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Schedule III - Real Estate and Accumulated Depreciation and Amortization - Schedule III (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 882,952 |  |  |
Land and Land Estates | 743,125 |  |  |
Buildings and Improvements | 3,038,034 |  |  |
Total | 3,789,711 | $ 3,671,560 | $ 3,812,294 | $ 3,564,466
Accumulated Depreciation and Amortization | 812,207 | 795,486 | $ 775,617 | $ 738,068
Construction in progress | 8,552 | $ 14,946 |  |
Office Building [Member] | Little Rock, Arkansas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 1,353 |  |  |
Buildings and Improvements | 2,260 |  |  |
Total | 3,613 |  |  |
Accumulated Depreciation and Amortization | $ 545 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Pine Bluff, Arkansas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 271 |  |  |
Buildings and Improvements | 603 |  |  |
Total | 874 |  |  |
Accumulated Depreciation and Amortization | $ 228 |  |  |
Office Building [Member] | Pine Bluff, Arkansas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Pine Bluff, Arkansas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Pine Bluff, Arkansas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Glendale, Arizona [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 9,418 |  |  |
Buildings and Improvements | 8,394 |  |  |
Total | 17,812 |  |  |
Accumulated Depreciation and Amortization | $ 2,202 |  |  |
Office Building [Member] | Glendale, Arizona [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Glendale, Arizona [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 24 years |  |  |
Office Building [Member] | Glendale, Arizona [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Glendale, Arizona [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property, Acquired Dec-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,585 |  |  |
Buildings and Improvements | 36,923 |  |  |
Total | 42,508 |  |  |
Accumulated Depreciation and Amortization | $ 3,278 |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property, Acquired Dec-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property, Acquired Dec-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property, Acquired Dec-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property, Acquired Dec-12 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 17 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property acquired May-00 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,666 |  |  |
Buildings and Improvements | 24,856 |  |  |
Total | 29,522 |  |  |
Accumulated Depreciation and Amortization | $ 9,515 |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property acquired May-00 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property acquired May-00 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Phoenix, Arizona [Member] | Phoenix, AZ Office Property acquired May-00 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 13,086 |  |  |
Total | 13,086 |  |  |
Accumulated Depreciation and Amortization | $ 1,505 |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 36 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Sep-12 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Dec-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,185 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 9,442 |  |  |
Total | 9,442 |  |  |
Accumulated Depreciation and Amortization | $ 2,884 |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Dec-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Office Building [Member] | Tempe, Arizona [Member] | Tempe, AZ Office Acquired Dec-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Tucson, Arizona [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 681 |  |  |
Buildings and Improvements | 4,037 |  |  |
Total | 4,718 |  |  |
Accumulated Depreciation and Amortization | $ 580 |  |  |
Office Building [Member] | Tucson, Arizona [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Tucson, Arizona [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Office Building [Member] | Tucson, Arizona [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Lake Forest, California [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,442 |  |  |
Buildings and Improvements | 13,769 |  |  |
Total | 17,211 |  |  |
Accumulated Depreciation and Amortization | $ 4,747 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Los Angeles, California [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,110 |  |  |
Buildings and Improvements | 12,158 |  |  |
Total | 17,268 |  |  |
Accumulated Depreciation and Amortization | $ 7,250 |  |  |
Office Building [Member] | Los Angeles, California [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Los Angeles, California [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Los Angeles, California [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Palo Alto, California [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 48,512 |  |  |
Land and Land Estates | 12,398 |  |  |
Buildings and Improvements | 16,977 |  |  |
Total | 29,375 |  |  |
Accumulated Depreciation and Amortization | $ 19,420 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Centenial, Colorado [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,851 |  |  |
Buildings and Improvements | 15,239 |  |  |
Total | 20,090 |  |  |
Accumulated Depreciation and Amortization | $ 5,889 |  |  |
Office Building [Member] | Centenial, Colorado [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Centenial, Colorado [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Englewood, Colorado [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,207 |  |  |
Buildings and Improvements | 27,851 |  |  |
Total | 30,058 |  |  |
Accumulated Depreciation and Amortization | $ 2,857 |  |  |
Office Building [Member] | Englewood, Colorado [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Englewood, Colorado [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Englewood, Colorado [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 19 years |  |  |
Office Building [Member] | Lakewood, Colorado [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,569 |  |  |
Buildings and Improvements | 10,286 |  |  |
Total | 11,855 |  |  |
Accumulated Depreciation and Amortization | $ 6,102 |  |  |
Office Building [Member] | Lakewood, Colorado [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Office Building [Member] | Lakewood, Colorado [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lakewood, Colorado [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Lakewood, Colorado [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Lakewood, Colorado [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Louisville, Colorado [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,657 |  |  |
Buildings and Improvements | 11,217 |  |  |
Total | 14,874 |  |  |
Accumulated Depreciation and Amortization | $ 3,069 |  |  |
Office Building [Member] | Louisville, Colorado [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | Louisville, Colorado [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Louisville, Colorado [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Louisville, Colorado [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Parachute, Colorado [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,400 |  |  |
Buildings and Improvements | 10,751 |  |  |
Total | 12,151 |  |  |
Accumulated Depreciation and Amortization | $ 581 |  |  |
Office Building [Member] | Parachute, Colorado [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 19 years |  |  |
Office Building [Member] | Parachute, Colorado [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Parachute, Colorado [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 24 years |  |  |
Office Building [Member] | Wallingford, Connecticut [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,049 |  |  |
Buildings and Improvements | 4,773 |  |  |
Total | 5,822 |  |  |
Accumulated Depreciation and Amortization | $ 1,652 |  |  |
Office Building [Member] | Wallingford, Connecticut [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | Wallingford, Connecticut [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Boca Raton, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 19,624 |  |  |
Land and Land Estates | 4,290 |  |  |
Buildings and Improvements | 17,160 |  |  |
Total | 21,450 |  |  |
Accumulated Depreciation and Amortization | $ 5,524 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,438 |  |  |
Buildings and Improvements | 15,271 |  |  |
Total | 19,709 |  |  |
Accumulated Depreciation and Amortization | $ 5,302 |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,535 |  |  |
Buildings and Improvements | 14,939 |  |  |
Total | 19,474 |  |  |
Accumulated Depreciation and Amortization | $ 5,298 |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Lake Mary, Florida [Member] | Lake Mary, FL Office Acquired Jun-07, Property 2 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 18 years |  |  |
Office Building [Member] | Orlando, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 9,471 |  |  |
Land and Land Estates | 3,538 |  |  |
Buildings and Improvements | 9,844 |  |  |
Total | 13,382 |  |  |
Accumulated Depreciation and Amortization | $ 5,361 |  |  |
Office Building [Member] | Orlando, Florida [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Orlando, Florida [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Orlando, Florida [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Orlando, Florida [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Orlando, Florida [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Palm Beach Gardens, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 787 |  |  |
Buildings and Improvements | 3,732 |  |  |
Total | 4,519 |  |  |
Accumulated Depreciation and Amortization | $ 1,502 |  |  |
Office Building [Member] | Palm Beach Gardens, Florida [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Palm Beach Gardens, Florida [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 146 |  |  |
Buildings and Improvements | 559 |  |  |
Total | 705 |  |  |
Accumulated Depreciation and Amortization | $ 36 |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 35 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 895 |  |  |
Buildings and Improvements | 5,496 |  |  |
Total | 6,391 |  |  |
Accumulated Depreciation and Amortization | $ 322 |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 2 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 2 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 38 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,018 |  |  |
Buildings and Improvements | 7,993 |  |  |
Total | 10,011 |  |  |
Accumulated Depreciation and Amortization | $ 1,327 |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 27 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 398 |  |  |
Buildings and Improvements | 1,571 |  |  |
Total | 1,969 |  |  |
