      
Accumulated Depreciation $ 102      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 15608 S Harlem Avenue, Orland Park | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 15608 S Harlem Avenue, Orland Park | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6007 E. State Street, Rockford | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 450      
Initial Costs to Company, Buildings and Improvements 2,701      
Gross Amount at Which Carried at Close of Period, Land 450      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,701      
Total 3,151      
Accumulated Depreciation $ 109      
Date of Construction 1996      
Date Acquired 2016      
Retail Properties | 6007 E. State Street, Rockford | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6007 E. State Street, Rockford | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3201 W 3rd St., Bloomington | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 240      
Initial Costs to Company, Buildings and Improvements 2,761      
Gross Amount at Which Carried at Close of Period, Land 240      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,761      
Total 3,001      
Accumulated Depreciation $ 103      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 3201 W 3rd St., Bloomington | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3201 W 3rd St., Bloomington | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3730 S. Reed Rd., Kokomo | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 106      
Initial Costs to Company, Buildings and Improvements 3,065      
Gross Amount at Which Carried at Close of Period, Land 106      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,065      
Total 3,171      
Accumulated Depreciation $ 110      
Date of Construction 1995      
Date Acquired 2016      
Retail Properties | 3730 S. Reed Rd., Kokomo | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3730 S. Reed Rd., Kokomo | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6435 Dixie Hwy., Clarkston | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 284      
Initial Costs to Company, Buildings and Improvements 2,788      
Gross Amount at Which Carried at Close of Period, Land 284      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,788      
Total 3,072      
Accumulated Depreciation $ 123      
Date of Construction 1997      
Date Acquired 2016      
Retail Properties | 6435 Dixie Hwy., Clarkston | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6435 Dixie Hwy., Clarkston | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1515 W. 14 Mile Rd., Madison Heights | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 58      
Initial Costs to Company, Buildings and Improvements 3,094      
Gross Amount at Which Carried at Close of Period, Land 58      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,094      
Total 3,152      
Accumulated Depreciation $ 110      
Date of Construction 1995      
Date Acquired 2016      
Retail Properties | 1515 W. 14 Mile Rd., Madison Heights | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1515 W. 14 Mile Rd., Madison Heights | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7873 Conference Ctr Dr., Brighton | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 102      
Initial Costs to Company, Buildings and Improvements 2,920      
Gross Amount at Which Carried at Close of Period, Land 102      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,920      
Total 3,022      
Accumulated Depreciation $ 121      
Date of Construction 1998      
Date Acquired 2016      
Retail Properties | 7873 Conference Ctr Dr., Brighton | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7873 Conference Ctr Dr., Brighton | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1501 Boardman Road, Jackson | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 177      
Initial Costs to Company, Buildings and Improvements 2,846      
Gross Amount at Which Carried at Close of Period, Land 177      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,846      
Total 3,023      
Accumulated Depreciation $ 115      
Date of Construction 1996      
Date Acquired 2016      
Retail Properties | 1501 Boardman Road, Jackson | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1501 Boardman Road, Jackson | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 250 Mitchelle Drive, Hendersonville | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 165      
Initial Costs to Company, Buildings and Improvements 2,928      
Gross Amount at Which Carried at Close of Period, Land 165      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,928      
Total 3,093      
Accumulated Depreciation $ 125      
Date of Construction 2000      
Date Acquired 2016      
Retail Properties | 250 Mitchelle Drive, Hendersonville | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 250 Mitchelle Drive, Hendersonville | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 111 Howell Road, New Bern | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 284      
Initial Costs to Company, Buildings and Improvements 2,525      
Gross Amount at Which Carried at Close of Period, Land 284      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,525      
Total 2,809      
Accumulated Depreciation $ 103      
Date of Construction 2000      
Date Acquired 2016      
Retail Properties | 111 Howell Road, New Bern | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 111 Howell Road, New Bern | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2625 West Craig Rd., Las Vegas | NV        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 962      
Initial Costs to Company, Buildings and Improvements 2,086      
Gross Amount at Which Carried at Close of Period, Land 962      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,086      
Total 3,048      
Accumulated Depreciation $ 96      
Date of Construction 2002      
Date Acquired 2016      
Retail Properties | 2625 West Craig Rd., Las Vegas | NV | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2625 West Craig Rd., Las Vegas | NV | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 230 Lake Drive East, Cherry Hill | NJ        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 791      
Initial Costs to Company, Buildings and Improvements 2,340      
Gross Amount at Which Carried at Close of Period, Land 791      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,340      
Total 3,131      
Accumulated Depreciation $ 101      
Date of Construction 1992      
Date Acquired 2016      
Retail Properties | 230 Lake Drive East, Cherry Hill | NJ | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 230 Lake Drive East, Cherry Hill | NJ | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3527 N. Union Deposit Road, Harrisburg | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 735      
Initial Costs to Company, Buildings and Improvements 2,340      
Gross Amount at Which Carried at Close of Period, Land 735      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,340      
Total 3,075      
