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Schedule III (Real Estate and Accumulated Depreciation and Amortization) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 162,006,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 49,761,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 211,455,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 261,216,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 14,848,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 49,833,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 226,261,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 276,046,000 |  |  |
Real Estate Accumulated Depreciation |  | 40,012,255 | [1] | $ 36,311,485 | $ 29,961,472
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 1,500,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | 234,534,000 |  |  |
Office/Industrial Properties [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | 102,988,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 34,215,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 145,751,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 179,966,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 13,121,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 34,257,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 158,830,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 193,087,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 32,166,000 |  |  |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 500,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | 160,421,000 |  |  |
Office/Industrial Properties [Member] | Garden Gateway Plaza [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | 6,445,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 3,035,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 12,091,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 15,126,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 1,347,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 3,035,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 13,438,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 16,473,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 5,039,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 11,434,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 03/07 |  |  |
Office/Industrial Properties [Member] | Garden Gateway Plaza [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1982 |  |  |
Office/Industrial Properties [Member] | Garden Gateway Plaza [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2006 |  |  |
Office/Industrial Properties [Member] | Executive Office Park [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,000,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,266,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 8,815,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 10,081,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 399,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,266,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 9,214,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 10,480,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,404,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 8,076,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 07/08 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2000 |  |  |
Office/Industrial Properties [Member] | Pacific Oaks Plaza [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 1,466,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 980,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 3,868,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 4,848,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 170,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 980,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 4,038,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 5,018,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 978,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 4,040,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 09/08 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2005 |  |  |
Office/Industrial Properties [Member] | Morena Office Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 2,156,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,333,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 5,203,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 6,536,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 603,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,333,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 5,806,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 7,139,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,769,000 |  |  |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 500,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 4,870,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 01/09 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1985 |  |  |
Office/Industrial Properties [Member] | Genesis Plaza [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 4,151,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,400,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 8,600,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 10,000,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 898,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,400,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 9,498,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 10,898,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,289,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 8,609,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/10 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1989 |  |  |
Office/Industrial Properties [Member] | Dakota Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,696,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 832,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 8,743,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 9,575,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 2,330,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 832,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 11,073,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 11,905,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,270,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 9,635,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 05/11 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1982 |  |  |
Office/Industrial Properties [Member] | Port of San Diego Complex [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 9,576,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 9,613,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 4,887,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 14,500,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 447,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 9,655,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 5,292,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 14,947,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,059,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 13,888,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 12/11 |  |  |
Office/Industrial Properties [Member] | Port of San Diego Complex [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1971 |  |  |
Office/Industrial Properties [Member] | Port of San Diego Complex [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2008 |  |  |
Office/Industrial Properties [Member] | The Presidio [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,454,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,325,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 5,950,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 7,275,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 977,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,325,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 6,927,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 8,252,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,837,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 6,415,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 11/12 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1985 |  |  |
Office/Industrial Properties [Member] | Grand Pacific Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 17,728,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 413,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 4,926,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 5,339,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 1,529,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 413,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 6,455,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 6,868,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,014,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 5,854,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 03/14 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1976 |  |  |
Office/Industrial Properties [Member] | Union Terrace [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 10,493,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,717,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 7,708,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 9,425,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 1,102,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,717,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 8,810,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 10,527,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,240,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 8,287,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/14 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1982 |  |  |
Office/Industrial Properties [Member] | Centennial Tech Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,000,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,025,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 13,475,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 15,500,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 251,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,025,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 13,726,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 15,751,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,320,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 13,431,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 12/14 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1999 |  |  |
Office/Industrial Properties [Member] | Arapahoe Service Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 1,909,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,420,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 10,430,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 11,850,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 489,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,420,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 10,919,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 12,339,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,701,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 10,638,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 12/14 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2000 |  |  |
Office/Industrial Properties [Member] | West Fargo Industrial [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 4,365,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,693,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 6,207,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 7,900,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 168,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,693,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 6,375,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 8,068,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 613,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 7,455,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/15 |  |  |
Office/Industrial Properties [Member] | West Fargo Industrial [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1998 |  |  |
Office/Industrial Properties [Member] | West Fargo Industrial [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2005 |  |  |