Accumulated Depreciation and Amortization | $ 100 |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 3 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 3 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Tampa, Florida [Member] | Tampa, FL Office Acquired Dec-13, Property 3 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,443 |  |  |
Buildings and Improvements | 11,433 |  |  |
Total | 12,876 |  |  |
Accumulated Depreciation and Amortization | $ 1,443 |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 38 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 693 |  |  |
Buildings and Improvements | 6,405 |  |  |
Total | 7,098 |  |  |
Accumulated Depreciation and Amortization | $ 858 |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12, Property 2 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12, Property 2 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | McDonough, Georgia [Member] | McDonough, GA Office Acquired Sep-12, Property 2 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Meridian, Idaho [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 9,322 |  |  |
Land and Land Estates | 2,255 |  |  |
Buildings and Improvements | 7,797 |  |  |
Total | 10,052 |  |  |
Accumulated Depreciation and Amortization | $ 1,339 |  |  |
Office Building [Member] | Meridian, Idaho [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Meridian, Idaho [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 37 years |  |  |
Office Building [Member] | Lisle, Illinois [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 9,449 |  |  |
Land and Land Estates | 3,236 |  |  |
Buildings and Improvements | 13,854 |  |  |
Total | 17,090 |  |  |
Accumulated Depreciation and Amortization | $ 4,124 |  |  |
Office Building [Member] | Lisle, Illinois [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Office Building [Member] | Lisle, Illinois [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lisle, Illinois [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Lisle, Illinois [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Lisle, Illinois [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Schaumburg, Illinois [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,007 |  |  |
Buildings and Improvements | 22,340 |  |  |
Total | 27,347 |  |  |
Accumulated Depreciation and Amortization | $ 3,247 |  |  |
Office Building [Member] | Schaumburg, Illinois [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Schaumburg, Illinois [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Office Building [Member] | Schaumburg, Illinois [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Schaumburg, Illinois [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Columbus, Indiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 20,986 |  |  |
Land and Land Estates | 235 |  |  |
Buildings and Improvements | 45,729 |  |  |
Total | 45,964 |  |  |
Accumulated Depreciation and Amortization | $ 17,497 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Fishers, Indiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,808 |  |  |
Buildings and Improvements | 19,373 |  |  |
Total | 22,181 |  |  |
Accumulated Depreciation and Amortization | $ 5,831 |  |  |
Office Building [Member] | Fishers, Indiana [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Fishers, Indiana [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Indianapolis, Indiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,700 |  |  |
Buildings and Improvements | 18,491 |  |  |
Total | 20,191 |  |  |
Accumulated Depreciation and Amortization | $ 12,977 |  |  |
Office Building [Member] | Indianapolis, Indiana [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Indianapolis, Indiana [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Indianapolis, Indiana [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 9,463 |  |  |
Land and Land Estates | 2,828 |  |  |
Buildings and Improvements | 6,075 |  |  |
Total | 8,903 |  |  |
Accumulated Depreciation and Amortization | $ 961 |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 37 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 36,666 |  |  |
Land and Land Estates | 6,909 |  |  |
Buildings and Improvements | 41,684 |  |  |
Total | 48,593 |  |  |
Accumulated Depreciation and Amortization | $ 11,083 |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Lexena, Kansas [Member] | Lenexa, KS Office Acquired Jul-08 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Overland Park, Kansas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 34,134 |  |  |
Land and Land Estates | 4,769 |  |  |
Buildings and Improvements | 41,956 |  |  |
Total | 46,725 |  |  |
Accumulated Depreciation and Amortization | $ 12,979 |  |  |
Office Building [Member] | Overland Park, Kansas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Overland Park, Kansas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Baton Rouge, Louisiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,252 |  |  |
Buildings and Improvements | 11,085 |  |  |
Total | 12,337 |  |  |
Accumulated Depreciation and Amortization | $ 3,889 |  |  |
Office Building [Member] | Baton Rouge, Louisiana [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Baton Rouge, Louisiana [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Baton Rouge, Louisiana [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Baton Rouge, Louisiana [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Boston, Massachusetts [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 12,302 |  |  |
Land and Land Estates | 3,814 |  |  |
Buildings and Improvements | 16,040 |  |  |
Total | 19,854 |  |  |
Accumulated Depreciation and Amortization | $ 3,653 |  |  |
Office Building [Member] | Boston, Massachusetts [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Boston, Massachusetts [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Oakland, Maine [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 8,850 |  |  |
Land and Land Estates | 551 |  |  |
Buildings and Improvements | 8,774 |  |  |
Total | 9,325 |  |  |
Accumulated Depreciation and Amortization | $ 1,201 |  |  |
Office Building [Member] | Oakland, Maine [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | Oakland, Maine [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Oakland, Maine [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Auburn Hill, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,416 |  |  |
Buildings and Improvements | 30,012 |  |  |
Total | 34,428 |  |  |
Accumulated Depreciation and Amortization | $ 1,211 |  |  |
Office Building [Member] | Auburn Hill, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Auburn Hill, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Auburn Hill, Michigan [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Livonia, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 935 |  |  |
Buildings and Improvements | 13,714 |  |  |
Total | 14,649 |  |  |
Accumulated Depreciation and Amortization | $ 2,256 |  |  |
Office Building [Member] | Livonia, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Office Building [Member] | Livonia, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Office Building [Member] | Kansas City, Missouri [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 16,271 |  |  |
Land and Land Estates | 2,433 |  |  |
Buildings and Improvements | 20,154 |  |  |
Total | 22,587 |  |  |
Accumulated Depreciation and Amortization | $ 6,215 |  |  |
Office Building [Member] | Kansas City, Missouri [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Kansas City, Missouri [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Saint Joseph, Missouri [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 607 |  |  |
Buildings and Improvements | 14,004 |  |  |
Total | 14,611 |  |  |
Accumulated Depreciation and Amortization | $ 1,472 |  |  |
Office Building [Member] | Saint Joseph, Missouri [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Saint Joseph, Missouri [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Pascagoula, Mississippi [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 618 |  |  |
Buildings and Improvements | 3,677 |  |  |
Total | 4,295 |  |  |
Accumulated Depreciation and Amortization | $ 587 |  |  |
Office Building [Member] | Pascagoula, Mississippi [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Office Building [Member] | Pascagoula, Mississippi [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 31 years |  |  |
Office Building [Member] | Pascagoula, Mississippi [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Nov-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,608 |  |  |
Land and Land Estates | 2,566 |  |  |
Buildings and Improvements | 8,324 |  |  |
Total | 10,890 |  |  |
Accumulated Depreciation and Amortization | $ 2,564 |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Nov-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Nov-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Dec-13 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,058 |  |  |
Buildings and Improvements | 32,343 |  |  |
Total | 34,401 |  |  |
Accumulated Depreciation and Amortization | $ 1,928 |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Dec-13 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Omaha, Nebraska [Member] | Omaha, NE Office Acquired Dec-13 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Rockaway, New Jersey [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,646 |  |  |
Buildings and Improvements | 23,143 |  |  |
Total | 27,789 |  |  |
Accumulated Depreciation and Amortization | $ 5,695 |  |  |
Office Building [Member] | Rockaway, New Jersey [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Rockaway, New Jersey [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Rockaway, New Jersey [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Wall, New Jersey [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 17,536 |  |  |
Land and Land Estates | 8,985 |  |  |
Buildings and Improvements | 26,961 |  |  |
Total | 35,946 |  |  |
Accumulated Depreciation and Amortization | $ 12,569 |  |  |
Office Building [Member] | Wall, New Jersey [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 22 years |  |  |
Office Building [Member] | Wall, New Jersey [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Whippany, New Jersey [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 13,700 |  |  |
Land and Land Estates | 4,063 |  |  |
Buildings and Improvements | 19,711 |  |  |
Total | 23,774 |  |  |
Accumulated Depreciation and Amortization | $ 7,397 |  |  |
Office Building [Member] | Whippany, New Jersey [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Whippany, New Jersey [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Las Vegas, Nevada [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 12,099 |  |  |
Buildings and Improvements | 53,164 |  |  |
Total | 65,263 |  |  |
Accumulated Depreciation and Amortization | $ 12,229 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Columbus, Ohio [Member] | Columbus, OH Office Acquired Dec-10 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,594 |  |  |
Buildings and Improvements | 10,481 |  |  |