Accumulated Depreciation $ 97      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 3527 N. Union Deposit Road, Harrisburg | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3527 N. Union Deposit Road, Harrisburg | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9395 McKnight Road, Pittsburgh | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 363      
Initial Costs to Company, Buildings and Improvements 3,488      
Gross Amount at Which Carried at Close of Period, Land 363      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,488      
Total 3,851      
Accumulated Depreciation $ 139      
Date of Construction 1996      
Date Acquired 2016      
Retail Properties | 9395 McKnight Road, Pittsburgh | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9395 McKnight Road, Pittsburgh | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1550 I-10 South, Beaumont | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 206      
Initial Costs to Company, Buildings and Improvements 3,241      
Gross Amount at Which Carried at Close of Period, Land 206      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,241      
Total 3,447      
Accumulated Depreciation $ 128      
Date of Construction 1996      
Date Acquired 2016      
Retail Properties | 1550 I-10 South, Beaumont | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1550 I-10 South, Beaumont | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1101 N. Beckley Ave., Desoto | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 535      
Initial Costs to Company, Buildings and Improvements 2,542      
Gross Amount at Which Carried at Close of Period, Land 535      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,542      
Total 3,077      
Accumulated Depreciation $ 108      
Date of Construction 1999      
Date Acquired 2016      
Retail Properties | 1101 N. Beckley Ave., Desoto | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1101 N. Beckley Ave., Desoto | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2211 S. Stemmons Frwy., Lewisville | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 299      
Initial Costs to Company, Buildings and Improvements 2,786      
Gross Amount at Which Carried at Close of Period, Land 299      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,786      
Total 3,085      
Accumulated Depreciation $ 105      
Date of Construction 1994      
Date Acquired 2016      
Retail Properties | 2211 S. Stemmons Frwy., Lewisville | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2211 S. Stemmons Frwy., Lewisville | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 502 West Bay Area Blvd., Webster | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 591      
Initial Costs to Company, Buildings and Improvements 2,622      
Gross Amount at Which Carried at Close of Period, Land 591      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,622      
Total 3,213      
Accumulated Depreciation $ 109      
Date of Construction 1995      
Date Acquired 2016      
Retail Properties | 502 West Bay Area Blvd., Webster | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 502 West Bay Area Blvd., Webster | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 261 University Boulevard, Harrisonburg | VA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 444      
Initial Costs to Company, Buildings and Improvements 2,645      
Gross Amount at Which Carried at Close of Period, Land 444      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,645      
Total 3,089      
Accumulated Depreciation $ 113      
Date of Construction 1998      
Date Acquired 2016      
Retail Properties | 261 University Boulevard, Harrisonburg | VA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 261 University Boulevard, Harrisonburg | VA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 111 Hylton Lane, Beckley | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 194      
Initial Costs to Company, Buildings and Improvements 3,049      
Gross Amount at Which Carried at Close of Period, Land 194      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,049      
Total 3,243      
Accumulated Depreciation $ 119      
Date of Construction 1997      
Date Acquired 2016      
Retail Properties | 111 Hylton Lane, Beckley | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 111 Hylton Lane, Beckley | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1501 E. Washington Road, Ithaca | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 739      
Initial Costs to Company, Buildings and Improvements 2,669      
Gross Amount at Which Carried at Close of Period, Land 739      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,669      
Total 3,408      
Accumulated Depreciation $ 106      
Date of Construction 2015      
Date Acquired 2016      
Retail Properties | 1501 E. Washington Road, Ithaca | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1501 E. Washington Road, Ithaca | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4005 Douglas Highway, Gillette | WY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 366      
Initial Costs to Company, Buildings and Improvements 3,447      
Gross Amount at Which Carried at Close of Period, Land 366      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,447      
Total 3,813      
Accumulated Depreciation $ 130      
Date of Construction 2014      
Date Acquired 2016      
Retail Properties | 4005 Douglas Highway, Gillette | WY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4005 Douglas Highway, Gillette | WY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 27775 Novi Rd., Novi | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 201      
Initial Costs to Company, Buildings and Improvements 12,681      
Gross Amount at Which Carried at Close of Period, Land 201      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 12,681      
Total 12,882      
Accumulated Depreciation $ 316      
Date of Construction 1985      
Date Acquired 2017      
Retail Properties | 27775 Novi Rd., Novi | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 27775 Novi Rd., Novi | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 8748 West Saginaw Hwy, Lansing | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 88      
Initial Costs to Company, Buildings and Improvements 13,919      
Costs Capitalized Subsequent to Acquisition, Improvements 3      
Gross Amount at Which Carried at Close of Period, Land 88      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 13,922      
Total 14,010      
Accumulated Depreciation $ 334      
Date of Construction 1999      
Date Acquired 2017      
Retail Properties | 8748 West Saginaw Hwy, Lansing | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 8748 West Saginaw Hwy, Lansing | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4577 Miller Road, Flint | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 83      
Initial Costs to Company, Buildings and Improvements 7,987      
Gross Amount at Which Carried at Close of Period, Land 83      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 7,987      
Total 8,070      
Accumulated Depreciation $ 192      