Total | 12,075 |  |  |
Accumulated Depreciation and Amortization | $ 1,310 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Columbus, Ohio [Member] | Columbus, OH Office Acquired Jul-11 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 432 |  |  |
Buildings and Improvements | 2,773 |  |  |
Total | 3,205 |  |  |
Accumulated Depreciation and Amortization | $ 312 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Milford, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,124 |  |  |
Buildings and Improvements | 16,140 |  |  |
Total | 19,264 |  |  |
Accumulated Depreciation and Amortization | $ 5,755 |  |  |
Office Building [Member] | Milford, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Milford, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Westerville, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,085 |  |  |
Buildings and Improvements | 9,411 |  |  |
Total | 11,496 |  |  |
Accumulated Depreciation and Amortization | $ 2,853 |  |  |
Office Building [Member] | Westerville, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Westerville, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Eugene, Oregon [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,541 |  |  |
Buildings and Improvements | 13,098 |  |  |
Total | 14,639 |  |  |
Accumulated Depreciation and Amortization | $ 1,374 |  |  |
Office Building [Member] | Eugene, Oregon [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Eugene, Oregon [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Eugene, Oregon [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Eugene, Oregon [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Eugene, Oregon [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Redmond, Oregon [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,064 |  |  |
Buildings and Improvements | 8,316 |  |  |
Total | 10,380 |  |  |
Accumulated Depreciation and Amortization | $ 1,196 |  |  |
Office Building [Member] | Redmond, Oregon [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Redmond, Oregon [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Redmond, Oregon [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 900 |  |  |
Buildings and Improvements | 11,310 |  |  |
Total | 12,210 |  |  |
Accumulated Depreciation and Amortization | $ 7,924 |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Harrisburg, Pennsylvania [Member] | Asset Component 5 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Jessup, Pennsylvania [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,520 |  |  |
Buildings and Improvements | 17,678 |  |  |
Total | 20,198 |  |  |
Accumulated Depreciation and Amortization | $ 2,391 |  |  |
Office Building [Member] | Jessup, Pennsylvania [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Jessup, Pennsylvania [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Jessup, Pennsylvania [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Philadelphia, Pennsylvania [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 13,209 |  |  |
Buildings and Improvements | 56,520 |  |  |
Total | 69,729 |  |  |
Accumulated Depreciation and Amortization | $ 32,966 |  |  |
Office Building [Member] | Philadelphia, Pennsylvania [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Philadelphia, Pennsylvania [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Charleston, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,185 |  |  |
Land and Land Estates | 1,189 |  |  |
Buildings and Improvements | 8,724 |  |  |
Total | 9,913 |  |  |
Accumulated Depreciation and Amortization | $ 3,467 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Florence, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 774 |  |  |
Buildings and Improvements | 3,629 |  |  |
Total | 4,403 |  |  |
Accumulated Depreciation and Amortization | $ 412 |  |  |
Office Building [Member] | Florence, South Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Florence, South Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Dec-02 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,601 |  |  |
Buildings and Improvements | 15,340 |  |  |
Total | 18,941 |  |  |
Accumulated Depreciation and Amortization | $ 4,953 |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Dec-02 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Dec-02 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Dec-02 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Dec-02 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Nov-04 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,798 |  |  |
Buildings and Improvements | 26,038 |  |  |
Total | 27,836 |  |  |
Accumulated Depreciation and Amortization | $ 15,322 |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Nov-04 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Nov-04 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Fort Mill, South Carolina [Member] | Fort Mill, SC Office, Acquired Nov-04 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Rock Hill, South Carolina [Member] | Rock Hill, SC Office Acquired May-11 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 551 |  |  |
Buildings and Improvements | 4,313 |  |  |
Total | 4,864 |  |  |
Accumulated Depreciation and Amortization | $ 503 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Rock Hill, South Carolina [Member] | Rock Hill, SC Office Acquired Mar-14 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,601 |  |  |
Buildings and Improvements | 21,000 |  |  |
Total | 22,601 |  |  |
Accumulated Depreciation and Amortization | $ 1,053 |  |  |
Office Building [Member] | Rock Hill, South Carolina [Member] | Rock Hill, SC Office Acquired Mar-14 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 18 years |  |  |
Office Building [Member] | Rock Hill, South Carolina [Member] | Rock Hill, SC Office Acquired Mar-14 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Rock Hill, South Carolina [Member] | Rock Hill, SC Office Acquired Mar-14 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Kingsport, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 513 |  |  |
Buildings and Improvements | 403 |  |  |
Total | 916 |  |  |
Accumulated Depreciation and Amortization | $ 155 |  |  |
Office Building [Member] | Kingsport, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Kingsport, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Kingsport, Tennessee [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,079 |  |  |
Buildings and Improvements | 11,351 |  |  |
Total | 12,430 |  |  |
Accumulated Depreciation and Amortization | $ 6,248 |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Mar-05 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 621 |  |  |
Buildings and Improvements | 6,282 |  |  |
Total | 6,903 |  |  |
Accumulated Depreciation and Amortization | $ 925 |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Knoxville, Tennessee [Member] | Knoxville, TN Office Acquired Sep-12 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Nov-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 3,555 |  |  |
Land and Land Estates | 467 |  |  |
Buildings and Improvements | 4,467 |  |  |
Total | 4,934 |  |  |
Accumulated Depreciation and Amortization | $ 1,681 |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Nov-06 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Nov-06 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,291 |  |  |
Buildings and Improvements | 97,032 |  |  |
Total | 102,323 |  |  |
Accumulated Depreciation and Amortization | $ 22,742 |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Dec-06 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Memphis, Tennessee [Member] | Memphis, TN Office Acquired Dec-06 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Allen, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,591 |  |  |
Buildings and Improvements | 25,421 |  |  |
Total | 31,012 |  |  |
Accumulated Depreciation and Amortization | $ 7,195 |  |  |
Office Building [Member] | Allen, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Allen, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Allen, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Allen, Texas [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Arlington, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,274 |  |  |
Buildings and Improvements | 15,309 |  |  |
Total | 16,583 |  |  |
Accumulated Depreciation and Amortization | $ 1,961 |  |  |
Office Building [Member] | Arlington, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Office Building [Member] | Arlington, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Arlington, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Arlington, Texas [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-04 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,789 |  |  |
Buildings and Improvements | 18,157 |  |  |
Total | 19,946 |  |  |
Accumulated Depreciation and Amortization | $ 8,645 |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-04 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 19 years |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-04 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,599 |  |  |
Buildings and Improvements | 22,050 |  |  |
Total | 24,649 |  |  |
Accumulated Depreciation and Amortization | $ 7,893 |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-07 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-07 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Carrollton, Texas [Member] | Carrollton, TX Office Acquired Jun-07, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 828 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 828 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Office Building [Member] | Farmers Branch, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 18,380 |  |  |
Land and Land Estates | 3,984 |  |  |
Buildings and Improvements | 27,308 |  |  |
Total | 31,292 |  |  |
Accumulated Depreciation and Amortization | $ 10,137 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Garland, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,161 |  |  |
Buildings and Improvements | 833 |  |  |
Total | 1,994 |  |  |
Accumulated Depreciation and Amortization | $ 0 |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,875 |  |  |
Buildings and Improvements | 10,675 |  |  |
Total | 12,550 |  |  |
Accumulated Depreciation and Amortization | $ 6,745 |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,875 |  |  |
Buildings and Improvements | 10,959 |  |  |
Total | 12,834 |  |  |
Accumulated Depreciation and Amortization | $ 6,824 |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 2 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 2 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 2 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 2 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Mar-04 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 16,613 |  |  |
Buildings and Improvements | 63,770 |  |  |
Total | 80,383 |  |  |