Date of Construction 1977      
Date Acquired 2017      
Retail Properties | 4577 Miller Road, Flint | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4577 Miller Road, Flint | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 33801 S. Gratiot Ave., Clinton Township | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 358      
Initial Costs to Company, Buildings and Improvements 9,551      
Gross Amount at Which Carried at Close of Period, Land 358      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,551      
Total 9,909      
Accumulated Depreciation $ 231      
Date of Construction 1987      
Date Acquired 2017      
Retail Properties | 33801 S. Gratiot Ave., Clinton Township | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 33801 S. Gratiot Ave., Clinton Township | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 50400 Gratiot Ave., Chesterfield | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 753      
Initial Costs to Company, Buildings and Improvements 9,716      
Gross Amount at Which Carried at Close of Period, Land 753      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,716      
Total 10,469      
Accumulated Depreciation $ 242      
Date of Construction 2003      
Date Acquired 2017      
Retail Properties | 50400 Gratiot Ave., Chesterfield | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 50400 Gratiot Ave., Chesterfield | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1775 Oak Hollow Dr., Traverse City | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 106      
Initial Costs to Company, Buildings and Improvements 8,468      
Gross Amount at Which Carried at Close of Period, Land 106      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 8,468      
Total 8,574      
Accumulated Depreciation $ 204      
Date of Construction 1998      
Date Acquired 2017      
Retail Properties | 1775 Oak Hollow Dr., Traverse City | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1775 Oak Hollow Dr., Traverse City | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6340 East 14 Mile Road, Warren | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 158      
Initial Costs to Company, Buildings and Improvements 5,394      
Gross Amount at Which Carried at Close of Period, Land 158      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,394      
Total 5,552      
Accumulated Depreciation $ 130      
Date of Construction 1991      
Date Acquired 2017      
Retail Properties | 6340 East 14 Mile Road, Warren | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6340 East 14 Mile Road, Warren | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4625 Wilson Ave. SW, Grandville | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 339      
Initial Costs to Company, Buildings and Improvements 4,368      
Gross Amount at Which Carried at Close of Period, Land 339      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 4,368      
Total 4,707      
Accumulated Depreciation $ 108      
Date of Construction 2002      
Date Acquired 2017      
Retail Properties | 4625 Wilson Ave. SW, Grandville | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4625 Wilson Ave. SW, Grandville | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3500 28th St. SE, Grand Rapids | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 68      
Initial Costs to Company, Buildings and Improvements 1,038      
Gross Amount at Which Carried at Close of Period, Land 68      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,038      
Total 1,106      
Accumulated Depreciation $ 27      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 3500 28th St. SE, Grand Rapids | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3500 28th St. SE, Grand Rapids | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5641 S. Westnedge Avenue, Portage | MICHIGAN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 38      
Initial Costs to Company, Buildings and Improvements 2,041      
Gross Amount at Which Carried at Close of Period, Land 38      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,041      
Total 2,079      
Accumulated Depreciation $ 42      
Date of Construction 1981      
Date Acquired 2017      
Retail Properties | 5641 S. Westnedge Avenue, Portage | MICHIGAN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5641 S. Westnedge Avenue, Portage | MICHIGAN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 13050 Brookpark Road Brook, Park | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 180      
Initial Costs to Company, Buildings and Improvements 1,875      
Gross Amount at Which Carried at Close of Period, Land 180      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,875      
Total 2,055      
Accumulated Depreciation $ 37      
Date of Construction 2000      
Date Acquired 2017      
Retail Properties | 13050 Brookpark Road Brook, Park | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 13050 Brookpark Road Brook, Park | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3023 South Second Street, Terre Haute | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 207      
Initial Costs to Company, Buildings and Improvements 1,860      
Gross Amount at Which Carried at Close of Period, Land 207      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,860      
Total 2,067      
Accumulated Depreciation $ 36      
Date of Construction 1984      
Date Acquired 2017      
Retail Properties | 3023 South Second Street, Terre Haute | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3023 South Second Street, Terre Haute | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1 Mariner Court, Harmarville | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 157      
Initial Costs to Company, Buildings and Improvements 1,761      
Gross Amount at Which Carried at Close of Period, Land 157      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,761      
Total 1,918      
Accumulated Depreciation $ 38      
Date of Construction 1984      
Date Acquired 2017      
Retail Properties | 1 Mariner Court, Harmarville | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1 Mariner Court, Harmarville | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7347 California Avenue, Youngstown | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 72      
Initial Costs to Company, Buildings and Improvements 1,945      
Gross Amount at Which Carried at Close of Period, Land 72      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,945      
Total 2,017      
Accumulated Depreciation $ 38      
Date of Construction 1983      
Date Acquired 2017      
Retail Properties | 7347 California Avenue, Youngstown | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7347 California Avenue, Youngstown | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 932 Sheraton Drive, Mars | PA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 381      
Initial Costs to Company, Buildings and Improvements 1,572      
Gross Amount at Which Carried at Close of Period, Land 381      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,572      
Total 1,953      