Accumulated Depreciation and Amortization | $ 15,753 |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Mar-04 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Mar-04 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 800 |  |  |
Buildings and Improvements | 26,962 |  |  |
Total | 27,762 |  |  |
Accumulated Depreciation and Amortization | $ 18,618 |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 3 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 3 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 3 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Apr-05, Property 3 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Dec-13 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 481 |  |  |
Buildings and Improvements | 2,352 |  |  |
Total | 2,833 |  |  |
Accumulated Depreciation and Amortization | $ 187 |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Dec-13 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Dec-13 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 31 years |  |  |
Office Building [Member] | Houston, Texas [Member] | Houston, TX Office Acquired Dec-13 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired Jun-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,889 |  |  |
Buildings and Improvements | 29,738 |  |  |
Total | 34,627 |  |  |
Accumulated Depreciation and Amortization | $ 10,532 |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired Jun-07 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired Jun-07 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired Jun-07 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired May-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 7,476 |  |  |
Buildings and Improvements | 45,985 |  |  |
Total | 53,461 |  |  |
Accumulated Depreciation and Amortization | $ 17,532 |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired May-07 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Irving, Texas [Member] | Irving, TX Office Acquired May-07 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Mission, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,556 |  |  |
Buildings and Improvements | 2,911 |  |  |
Total | 5,467 |  |  |
Accumulated Depreciation and Amortization | $ 635 |  |  |
Office Building [Member] | Mission, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Mission, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 35 years |  |  |
Office Building [Member] | Mission, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Office Building [Member] | San Antonio, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,800 |  |  |
Buildings and Improvements | 15,619 |  |  |
Total | 18,419 |  |  |
Accumulated Depreciation and Amortization | $ 11,534 |  |  |
Office Building [Member] | San Antonio, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | San Antonio, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | San Antonio, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | San Antonio, Texas [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Office Building [Member] | Temple, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,463 |  |  |
Land and Land Estates | 227 |  |  |
Buildings and Improvements | 8,181 |  |  |
Total | 8,408 |  |  |
Accumulated Depreciation and Amortization | $ 1,462 |  |  |
Office Building [Member] | Temple, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Office Building [Member] | Temple, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Temple, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Temple, Texas [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Office Building [Member] | Westlake, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,361 |  |  |
Buildings and Improvements | 23,572 |  |  |
Total | 25,933 |  |  |
Accumulated Depreciation and Amortization | $ 9,510 |  |  |
Office Building [Member] | Westlake, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Westlake, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Hampton, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,333 |  |  |
Buildings and Improvements | 11,354 |  |  |
Total | 13,687 |  |  |
Accumulated Depreciation and Amortization | $ 4,463 |  |  |
Office Building [Member] | Hampton, Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Office Building [Member] | Hampton, Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Hampton, Virginia [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Office Building [Member] | Hampton, Virginia [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Hampton, Virginia [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Dec-99 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,127 |  |  |
Buildings and Improvements | 24,640 |  |  |
Total | 29,767 |  |  |
Accumulated Depreciation and Amortization | $ 9,215 |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Dec-99 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Dec-99 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Jun-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 9,409 |  |  |
Buildings and Improvements | 14,477 |  |  |
Total | 23,886 |  |  |
Accumulated Depreciation and Amortization | $ 5,056 |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Jun-07 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Jun-07 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Herndon, Virginia [Member] | Herndon, VA Office Acquired Jun-07 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Midlothian, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,100 |  |  |
Buildings and Improvements | 12,685 |  |  |
Total | 13,785 |  |  |
Accumulated Depreciation and Amortization | $ 7,073 |  |  |
Office Building [Member] | Midlothian, Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Office Building [Member] | Midlothian, Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Midlothian, Virginia [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Office Building [Member] | Midlothian, Virginia [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Office Building [Member] | Richmond, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 7,331 |  |  |
Buildings and Improvements | 88,021 |  |  |
Total | 95,352 |  |  |
Accumulated Depreciation and Amortization | $ 345 |  |  |
Office Building [Member] | Richmond, Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Office Building [Member] | Richmond, Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Office Building [Member] | Richmond, Virginia [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Bremerton, Washington [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 5,534 |  |  |
Land and Land Estates | 1,655 |  |  |
Buildings and Improvements | 5,445 |  |  |
Total | 7,100 |  |  |
Accumulated Depreciation and Amortization | $ 917 |  |  |
Office Building [Member] | Bremerton, Washington [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Office Building [Member] | Bremerton, Washington [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Office Building [Member] | Bremerton, Washington [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Office Building [Member] | Huntington, West Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 6,500 |  |  |
Land and Land Estates | 1,368 |  |  |
Buildings and Improvements | 9,527 |  |  |
Total | 10,895 |  |  |
Accumulated Depreciation and Amortization | $ 1,270 |  |  |
Office Building [Member] | Huntington, West Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Office Building [Member] | Huntington, West Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Orlando, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,030 |  |  |
Buildings and Improvements | 10,869 |  |  |
Total | 11,899 |  |  |
Accumulated Depreciation and Amortization | $ 2,758 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Tampa, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,160 |  |  |
Buildings and Improvements | 8,431 |  |  |
Total | 10,591 |  |  |
Accumulated Depreciation and Amortization | $ 5,905 |  |  |
Industrial Property [Member] | Tampa, Florida [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Tampa, Florida [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | McDonough, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 22,224 |  |  |
Land and Land Estates | 2,463 |  |  |
Buildings and Improvements | 24,291 |  |  |
Total | 26,754 |  |  |
Accumulated Depreciation and Amortization | $ 5,859 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Columbus, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,990 |  |  |
Buildings and Improvements | 10,580 |  |  |
Total | 12,570 |  |  |
Accumulated Depreciation and Amortization | $ 3,131 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Memphis, Tennessee [Member] | Memphis, TN Industrial Acquired Feb-88 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,054 |  |  |
Buildings and Improvements | 11,538 |  |  |
Total | 12,592 |  |  |
Accumulated Depreciation and Amortization | $ 11,414 |  |  |
Industrial Property [Member] | Memphis, Tennessee [Member] | Memphis, TN Industrial Acquired Feb-88 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Memphis, Tennessee [Member] | Memphis, TN Industrial Acquired Feb-88 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Memphis, Tennessee [Member] | Memphis, TN Industrial Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,553 |  |  |
Buildings and Improvements | 12,326 |  |  |
Total | 13,879 |  |  |
Accumulated Depreciation and Amortization | $ 3,412 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Houston, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,674 |  |  |
Buildings and Improvements | 19,540 |  |  |
Total | 24,214 |  |  |
Accumulated Depreciation and Amortization | $ 1,603 |  |  |
Industrial Property [Member] | Houston, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Houston, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Houston, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Anniston, Alabama [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,201 |  |  |
Buildings and Improvements | 16,771 |  |  |
Total | 17,972 |  |  |
Accumulated Depreciation and Amortization | $ 790 |  |  |
Industrial Property [Member] | Anniston, Alabama [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Anniston, Alabama [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 24 years |  |  |
Industrial Property [Member] | Anniston, Alabama [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Moody, Alabama [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 654 |  |  |
Buildings and Improvements | 9,943 |  |  |
Total | 10,597 |  |  |
Accumulated Depreciation and Amortization | $ 6,205 |  |  |
Industrial Property [Member] | Moody, Alabama [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Moody, Alabama [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Lavonia, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,676 |  |  |
Land and Land Estates | 171 |  |  |
Buildings and Improvements | 7,657 |  |  |
Total | 7,828 |  |  |
Accumulated Depreciation and Amortization | $ 722 |  |  |