Accumulated Depreciation $ 35      
Date of Construction 2004      
Date Acquired 2017      
Retail Properties | 932 Sheraton Drive, Mars | PA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 932 Sheraton Drive, Mars | PA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4300 State Route 26 E., Lafayette | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 125      
Initial Costs to Company, Buildings and Improvements 1,793      
Gross Amount at Which Carried at Close of Period, Land 125      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,793      
Total 1,918      
Accumulated Depreciation $ 34      
Date of Construction 1976      
Date Acquired 2017      
Retail Properties | 4300 State Route 26 E., Lafayette | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4300 State Route 26 E., Lafayette | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1776 McDonough Street, Joliet | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 366      
Initial Costs to Company, Buildings and Improvements 1,505      
Gross Amount at Which Carried at Close of Period, Land 366      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,505      
Total 1,871      
Accumulated Depreciation $ 34      
Date of Construction 1983      
Date Acquired 2017      
Retail Properties | 1776 McDonough Street, Joliet | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1776 McDonough Street, Joliet | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4471 Eastgate Boulevard, Cincinnati | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 638      
Initial Costs to Company, Buildings and Improvements 1,515      
Gross Amount at Which Carried at Close of Period, Land 638      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,515      
Total 2,153      
Accumulated Depreciation $ 33      
Date of Construction 1988      
Date Acquired 2017      
Retail Properties | 4471 Eastgate Boulevard, Cincinnati | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4471 Eastgate Boulevard, Cincinnati | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1301 South Columbus Pike, Delaware | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 54      
Initial Costs to Company, Buildings and Improvements 1,788      
Gross Amount at Which Carried at Close of Period, Land 54      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,788      
Total 1,842      
Accumulated Depreciation $ 35      
Date of Construction 1987      
Date Acquired 2017      
Retail Properties | 1301 South Columbus Pike, Delaware | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1301 South Columbus Pike, Delaware | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 151 Park Center, Wadsworth | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 310      
Initial Costs to Company, Buildings and Improvements 1,612      
Gross Amount at Which Carried at Close of Period, Land 310      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,612      
Total 1,922      
Accumulated Depreciation $ 35      
Date of Construction 1989      
Date Acquired 2017      
Retail Properties | 151 Park Center, Wadsworth | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 151 Park Center, Wadsworth | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 489 Orphanage Road, Fort Wright | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 68      
Initial Costs to Company, Buildings and Improvements 2,373      
Costs Capitalized Subsequent to Acquisition, Improvements 9      
Gross Amount at Which Carried at Close of Period, Land 68      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,382      
Total 2,450      
Accumulated Depreciation $ 47      
Date of Construction 1997      
Date Acquired 2017      
Retail Properties | 489 Orphanage Road, Fort Wright | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 489 Orphanage Road, Fort Wright | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2449 Gilchrist Road, Akron | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 134      
Initial Costs to Company, Buildings and Improvements 1,605      
Gross Amount at Which Carried at Close of Period, Land 134      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,605      
Total 1,739      
Accumulated Depreciation $ 41      
Date of Construction 1998      
Date Acquired 2017      
Retail Properties | 2449 Gilchrist Road, Akron | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2449 Gilchrist Road, Akron | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 4424 Fairfax Drive, Mt. Vernon | ILLINOIS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 68      
Initial Costs to Company, Buildings and Improvements 1,849      
Gross Amount at Which Carried at Close of Period, Land 68      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,849      
Total 1,917      
Accumulated Depreciation $ 39      
Date of Construction 2001      
Date Acquired 2017      
Retail Properties | 4424 Fairfax Drive, Mt. Vernon | ILLINOIS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 4424 Fairfax Drive, Mt. Vernon | ILLINOIS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 241 Wal-Mart Way, Mavsville | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 37      
Initial Costs to Company, Buildings and Improvements 1,889      
Gross Amount at Which Carried at Close of Period, Land 37      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,889      
Total 1,926      
Accumulated Depreciation $ 38      
Date of Construction 2003      
Date Acquired 2017      
Retail Properties | 241 Wal-Mart Way, Mavsville | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 241 Wal-Mart Way, Mavsville | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2896 Pike Street, Parkersburg | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 280      
Initial Costs to Company, Buildings and Improvements 1,631      
Gross Amount at Which Carried at Close of Period, Land 280      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,631      
Total 1,911      
Accumulated Depreciation $ 34      
Date of Construction 2004      
Date Acquired 2017      
Retail Properties | 2896 Pike Street, Parkersburg | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2896 Pike Street, Parkersburg | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 475 Gateway Boulevard, Chesterton | IN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 343      
Initial Costs to Company, Buildings and Improvements 1,613      
Gross Amount at Which Carried at Close of Period, Land 343      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,613      
Total 1,956      
Accumulated Depreciation $ 34      
Date of Construction 2004      
Date Acquired 2017      
Retail Properties | 475 Gateway Boulevard, Chesterton | IN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 475 Gateway Boulevard, Chesterton | IN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 121 Kinetic Drive, Huntington | WEST VIRGINIA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 344      
Initial Costs to Company, Buildings and Improvements 1,575      
Gross Amount at Which Carried at Close of Period, Land 344      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,575      
Total 1,919      
Accumulated Depreciation $ 32      
Date of Construction 2005      
Date Acquired 2017      
Retail Properties | 121 Kinetic Drive, Huntington | WEST VIRGINIA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 121 Kinetic Drive, Huntington | WEST VIRGINIA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1799 St Rt 125, Amelia | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 315      
Initial Costs to Company, Buildings and Improvements 1,719      
Gross Amount at Which Carried at Close of Period, Land 315      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,719      
Total 2,034      
Accumulated Depreciation $ 33      
Date of Construction 2006      
Date Acquired 2017      
Retail Properties | 1799 St Rt 125, Amelia | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1799 St Rt 125, Amelia | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2100 South Main St., Bellefontaine | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 100      
Initial Costs to Company, Buildings and Improvements 1,833      
Gross Amount at Which Carried at Close of Period, Land 100      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,833      
Total 1,933      
Accumulated Depreciation $ 38      
Date of Construction 1994      
Date Acquired 2017      
Retail Properties | 2100 South Main St., Bellefontaine | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2100 South Main St., Bellefontaine | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 12930 State Route 664, Logan | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 153      
Initial Costs to Company, Buildings and Improvements 1,880      
Gross Amount at Which Carried at Close of Period, Land 153      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,880      
Total 2,033      
Accumulated Depreciation $ 42      
Date of Construction 2008      
Date Acquired 2017      
Retail Properties | 12930 State Route 664, Logan | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 12930 State Route 664, Logan | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 618 Ring Road, Harrison | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 204      
Initial Costs to Company, Buildings and Improvements 1,514      
Gross Amount at Which Carried at Close of Period, Land 204      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,514      
Total 1,718      
Accumulated Depreciation $ 32      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 618 Ring Road, Harrison | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 618 Ring Road, Harrison | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1730 E. Wyandot Avenue, Upper Sandusky | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 171      
Initial Costs to Company, Buildings and Improvements 1,198      
Gross Amount at Which Carried at Close of Period, Land 171      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,198      
Total 1,369      
Accumulated Depreciation $ 25      
Date of Construction 1994      
Date Acquired 2017      
Retail Properties | 1730 E. Wyandot Avenue, Upper Sandusky | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1730 E. Wyandot Avenue, Upper Sandusky | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6473 DeZavala Road, San Antonio | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 300      
Initial Costs to Company, Buildings and Improvements 1,277      
Costs Capitalized Subsequent to Acquisition, Improvements 1      
Gross Amount at Which Carried at Close of Period, Land 300      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,278      
Total 1,578      
Accumulated Depreciation $ 24      
Date of Construction 1998      
Date Acquired 2017      
Retail Properties | 6473 DeZavala Road, San Antonio | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6473 DeZavala Road, San Antonio | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 16262 IH 35 N, Selma | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 269      
Initial Costs to Company, Buildings and Improvements 805      
Gross Amount at Which Carried at Close of Period, Land 269      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 805      
Total 1,074      
Accumulated Depreciation $ 21      
Date of Construction 2013      
Date Acquired 2017      
Retail Properties | 16262 IH 35 N, Selma | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 16262 IH 35 N, Selma | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 981 Seven Oaks Drive, Linwood | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 206      
Initial Costs to Company, Buildings and Improvements 475      
Gross Amount at Which Carried at Close of Period, Land 206      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 475      
Total 681      
Accumulated Depreciation $ 11      
Date of Construction 1997      
Date Acquired 2017      
Retail Properties | 981 Seven Oaks Drive, Linwood | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 981 Seven Oaks Drive, Linwood | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 590 Valley Chili Road, Vinton | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 469      
Initial Costs to Company, Buildings and Improvements 384      
Gross Amount at Which Carried at Close of Period, Land 469      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 384      
Total 853      
Accumulated Depreciation $ 8      
Date of Construction 2016      
Date Acquired 2017      
Retail Properties | 590 Valley Chili Road, Vinton | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 590 Valley Chili Road, Vinton | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9541 152nd Ave. NE, Columbus | MN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 406      
Initial Costs to Company, Buildings and Improvements 944      
Gross Amount at Which Carried at Close of Period, Land 406      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 944      
Total 1,350      
Accumulated Depreciation $ 13      
Date of Construction 1983      
Date Acquired 2017      
Retail Properties | 9541 152nd Ave. NE, Columbus | MN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9541 152nd Ave. NE, Columbus | MN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 12101 Dixie Highway, Louisville | KY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 370      
Initial Costs to Company, Buildings and Improvements 240      
Gross Amount at Which Carried at Close of Period, Land 370      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 240      
Total 610      
Accumulated Depreciation $ 5      
Date of Construction 2002      
Date Acquired 2017      
Retail Properties | 12101 Dixie Highway, Louisville | KY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 12101 Dixie Highway, Louisville | KY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1320 Interstate Drive, Dunn | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 199      
Initial Costs to Company, Buildings and Improvements 659      
Gross Amount at Which Carried at Close of Period, Land 199      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 659      