Industrial Property [Member] | Lavonia, Georgia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Lavonia, Georgia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Lavonia, Georgia [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Thomson, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 909 |  |  |
Buildings and Improvements | 7,746 |  |  |
Total | 8,655 |  |  |
Accumulated Depreciation and Amortization | $ 249 |  |  |
Industrial Property [Member] | Thomson, Georgia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Thomson, Georgia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Thomson, Georgia [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Des Moines, Iowa [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,528 |  |  |
Buildings and Improvements | 14,247 |  |  |
Total | 15,775 |  |  |
Accumulated Depreciation and Amortization | $ 1,953 |  |  |
Industrial Property [Member] | Des Moines, Iowa [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Des Moines, Iowa [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Industrial Property [Member] | Des Moines, Iowa [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Industrial Property [Member] | Dubuque, Iowa [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 9,055 |  |  |
Land and Land Estates | 2,052 |  |  |
Buildings and Improvements | 8,443 |  |  |
Total | 10,495 |  |  |
Accumulated Depreciation and Amortization | $ 2,755 |  |  |
Industrial Property [Member] | Dubuque, Iowa [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Industrial Property [Member] | Dubuque, Iowa [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Dubuque, Iowa [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Rantoul, Illinois [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,304 |  |  |
Buildings and Improvements | 32,562 |  |  |
Total | 33,866 |  |  |
Accumulated Depreciation and Amortization | $ 1,789 |  |  |
Industrial Property [Member] | Rantoul, Illinois [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Rantoul, Illinois [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Rantoul, Illinois [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 21 years |  |  |
Industrial Property [Member] | Rockford, Illinois [Member] | Rockford, IL Industrial Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 371 |  |  |
Buildings and Improvements | 2,573 |  |  |
Total | 2,944 |  |  |
Accumulated Depreciation and Amortization | $ 666 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Rockford, Illinois [Member] | Rockford, IL Industrial Acquired Dec-06, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 509 |  |  |
Buildings and Improvements | 5,289 |  |  |
Total | 5,798 |  |  |
Accumulated Depreciation and Amortization | $ 1,305 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 5,807 |  |  |
Land and Land Estates | 254 |  |  |
Buildings and Improvements | 8,110 |  |  |
Total | 8,364 |  |  |
Accumulated Depreciation and Amortization | $ 971 |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Plymouth, Indiana [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Dry Ridge, Kentucky [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 560 |  |  |
Buildings and Improvements | 12,553 |  |  |
Total | 13,113 |  |  |
Accumulated Depreciation and Amortization | $ 4,580 |  |  |
Industrial Property [Member] | Dry Ridge, Kentucky [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 22 years |  |  |
Industrial Property [Member] | Dry Ridge, Kentucky [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 352 |  |  |
Buildings and Improvements | 4,862 |  |  |
Total | 5,214 |  |  |
Accumulated Depreciation and Amortization | $ 1,774 |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 890 |  |  |
Buildings and Improvements | 26,868 |  |  |
Total | 27,758 |  |  |
Accumulated Depreciation and Amortization | $ 9,804 |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05, Property 2 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Elizabethtown, Kentucky [Member] | Elizabethtown, Kentucky Industrial Acquired Jun-05, Property 2 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Hopkinsville, Kentucky [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 631 |  |  |
Buildings and Improvements | 16,154 |  |  |
Total | 16,785 |  |  |
Accumulated Depreciation and Amortization | $ 6,234 |  |  |
Industrial Property [Member] | Hopkinsville, Kentucky [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Hopkinsville, Kentucky [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Owensboro, Kentucky [Member] | Owensboro, KY Industrial Acquired Jun-05 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 393 |  |  |
Buildings and Improvements | 11,956 |  |  |
Total | 12,349 |  |  |
Accumulated Depreciation and Amortization | $ 4,984 |  |  |
Industrial Property [Member] | Owensboro, Kentucky [Member] | Owensboro, KY Industrial Acquired Jun-05 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Owensboro, Kentucky [Member] | Owensboro, KY Industrial Acquired Jun-05 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Owensboro, Kentucky [Member] | Owensboro, KY Industrial Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 819 |  |  |
Buildings and Improvements | 2,439 |  |  |
Total | 3,258 |  |  |
Accumulated Depreciation and Amortization | $ 860 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Shreveport, Louisiana [Member] | Shreveport, LA Industrial Acquired Mar-07 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 19,000 |  |  |
Land and Land Estates | 860 |  |  |
Buildings and Improvements | 21,840 |  |  |
Total | 22,700 |  |  |
Accumulated Depreciation and Amortization | $ 4,800 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Shreveport, Louisiana [Member] | Shreveport, LA Industrial Acquired Jun-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,078 |  |  |
Buildings and Improvements | 10,134 |  |  |
Total | 11,212 |  |  |
Accumulated Depreciation and Amortization | $ 1,305 |  |  |
Industrial Property [Member] | Shreveport, Louisiana [Member] | Shreveport, LA Industrial Acquired Jun-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Shreveport, Louisiana [Member] | Shreveport, LA Industrial Acquired Jun-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Shreveport, Louisiana [Member] | Shreveport, LA Industrial Acquired Jun-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | North Berwick, Maine [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 4,810 |  |  |
Land and Land Estates | 1,383 |  |  |
Buildings and Improvements | 35,659 |  |  |
Total | 37,042 |  |  |
Accumulated Depreciation and Amortization | $ 7,713 |  |  |
Industrial Property [Member] | North Berwick, Maine [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | North Berwick, Maine [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | North Berwick, Maine [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Kalamazoo, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,942 |  |  |
Buildings and Improvements | 14,169 |  |  |
Total | 16,111 |  |  |
Accumulated Depreciation and Amortization | $ 1,898 |  |  |
Industrial Property [Member] | Kalamazoo, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Kalamazoo, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Kalamazoo, Michigan [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 40 |  |  |
Buildings and Improvements | 2,236 |  |  |
Total | 2,276 |  |  |
Accumulated Depreciation and Amortization | $ 854 |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Aug-87 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Sep-12 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 143 |  |  |
Buildings and Improvements | 4,302 |  |  |
Total | 4,445 |  |  |
Accumulated Depreciation and Amortization | $ 1,575 |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Sep-12 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Sep-12 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Marshall, Michigan [Member] | Marshall, MI Industrial Acquired Sep-12 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Industrial Property [Member] | Plymouth, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,296 |  |  |
Buildings and Improvements | 13,608 |  |  |
Total | 15,904 |  |  |
Accumulated Depreciation and Amortization | $ 5,124 |  |  |
Industrial Property [Member] | Plymouth, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Industrial Property [Member] | Plymouth, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Temperance, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,040 |  |  |
Buildings and Improvements | 14,924 |  |  |
Total | 17,964 |  |  |
Accumulated Depreciation and Amortization | $ 4,139 |  |  |
Industrial Property [Member] | Temperance, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Industrial Property [Member] | Temperance, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Temperance, Michigan [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Minneapolis, Minnesota [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,886 |  |  |
Buildings and Improvements | 1,922 |  |  |
Total | 3,808 |  |  |
Accumulated Depreciation and Amortization | $ 204 |  |  |
Industrial Property [Member] | Minneapolis, Minnesota [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Industrial Property [Member] | Minneapolis, Minnesota [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Minneapolis, Minnesota [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 29 years |  |  |
Industrial Property [Member] | Byhalia, Mississippi [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 15,000 |  |  |
Land and Land Estates | 1,006 |  |  |
Buildings and Improvements | 35,825 |  |  |
Total | 36,831 |  |  |
Accumulated Depreciation and Amortization | $ 2,912 |  |  |
Industrial Property [Member] | Byhalia, Mississippi [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Byhalia, Mississippi [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Canton, Mississippi [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,077 |  |  |
Buildings and Improvements | 71,289 |  |  |
Total | 76,366 |  |  |
Accumulated Depreciation and Amortization | $ 2,590 |  |  |
Industrial Property [Member] | Canton, Mississippi [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Canton, Mississippi [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 51 years |  |  |
Industrial Property [Member] | Canton, Mississippi [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Canton, Mississippi [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Olive Branch, Mississippi [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 198 |  |  |
Buildings and Improvements | 10,276 |  |  |
Total | 10,474 |  |  |
Accumulated Depreciation and Amortization | $ 6,771 |  |  |
Industrial Property [Member] | Olive Branch, Mississippi [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Olive Branch, Mississippi [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Olive Branch, Mississippi [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Franklin, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 296 |  |  |
Buildings and Improvements | 1,320 |  |  |
Total | 1,616 |  |  |
Accumulated Depreciation and Amortization | $ 211 |  |  |