Total 858      
Accumulated Depreciation $ 10      
Date of Construction 2017      
Date Acquired 2017      
Retail Properties | 1320 Interstate Drive, Dunn | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1320 Interstate Drive, Dunn | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5680 S. Interstate Highway 35, San Marcos | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 486      
Initial Costs to Company, Buildings and Improvements 776      
Gross Amount at Which Carried at Close of Period, Land 486      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 776      
Total 1,262      
Accumulated Depreciation $ 5      
Date of Construction 2017      
Date Acquired 2017      
Retail Properties | 5680 S. Interstate Highway 35, San Marcos | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5680 S. Interstate Highway 35, San Marcos | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1600 S. Koeller Street, Oshkosh | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 134      
Initial Costs to Company, Buildings and Improvements 5,372      
Gross Amount at Which Carried at Close of Period, Land 134      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 5,372      
Total 5,506      
Accumulated Depreciation $ 57      
Date of Construction 1995      
Date Acquired 2017      
Retail Properties | 1600 S. Koeller Street, Oshkosh | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1600 S. Koeller Street, Oshkosh | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3640 Greenwing Drive, Sheboygan | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 266      
Initial Costs to Company, Buildings and Improvements 2,787      
Gross Amount at Which Carried at Close of Period, Land 266      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,787      
Total 3,053      
Accumulated Depreciation $ 35      
Date of Construction 2002      
Date Acquired 2017      
Retail Properties | 3640 Greenwing Drive, Sheboygan | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3640 Greenwing Drive, Sheboygan | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 615 N. Rolling Meadows Drive, Fond du Lac | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 120      
Initial Costs to Company, Buildings and Improvements 658      
Gross Amount at Which Carried at Close of Period, Land 120      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 658      
Total 778      
Accumulated Depreciation $ 9      
Date of Construction 2006      
Date Acquired 2017      
Retail Properties | 615 N. Rolling Meadows Drive, Fond du Lac | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 615 N. Rolling Meadows Drive, Fond du Lac | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 800 Hansen Road, Green Bay | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 398      
Initial Costs to Company, Buildings and Improvements 9,087      
Gross Amount at Which Carried at Close of Period, Land 398      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 9,087      
Total 9,485      
Accumulated Depreciation $ 96      
Date of Construction 1992      
Date Acquired 2017      
Retail Properties | 800 Hansen Road, Green Bay | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 800 Hansen Road, Green Bay | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3911 Dewey Street, Manitowoc | WI        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 293      
Initial Costs to Company, Buildings and Improvements 2,926      
Gross Amount at Which Carried at Close of Period, Land 293      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,926      
Total 3,219      
Accumulated Depreciation $ 35      
Date of Construction 1993      
Date Acquired 2017      
Retail Properties | 3911 Dewey Street, Manitowoc | WI | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3911 Dewey Street, Manitowoc | WI | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3008 S. Congress Avenue, Boynton Beach | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 960      
Initial Costs to Company, Buildings and Improvements 2,803      
Gross Amount at Which Carried at Close of Period, Land 960      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,803      
Total 3,763      
Accumulated Depreciation $ 22      
Date of Construction 2007      
Date Acquired 2017      
Retail Properties | 3008 S. Congress Avenue, Boynton Beach | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3008 S. Congress Avenue, Boynton Beach | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 8714 Atlantic Boulevard, Jacksonville | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 444      
Initial Costs to Company, Buildings and Improvements 2,179      
Gross Amount at Which Carried at Close of Period, Land 444      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,179      
Total 2,623      
Accumulated Depreciation $ 20      
Date of Construction 2008      
Date Acquired 2017      
Retail Properties | 8714 Atlantic Boulevard, Jacksonville | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 8714 Atlantic Boulevard, Jacksonville | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 9491 Baymeadows Road, Jacksonville | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 319      
Initial Costs to Company, Buildings and Improvements 2,191      
Gross Amount at Which Carried at Close of Period, Land 319      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,191      
Total 2,510      
Accumulated Depreciation $ 14      
Date of Construction 1999      
Date Acquired 2017      
Retail Properties | 9491 Baymeadows Road, Jacksonville | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9491 Baymeadows Road, Jacksonville | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 17551 NW 27th Avenue, Miami Gardens | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 803      
Initial Costs to Company, Buildings and Improvements 2,181      
Gross Amount at Which Carried at Close of Period, Land 803      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,181      
Total 2,984      
Accumulated Depreciation $ 20      
Date of Construction 2009      
Date Acquired 2017      
Retail Properties | 17551 NW 27th Avenue, Miami Gardens | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 17551 NW 27th Avenue, Miami Gardens | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 580 Blanding Boulevard, Orange Park | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 365      
Initial Costs to Company, Buildings and Improvements 2,471      
Gross Amount at Which Carried at Close of Period, Land 365      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,471      
Total 2,836      
Accumulated Depreciation $ 27      
Date of Construction 2006      
Date Acquired 2017      
Retail Properties | 580 Blanding Boulevard, Orange Park | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 580 Blanding Boulevard, Orange Park | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 6155 US-90, Milton | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 505      
Initial Costs to Company, Buildings and Improvements 1,994      
Gross Amount at Which Carried at Close of Period, Land 505      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,994      
Total 2,499      
Accumulated Depreciation $ 19      
Date of Construction 2005      
Date Acquired 2017      
Retail Properties | 6155 US-90, Milton | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6155 US-90, Milton | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 700 N. Webb Road, Wichita | KANSAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 488      
Initial Costs to Company, Buildings and Improvements 2,135      
Gross Amount at Which Carried at Close of Period, Land 488      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,135      
Total 2,623      
Accumulated Depreciation $ 19      
Date of Construction 2008      
Date Acquired 2017      
Retail Properties | 700 N. Webb Road, Wichita | KANSAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 700 N. Webb Road, Wichita | KANSAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 10220 E. 61st Street, Tulsa | OKLAHOMA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 113      
Initial Costs to Company, Buildings and Improvements 1,890      
Gross Amount at Which Carried at Close of Period, Land 113      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,890      
Total 2,003      
Accumulated Depreciation $ 18      
Date of Construction 2008      
Date Acquired 2017      
Retail Properties | 10220 E. 61st Street, Tulsa | OKLAHOMA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 10220 E. 61st Street, Tulsa | OKLAHOMA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 220 S. Hall Road, Alcoa | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 751      
Initial Costs to Company, Buildings and Improvements 1,829      
Gross Amount at Which Carried at Close of Period, Land 751      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,829      
Total 2,580      
Accumulated Depreciation $ 19      
Date of Construction 1993      
Date Acquired 2017      
Retail Properties | 220 S. Hall Road, Alcoa | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 220 S. Hall Road, Alcoa | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 7 years      
Retail Properties | 21428 State Route 22, Hoosick Falls | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 78      
Initial Costs to Company, Buildings and Improvements 1,612      
Gross Amount at Which Carried at Close of Period, Land 78      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,612      
Total 1,690      
Accumulated Depreciation $ 7      
Date of Construction 2012      
Date Acquired 2017      
Retail Properties | 21428 State Route 22, Hoosick Falls | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 21428 State Route 22, Hoosick Falls | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6367 Route 9N, Hadley | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 100      
Initial Costs to Company, Buildings and Improvements 1,586      
Gross Amount at Which Carried at Close of Period, Land 100      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,586      
Total 1,686      
Accumulated Depreciation $ 7      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 6367 Route 9N, Hadley | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6367 Route 9N, Hadley | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 29 Main Street, Cairo | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 106      
Initial Costs to Company, Buildings and Improvements 1,609      
Gross Amount at Which Carried at Close of Period, Land 106      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,609      
Total 1,715      
Accumulated Depreciation $ 6      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 29 Main Street, Cairo | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 29 Main Street, Cairo | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 9501 US Route 20, Bridgewater | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 241      
Initial Costs to Company, Buildings and Improvements 1,482      
Gross Amount at Which Carried at Close of Period, Land 241      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,482      
Total 1,723      
Accumulated Depreciation $ 7      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 9501 US Route 20, Bridgewater | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 9501 US Route 20, Bridgewater | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3067 US Route 9, Valatie | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 102      
Initial Costs to Company, Buildings and Improvements 1,720      
Gross Amount at Which Carried at Close of Period, Land 102      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,720      
Total 1,822      
Accumulated Depreciation $ 7      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 3067 US Route 9, Valatie | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3067 US Route 9, Valatie | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3282 Route 209, Wutsboro | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 83      
Initial Costs to Company, Buildings and Improvements 1,640      
Gross Amount at Which Carried at Close of Period, Land 83      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,640      
Total 1,723      
Accumulated Depreciation $ 7      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 3282 Route 209, Wutsboro | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3282 Route 209, Wutsboro | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5602 Route 11, Ellenburg | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 133      
Initial Costs to Company, Buildings and Improvements 1,595      
Gross Amount at Which Carried at Close of Period, Land 133      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,595      
Total 1,728      
Accumulated Depreciation $ 7      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 5602 Route 11, Ellenburg | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5602 Route 11, Ellenburg | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 3838 Walworth-Marion Road, Marion | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 149      
Initial Costs to Company, Buildings and Improvements 1,457      
Gross Amount at Which Carried at Close of Period, Land 149      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,457      
Total 1,606      
Accumulated Depreciation $ 6      
Date of Construction 2013      
Date Acquired 2017      
Retail Properties | 3838 Walworth-Marion Road, Marion | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 3838 Walworth-Marion Road, Marion | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 7754 St. Rt. 104, Oswego | NY        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 124      
Initial Costs to Company, Buildings and Improvements 1,636      
Gross Amount at Which Carried at Close of Period, Land 124      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,636      
Total 1,760      
Accumulated Depreciation $ 7      
Date of Construction 2015      
Date Acquired 2017      