Industrial Property [Member] | Franklin, North Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Industrial Property [Member] | Franklin, North Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 29 years |  |  |
Industrial Property [Member] | Franklin, North Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Henderson, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,488 |  |  |
Buildings and Improvements | 5,953 |  |  |
Total | 7,441 |  |  |
Accumulated Depreciation and Amortization | $ 2,102 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | High Point, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,330 |  |  |
Buildings and Improvements | 11,183 |  |  |
Total | 12,513 |  |  |
Accumulated Depreciation and Amortization | $ 5,688 |  |  |
Industrial Property [Member] | High Point, North Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 18 years |  |  |
Industrial Property [Member] | High Point, North Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Lumberton, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 405 |  |  |
Buildings and Improvements | 12,049 |  |  |
Total | 12,454 |  |  |
Accumulated Depreciation and Amortization | $ 3,488 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Shelby, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,421 |  |  |
Buildings and Improvements | 18,862 |  |  |
Total | 20,283 |  |  |
Accumulated Depreciation and Amortization | $ 3,180 |  |  |
Industrial Property [Member] | Shelby, North Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Industrial Property [Member] | Shelby, North Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Shelby, North Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Statesville, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 891 |  |  |
Buildings and Improvements | 16,771 |  |  |
Total | 17,662 |  |  |
Accumulated Depreciation and Amortization | $ 4,561 |  |  |
Industrial Property [Member] | Statesville, North Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Industrial Property [Member] | Statesville, North Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Statesville, North Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Durham, New Hampshire [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,464 |  |  |
Buildings and Improvements | 18,094 |  |  |
Total | 21,558 |  |  |
Accumulated Depreciation and Amortization | $ 5,320 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Erwin, New York [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 7,887 |  |  |
Land and Land Estates | 1,648 |  |  |
Buildings and Improvements | 12,355 |  |  |
Total | 14,003 |  |  |
Accumulated Depreciation and Amortization | $ 1,371 |  |  |
Industrial Property [Member] | Erwin, New York [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Industrial Property [Member] | Erwin, New York [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Industrial Property [Member] | Erwin, New York [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Industrial Property [Member] | Erwin, New York [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Long Island City, New York [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 49,144 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 42,624 |  |  |
Total | 42,624 |  |  |
Accumulated Depreciation and Amortization | $ 8,042 |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | North Las Vegas, Nevada [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,244 |  |  |
Buildings and Improvements | 21,732 |  |  |
Total | 24,976 |  |  |
Accumulated Depreciation and Amortization | $ 1,053 |  |  |
Industrial Property [Member] | North Las Vegas, Nevada [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 19 years |  |  |
Industrial Property [Member] | North Las Vegas, Nevada [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | North Las Vegas, Nevada [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Chillicothe, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 735 |  |  |
Buildings and Improvements | 9,021 |  |  |
Total | 9,756 |  |  |
Accumulated Depreciation and Amortization | $ 1,886 |  |  |
Industrial Property [Member] | Chillicothe, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 6 years |  |  |
Industrial Property [Member] | Chillicothe, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 26 years |  |  |
Industrial Property [Member] | Chillicothe, Ohio [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Cincinnati, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,049 |  |  |
Buildings and Improvements | 8,784 |  |  |
Total | 9,833 |  |  |
Accumulated Depreciation and Amortization | $ 2,174 |  |  |
Industrial Property [Member] | Cincinnati, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Cincinnati, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Cincinnati, Ohio [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Industrial Property [Member] | Glenwillow, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 15,326 |  |  |
Land and Land Estates | 2,228 |  |  |
Buildings and Improvements | 24,530 |  |  |
Total | 26,758 |  |  |
Accumulated Depreciation and Amortization | $ 5,979 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-97 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,063 |  |  |
Buildings and Improvements | 4,581 |  |  |
Total | 5,644 |  |  |
Accumulated Depreciation and Amortization | $ 1,516 |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-97 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-97 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-97 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,681 |  |  |
Buildings and Improvements | 7,854 |  |  |
Total | 9,535 |  |  |
Accumulated Depreciation and Amortization | $ 2,857 |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Asset Component 4 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Hebron, Ohio [Member] | Hebron, OH Industrial, Acquired Dec-01 [Member] | Asset Component 5 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Industrial Property [Member] | Streetsboro, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 17,626 |  |  |
Land and Land Estates | 2,441 |  |  |
Buildings and Improvements | 25,092 |  |  |
Total | 27,533 |  |  |
Accumulated Depreciation and Amortization | $ 7,238 |  |  |
Industrial Property [Member] | Streetsboro, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Streetsboro, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Streetsboro, Ohio [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Streetsboro, Ohio [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Bristol, Pennsylvania [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,508 |  |  |
Buildings and Improvements | 15,863 |  |  |
Total | 18,371 |  |  |
Accumulated Depreciation and Amortization | $ 6,020 |  |  |
Industrial Property [Member] | Bristol, Pennsylvania [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Bristol, Pennsylvania [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Bristol, Pennsylvania [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Industrial Property [Member] | Bristol, Pennsylvania [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 30 years |  |  |
Industrial Property [Member] | Chester, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 8,738 |  |  |
Land and Land Estates | 1,629 |  |  |
Buildings and Improvements | 8,470 |  |  |
Total | 10,099 |  |  |
Accumulated Depreciation and Amortization | $ 1,031 |  |  |
Industrial Property [Member] | Chester, South Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Chester, South Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Industrial Property [Member] | Chester, South Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Industrial Property [Member] | Duncan, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 884 |  |  |
Buildings and Improvements | 8,626 |  |  |
Total | 9,510 |  |  |
Accumulated Depreciation and Amortization | $ 1,945 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 5,552 |  |  |
Buildings and Improvements | 21,559 |  |  |
Total | 27,111 |  |  |
Accumulated Depreciation and Amortization | $ 5,980 |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Laurens, South Carolina [Member] | Asset Component 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Collierville, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 714 |  |  |
Buildings and Improvements | 4,783 |  |  |
Total | 5,497 |  |  |
Accumulated Depreciation and Amortization | $ 1,951 |  |  |
Industrial Property [Member] | Collierville, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Collierville, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Collierville, Tennessee [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Industrial Property [Member] | Collierville, Tennessee [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 21 years |  |  |
Industrial Property [Member] | Crossville, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 545 |  |  |
Buildings and Improvements | 6,999 |  |  |
Total | 7,544 |  |  |
Accumulated Depreciation and Amortization | $ 3,512 |  |  |
Industrial Property [Member] | Crossville, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 17 years |  |  |
Industrial Property [Member] | Crossville, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Franklin, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 5,673 |  |  |
Total | 5,673 |  |  |
Accumulated Depreciation and Amortization | $ 1,659 |  |  |
Industrial Property [Member] | Franklin, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Industrial Property [Member] | Franklin, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Franklin, Tennessee [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Industrial Property [Member] | Lewisburg, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 173 |  |  |
Buildings and Improvements | 10,865 |  |  |
Total | 11,038 |  |  |
Accumulated Depreciation and Amortization | $ 565 |  |  |
Industrial Property [Member] | Lewisburg, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Industrial Property [Member] | Lewisburg, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 34 years |  |  |
Industrial Property [Member] | Lewisburg, Tennessee [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 18 years |  |  |
Industrial Property [Member] | Millington, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 723 |  |  |
Buildings and Improvements | 19,383 |  |  |
Total | 20,106 |  |  |
Accumulated Depreciation and Amortization | $ 10,163 |  |  |
Industrial Property [Member] | Millington, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 9 years |  |  |
Industrial Property [Member] | Millington, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Millington, Tennessee [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Millington, Tennessee [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Industrial Property [Member] | Brookshire, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,388 |  |  |
Buildings and Improvements | 16,614 |  |  |
Total | 19,002 |  |  |