Retail Properties | 7754 St. Rt. 104, Oswego | NY | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 7754 St. Rt. 104, Oswego | NY | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1027 William Howard Taft Road, Cincinnati | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 367      
Initial Costs to Company, Buildings and Improvements 1,168      
Gross Amount at Which Carried at Close of Period, Land 367      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,168      
Total 1,535      
Accumulated Depreciation $ 4      
Date of Construction 2014      
Date Acquired 2017      
Retail Properties | 1027 William Howard Taft Road, Cincinnati | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1027 William Howard Taft Road, Cincinnati | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5245 N. Dixie Drive, Dayton | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 249      
Initial Costs to Company, Buildings and Improvements 1,240      
Gross Amount at Which Carried at Close of Period, Land 249      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,240      
Total 1,489      
Accumulated Depreciation $ 5      
Date of Construction 2013      
Date Acquired 2017      
Retail Properties | 5245 N. Dixie Drive, Dayton | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5245 N. Dixie Drive, Dayton | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 324 W. Dayton Street, West Alexandria | OH        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 371      
Initial Costs to Company, Buildings and Improvements 1,108      
Gross Amount at Which Carried at Close of Period, Land 371      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,108      
Total 1,479      
Accumulated Depreciation $ 4      
Date of Construction 2011      
Date Acquired 2017      
Retail Properties | 324 W. Dayton Street, West Alexandria | OH | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 324 W. Dayton Street, West Alexandria | OH | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 670 North Main Street, Sheffield | MASSACHUSETTS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 109      
Initial Costs to Company, Buildings and Improvements 1,687      
Gross Amount at Which Carried at Close of Period, Land 109      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,687      
Total 1,796      
Accumulated Depreciation $ 6      
Date of Construction 2015      
Date Acquired 2017      
Retail Properties | 670 North Main Street, Sheffield | MASSACHUSETTS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 670 North Main Street, Sheffield | MASSACHUSETTS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 104 S. Clark Road, Cedar Hill | TEXAS        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 501      
Initial Costs to Company, Buildings and Improvements 1,842      
Gross Amount at Which Carried at Close of Period, Land 501      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,842      
Total 2,343      
Accumulated Depreciation $ 7      
Date of Construction 2015      
Date Acquired 2017      
Retail Properties | 104 S. Clark Road, Cedar Hill | TEXAS | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 104 S. Clark Road, Cedar Hill | TEXAS | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1880 Pulaski Highway, Bear | DE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 398      
Initial Costs to Company, Buildings and Improvements 2,164      
Gross Amount at Which Carried at Close of Period, Land 398      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,164      
Total 2,562      
Accumulated Depreciation $ 8      
Date of Construction 2017      
Date Acquired 2017      
Retail Properties | 1880 Pulaski Highway, Bear | DE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1880 Pulaski Highway, Bear | DE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 6120 E Independence Boulevard, Charlotte | NORTH CAROLINA        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,148      
Initial Costs to Company, Buildings and Improvements 1,789      
Gross Amount at Which Carried at Close of Period, Land 1,148      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,789      
Total 2,937      
Accumulated Depreciation $ 7      
Date of Construction 2013      
Date Acquired 2017      
Retail Properties | 6120 E Independence Boulevard, Charlotte | NORTH CAROLINA | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 6120 E Independence Boulevard, Charlotte | NORTH CAROLINA | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 490 S. Illinois Avenue, Oak Ridge | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,167      
Initial Costs to Company, Buildings and Improvements 1,684      
Gross Amount at Which Carried at Close of Period, Land 1,167      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,684      
Total 2,851      
Accumulated Depreciation $ 7      
Date of Construction 2013      
Date Acquired 2017      
Retail Properties | 490 S. Illinois Avenue, Oak Ridge | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 490 S. Illinois Avenue, Oak Ridge | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 2468 Alcoa Highway, Alcoa | TN        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,022      
Initial Costs to Company, Buildings and Improvements 1,760      
Gross Amount at Which Carried at Close of Period, Land 1,022      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 1,760      
Total 2,782      
Accumulated Depreciation $ 7      
Date of Construction 2015      
Date Acquired 2017      
Retail Properties | 2468 Alcoa Highway, Alcoa | TN | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 2468 Alcoa Highway, Alcoa | TN | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 1300 DuPont Parkway, Smyrna | DE        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,366      
Initial Costs to Company, Buildings and Improvements 2,708      
Gross Amount at Which Carried at Close of Period, Land 1,366      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 2,708      
Total 4,074      
Accumulated Depreciation $ 13      
Date of Construction 2016      
Date Acquired 2017      
Retail Properties | 1300 DuPont Parkway, Smyrna | DE | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 1300 DuPont Parkway, Smyrna | DE | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years      
Retail Properties | 5881 Bayshore Road, North Fort Myers | FL        
Real Estate And Accumulated Depreciation [Line Items]        
Initial Costs to Company, Land $ 1,002      
Initial Costs to Company, Buildings and Improvements 3,361      
Gross Amount at Which Carried at Close of Period, Land 1,002      
Gross Amount at Which Carried at Close of Period, Buildings and Improvements 3,361      
Total 4,363      
Accumulated Depreciation $ 13      
Date of Construction 2015      
Date Acquired 2017      
Retail Properties | 5881 Bayshore Road, North Fort Myers | FL | Maximum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 39 years      
Retail Properties | 5881 Bayshore Road, North Fort Myers | FL | Minimum        
Real Estate And Accumulated Depreciation [Line Items]        
Life on Which Depreciation is Computed 15 years