Accumulated Depreciation and Amortization | $ 583 |  |  |
Industrial Property [Member] | Brookshire, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Industrial Property [Member] | Brookshire, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Brookshire, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Waxahachie, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 652 |  |  |
Buildings and Improvements | 13,045 |  |  |
Total | 13,697 |  |  |
Accumulated Depreciation and Amortization | $ 9,926 |  |  |
Industrial Property [Member] | Waxahachie, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Waxahachie, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Waxahachie, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Industrial Property [Member] | Winchester, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,823 |  |  |
Buildings and Improvements | 12,276 |  |  |
Total | 16,099 |  |  |
Accumulated Depreciation and Amortization | $ 3,396 |  |  |
Industrial Property [Member] | Winchester, Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 4 years |  |  |
Industrial Property [Member] | Winchester, Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Bingen, Washington [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 18,075 |  |  |
Total | 18,075 |  |  |
Accumulated Depreciation and Amortization | $ 1,475 |  |  |
Industrial Property [Member] | Bingen, Washington [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Bingen, Washington [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Industrial Property [Member] | Bingen, Washington [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Industrial Property [Member] | Richland, Washington [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 110,000 |  |  |
Land and Land Estates | 1,293 |  |  |
Buildings and Improvements | 126,947 |  |  |
Total | 128,240 |  |  |
Accumulated Depreciation and Amortization | $ 876 |  |  |
Industrial Property [Member] | Richland, Washington [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Richland, Washington [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Richland, Washington [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Industrial Property [Member] | Oak Creek, Wisconsin [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,015 |  |  |
Buildings and Improvements | 15,300 |  |  |
Total | 18,315 |  |  |
Accumulated Depreciation and Amortization | $ 287 |  |  |
Industrial Property [Member] | Oak Creek, Wisconsin [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Industrial Property [Member] | Oak Creek, Wisconsin [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Industrial Property [Member] | Oak Creek, Wisconsin [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Land / Infrastructure [Member] | Houston, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 15,055 |  |  |
Buildings and Improvements | 57,949 |  |  |
Total | 73,004 |  |  |
Accumulated Depreciation and Amortization | $ 4,960 |  |  |
Land / Infrastructure [Member] | Houston, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 11 years |  |  |
Land / Infrastructure [Member] | Houston, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 35 years |  |  |
Land / Infrastructure [Member] | Houston, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Land / Infrastructure [Member] | Houston, Texas [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Land / Infrastructure [Member] | Venice, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,696 |  |  |
Buildings and Improvements | 11,753 |  |  |
Total | 16,449 |  |  |
Accumulated Depreciation and Amortization | $ 2,123 |  |  |
Land / Infrastructure [Member] | Venice, Florida [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Land / Infrastructure [Member] | Venice, Florida [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Land / Infrastructure [Member] | Clive, Iowa [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 371 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 371 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | Baltimore, Maryland [Member] | Baltimore, MD Land/Infrastructure Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 4,605 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 4,605 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | Baltimore, Maryland [Member] | Baltimore, MD Land/Infrastructure Acquired Dec-15 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 5,000 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 5,000 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | New York, New York [Member] | New York, NY Land/Infrastructure, Acquired Oct-13 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 65,218 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 65,218 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | New York, New York [Member] | New York, NY Land/Infrastructure Acquired Oct-13, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 213,301 |  |  |
Land and Land Estates | 73,148 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 73,148 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | New York, New York [Member] | New York, NY Land/Infrastructure Acquired Oct-13, Property 3 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 86,569 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 86,569 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | New York, New York [Member] | New York, NY Land/Infrastructure Acquired Oct-14 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 29,193 |  |  |
Land and Land Estates | 22,000 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 22,000 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Land / Infrastructure [Member] | Missouri City, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 14,555 |  |  |
Buildings and Improvements | 5,895 |  |  |
Total | 20,450 |  |  |
Accumulated Depreciation and Amortization | $ 3,088 |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Land / Infrastructure [Member] | Danville, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,454 |  |  |
Buildings and Improvements | 0 |  |  |
Total | 3,454 |  |  |
Accumulated Depreciation and Amortization | 0 |  |  |
Multi-tenanted [Member] | Phoenix, Arizona [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | 0 |  |  |
Land and Land Estates | 1,831 |  |  |
Buildings and Improvements | 15,211 |  |  |
Total | 17,042 |  |  |
Accumulated Depreciation and Amortization | $ 3,502 |  |  |
Multi-tenanted [Member] | Phoenix, Arizona [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Multi-tenanted [Member] | Phoenix, Arizona [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Palm Beach Gardens, Florida [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 4,066 |  |  |
Buildings and Improvements | 21,638 |  |  |
Total | 25,704 |  |  |
Accumulated Depreciation and Amortization | $ 7,527 |  |  |
Multi-tenanted [Member] | Palm Beach Gardens, Florida [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Multi-tenanted [Member] | Palm Beach Gardens, Florida [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Florence, South Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,235 |  |  |
Buildings and Improvements | 13,141 |  |  |
Total | 16,376 |  |  |
Accumulated Depreciation and Amortization | $ 4,540 |  |  |
Multi-tenanted [Member] | Florence, South Carolina [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 10 years |  |  |
Multi-tenanted [Member] | Florence, South Carolina [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Florence, South Carolina [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Multi-tenanted [Member] | Florence, South Carolina [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 20 years |  |  |
Multi-tenanted [Member] | Arlington, Texas [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 589 |  |  |
Buildings and Improvements | 6,382 |  |  |
Total | 6,971 |  |  |
Accumulated Depreciation and Amortization | $ 830 |  |  |
Multi-tenanted [Member] | Arlington, Texas [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Multi-tenanted [Member] | Arlington, Texas [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Arlington, Texas [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Multi-tenanted [Member] | Honolulu, Hawaii [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 8,259 |  |  |
Buildings and Improvements | 7,363 |  |  |
Total | 15,622 |  |  |
Accumulated Depreciation and Amortization | $ 1,759 |  |  |
Multi-tenanted [Member] | Honolulu, Hawaii [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 2 years |  |  |
Multi-tenanted [Member] | Honolulu, Hawaii [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Honolulu, Hawaii [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Multi-tenanted [Member] | Westmont, Illinios [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 7,812 |  |  |
Buildings and Improvements | 1,178 |  |  |
Total | 8,990 |  |  |
Accumulated Depreciation and Amortization | $ 24 |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Multi-tenanted [Member] | Foxboro, Massachusetts [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,231 |  |  |
Buildings and Improvements | 25,662 |  |  |
Total | 27,893 |  |  |
Accumulated Depreciation and Amortization | $ 14,355 |  |  |
Multi-tenanted [Member] | Foxboro, Massachusetts [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 1 year |  |  |
Multi-tenanted [Member] | Foxboro, Massachusetts [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Foxboro, Massachusetts [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Multi-tenanted [Member] | Southfield, Michigan [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 15,434 |  |  |
Total | 15,434 |  |  |
Accumulated Depreciation and Amortization | $ 7,840 |  |  |
Multi-tenanted [Member] | Southfield, Michigan [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 7 years |  |  |
Multi-tenanted [Member] | Southfield, Michigan [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Southfield, Michigan [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 16 years |  |  |
Multi-tenanted [Member] | Southfield, Michigan [Member] | Asset Component 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 25 years |  |  |
Multi-tenanted [Member] | Bridgeton, Missouri [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 603 |  |  |
Buildings and Improvements | 1,271 |  |  |
Total | 1,874 |  |  |
Accumulated Depreciation and Amortization | $ 51 |  |  |
Multi-tenanted [Member] | Bridgeton, Missouri [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Multi-tenanted [Member] | Bridgeton, Missouri [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 32 years |  |  |
Multi-tenanted [Member] | Bridgewater, New Jersey [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 14,118 |  |  |
Land and Land Estates | 1,415 |  |  |
Buildings and Improvements | 6,802 |  |  |
Total | 8,217 |  |  |
Accumulated Depreciation and Amortization | $ 438 |  |  |
Multi-tenanted [Member] | Bridgewater, New Jersey [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Multi-tenanted [Member] | Bridgewater, New Jersey [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Bridgewater, New Jersey [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Multi-tenanted [Member] | Canonsburg, Pennsylvania [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,705 |  |  |
Buildings and Improvements | 10,910 |  |  |
Total | 12,615 |  |  |
Accumulated Depreciation and Amortization | $ 4,189 |  |  |
Multi-tenanted [Member] | Canonsburg, Pennsylvania [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 8 years |  |  |
Multi-tenanted [Member] | Canonsburg, Pennsylvania [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Multi-tenanted [Member] | Antioch, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,847 |  |  |
Buildings and Improvements | 12,569 |  |  |
Total | 16,416 |  |  |
Accumulated Depreciation and Amortization | $ 1,840 |  |  |
Multi-tenanted [Member] | Antioch, Tennessee [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Multi-tenanted [Member] | Antioch, Tennessee [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Manteca, California [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 834 |  |  |
Land and Land Estates | 2,082 |  |  |
Buildings and Improvements | 6,464 |  |  |
Total | 8,546 |  |  |
Accumulated Depreciation and Amortization | $ 1,680 |  |  |
Retail / Specialty [Member] | Manteca, California [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 23 years |  |  |
Retail / Specialty [Member] | Manteca, California [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | San Diego, California [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 532 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 13,310 |  |  |
Total | 13,310 |  |  |
Accumulated Depreciation and Amortization | $ 2,961 |  |  |
Retail / Specialty [Member] | San Diego, California [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 23 years |  |  |
Retail / Specialty [Member] | San Diego, California [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Albany, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,468 |  |  |
Buildings and Improvements | 5,137 |  |  |
Total | 6,605 |  |  |
Accumulated Depreciation and Amortization | $ 344 |  |  |
Retail / Specialty [Member] | Albany, Georgia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 15 years |  |  |
Retail / Specialty [Member] | Albany, Georgia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Atlanta, Georgia [Member] | Atlanta, GA Retail Acquired Dec-06 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,014 |  |  |
Buildings and Improvements | 269 |  |  |
Total | 1,283 |  |  |
Accumulated Depreciation and Amortization | $ 297 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Atlanta, Georgia [Member] | Atlanta, GA Retail Acquired Dec-06, Property 2 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 870 |  |  |
Buildings and Improvements | 187 |  |  |
Total | 1,057 |  |  |
Accumulated Depreciation and Amortization | $ 242 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Chamblee, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 770 |  |  |
Buildings and Improvements | 186 |  |  |
Total | 956 |  |  |
Accumulated Depreciation and Amortization | $ 237 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Cumming, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,558 |  |  |
Buildings and Improvements | 1,368 |  |  |
Total | 2,926 |  |  |
Accumulated Depreciation and Amortization | $ 666 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Forest Park, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 668 |  |  |
Buildings and Improvements | 1,242 |  |  |
Total | 1,910 |  |  |
Accumulated Depreciation and Amortization | $ 446 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Jonesboro, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 778 |  |  |
Buildings and Improvements | 146 |  |  |
Total | 924 |  |  |
Accumulated Depreciation and Amortization | $ 213 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Stone Mountain, Georgia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 672 |  |  |
Buildings and Improvements | 276 |  |  |
Total | 948 |  |  |
Accumulated Depreciation and Amortization | $ 219 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Galesburg, Illinois [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 468 |  |  |
Land and Land Estates | 560 |  |  |
Buildings and Improvements | 2,366 |  |  |
Total | 2,926 |  |  |
Accumulated Depreciation and Amortization | $ 714 |  |  |
Retail / Specialty [Member] | Galesburg, Illinois [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Retail / Specialty [Member] | Galesburg, Illinois [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Lawrence, Indiana [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 404 |  |  |
Buildings and Improvements | 1,737 |  |  |
Total | 2,141 |  |  |
Accumulated Depreciation and Amortization | $ 399 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Jefferson, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 71 |  |  |
Buildings and Improvements | 884 |  |  |
Total | 955 |  |  |
Accumulated Depreciation and Amortization | $ 230 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Lexington, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 832 |  |  |
Buildings and Improvements | 1,429 |  |  |
Total | 2,261 |  |  |
Accumulated Depreciation and Amortization | $ 322 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Thomasville, North Carolina [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 208 |  |  |
Buildings and Improvements | 561 |  |  |
Total | 769 |  |  |
Accumulated Depreciation and Amortization | $ 73 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Vineland, New Jersey [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 2,698 |  |  |
Buildings and Improvements | 12,790 |  |  |
Total | 15,488 |  |  |
Accumulated Depreciation and Amortization | $ 505 |  |  |
Retail / Specialty [Member] | Vineland, New Jersey [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 3 years |  |  |
Retail / Specialty [Member] | Vineland, New Jersey [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Vineland, New Jersey [Member] | Asset Component 1 [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 28 years |  |  |
Retail / Specialty [Member] | Portchester, New York [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 3,841 |  |  |
Buildings and Improvements | 5,246 |  |  |
Total | 9,087 |  |  |
Accumulated Depreciation and Amortization | $ 869 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Watertown, New York [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 785 |  |  |
Land and Land Estates | 386 |  |  |
Buildings and Improvements | 5,162 |  |  |
Total | 5,548 |  |  |
Accumulated Depreciation and Amortization | $ 1,414 |  |  |
Retail / Specialty [Member] | Watertown, New York [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 23 years |  |  |
Retail / Specialty [Member] | Watertown, New York [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Canton, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 884 |  |  |
Buildings and Improvements | 3,534 |  |  |
Total | 4,418 |  |  |
Accumulated Depreciation and Amortization | $ 1,248 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Franklin, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 213 |  |  |
Buildings and Improvements | 262 |  |  |
Total | 475 |  |  |
Accumulated Depreciation and Amortization | $ 6 |  |  |
Retail / Specialty [Member] | Franklin, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 24 years |  |  |
Retail / Specialty [Member] | Franklin, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 32 years |  |  |
Retail / Specialty [Member] | Lorain, Ohio [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 1,181 |  |  |
Land and Land Estates | 1,893 |  |  |
Buildings and Improvements | 7,024 |  |  |
Total | 8,917 |  |  |
Accumulated Depreciation and Amortization | $ 1,827 |  |  |
Retail / Specialty [Member] | Lorain, Ohio [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 23 years |  |  |
Retail / Specialty [Member] | Lorain, Ohio [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Lawton, Oklahoma [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 663 |  |  |
Buildings and Improvements | 1,288 |  |  |
Total | 1,951 |  |  |
Accumulated Depreciation and Amortization | $ 441 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Oklahoma City, Oklahoma [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,782 |  |  |
Buildings and Improvements | 912 |  |  |
Total | 2,694 |  |  |
Accumulated Depreciation and Amortization | $ 448 |  |  |
Retail / Specialty [Member] | Oklahoma City, Oklahoma [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 5 years |  |  |
Retail / Specialty [Member] | Oklahoma City, Oklahoma [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 13 years |  |  |
Retail / Specialty [Member] | Tulsa, Oklahoma [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 445 |  |  |
Buildings and Improvements | 2,433 |  |  |
Total | 2,878 |  |  |
Accumulated Depreciation and Amortization | $ 2,405 |  |  |
Retail / Specialty [Member] | Tulsa, Oklahoma [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 14 years |  |  |
Retail / Specialty [Member] | Tulsa, Oklahoma [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 24 years |  |  |
Retail / Specialty [Member] | Chattanooga, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 487 |  |  |
Buildings and Improvements | 956 |  |  |
Total | 1,443 |  |  |
Accumulated Depreciation and Amortization | $ 121 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Paris, Tennessee [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 247 |  |  |
Buildings and Improvements | 547 |  |  |
Total | 794 |  |  |
Accumulated Depreciation and Amortization | $ 180 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Staunton, Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 1,028 |  |  |
Buildings and Improvements | 326 |  |  |
Total | 1,354 |  |  |
Accumulated Depreciation and Amortization | $ 97 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Edmonds, Washington [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 0 |  |  |
Land and Land Estates | 0 |  |  |
Buildings and Improvements | 3,947 |  |  |
Total | 3,947 |  |  |
Accumulated Depreciation and Amortization | $ 1,079 |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |
Retail / Specialty [Member] | Fairlea, West Virginia [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Encumbrances | $ 551 |  |  |
Land and Land Estates | 501 |  |  |
Buildings and Improvements | 1,985 |  |  |
Total | 2,486 |  |  |
Accumulated Depreciation and Amortization | $ 490 |  |  |
Retail / Specialty [Member] | Fairlea, West Virginia [Member] | Minimum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 12 years |  |  |
Retail / Specialty [Member] | Fairlea, West Virginia [Member] | Maximum [Member] |  |  |  |
Real Estate and Accumulated Depreciation [Line Items] |  |  |  |
Useful life computing depreciation in latest income statement (years) | 40 years |  |  |

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