Office/Industrial Properties [Member] | 300 N.P. [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 4,058,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 135,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 3,715,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 3,850,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 149,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 135,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 3,864,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 3,999,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 363,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 3,636,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/15 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1922 |  |  |
Office/Industrial Properties [Member] | Highland Court [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 2,381,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 3,608,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 9,442,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 13,050,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 1,127,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 3,608,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 10,569,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 14,177,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,890,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 12,287,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/15 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1984 |  |  |
Office/Industrial Properties [Member] | One Park Centre [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,500,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,206,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 7,944,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 9,150,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 568,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,206,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 8,512,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 9,718,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,204,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 8,514,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/15 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1983 |  |  |
Office/Industrial Properties [Member] | Shea Center II [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 6,610,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,214,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 23,747,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 25,961,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 567,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,214,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 24,314,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 26,528,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 3,176,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 23,352,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 12/15 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2000 |  |  |
Retail Properties [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 30,563,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 8,592,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 28,125,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 36,717,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 1,727,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 8,622,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 29,852,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 38,426,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 6,559,000 |  |  |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 1,000,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | 30,867,000 |  |  |
Retail Properties [Member] | World Plaza [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,698,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 6,232,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 7,930,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 702,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,698,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 6,934,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 8,535,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 2,092,000 |  |  |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 700,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 5,743,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 09/07 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1974 |  |  |
Retail Properties [Member] | Waterman Plaza [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 3,850,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,350,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 4,814,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 7,164,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 66,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,380,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 4,880,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 7,263,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,339,000 |  |  |
Mortgage Loans on Real Estate, Write-down or Reserve, Amount |  | 300,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 5,624,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 08/08 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2008 |  |  |
Retail Properties [Member] | Yucca Valley Retail Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 8,440,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,386,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 5,175,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 7,561,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 749,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,386,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 5,924,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 8,316,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,711,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 6,605,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 9/11, 5/12 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 1978 |  |  |
Retail Properties [Member] | Union Town Center [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 8,364,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,750,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 9,462,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 11,212,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 152,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,750,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 9,614,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 11,396,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,187,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 10,209,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 12/14 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2003 |  |  |
Retail Properties [Member] | Research [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 9,908,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 408,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 2,442,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 2,850,000 |  |  |
SEC Schedule III Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements |  | 58,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 408,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 2,500,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 2,916,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 230,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 2,686,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 8/15/2016 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2003 |  |  |
Model Home [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 28,455,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 6,954,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 37,579,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 44,533,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 6,954,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 37,579,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 44,533,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 1,287,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | 43,246,000 |  |  |
Model Home [Member] | NetREIT Dubose Model Home REIT, Inc. [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | 7,369,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,002,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 10,508,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 12,510,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,002,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 10,508,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 12,510,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 487,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 12,023,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 2010-2016 |  |  |
Model Home [Member] | NetREIT Dubose Model Home REIT, Inc. [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2010 |  |  |
Model Home [Member] | NetREIT Dubose Model Home REIT, Inc. [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2016 |  |  |
Model Home [Member] | Dubose Model Home Investors 201 L.P. [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 4,331,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,097,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 5,838,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 6,935,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,097,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 5,838,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 6,935,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 236,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 6,699,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 2014-2016 |  |  |
Model Home [Member] | Dubose Model Home Investors 201 L.P. [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2012 |  |  |
Model Home [Member] | Dubose Model Home Investors 201 L.P. [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2014 |  |  |
Model Home [Member] | Dubose Model Home Investors 202, L.P. [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 9,162,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 2,103,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 11,455,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 13,558,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 2,103,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 11,455,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 13,558,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 267,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 13,291,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 2016 |  |  |
Model Home [Member] | Dubose Model Home Investors 202, L.P. [Member] | Minimum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2014 |  |  |
Model Home [Member] | Dubose Model Home Investors 202, L.P. [Member] | Maximum [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2016 |  |  |
Model Home [Member] | NetREIT Model Homes LLC [Member] |  |  |  |  |
Real Estate And Accumulated Depreciation [Line Items] |  |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  | $ 7,593,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Land |  | 1,752,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Initial Cost of Buildings and Improvements |  | 9,778,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Improvements, Total |  | 11,530,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Land |  | 1,752,000 |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Carrying Amount of Buildings and Improvements |  | 9,778,000 |  |  |
SEC Schedule III, Real Estate, Gross, Total |  | 11,530,000 |  |  |
Real Estate Accumulated Depreciation | [1] | 297,000 |  |  |
SEC Schedule III, Real Estate Investment Property, Net, Total |  | $ 11,233,000 |  |  |
Real Estate And Accumulated Depreciation Date Acquired |  | 2016 |  |  |
Real Estate And Accumulated Depreciation Year Built Or Renovated |  | 2016 |  |  |
[1] | Depreciation is computed on a straight-line basis using useful lives up to 39 years.

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- Definition Amount of reserve for write-down of a mortgage loan on real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.7) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Amount of accumulated depreciation pertaining to real estate investments for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28.FN4) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Amount of lien or mortgage outstanding on real estate investment properties for entities with a substantial portion of business acquiring and holding investment real estate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Amount before accumulated depreciation of buildings and improvements for entities with a substantial portion of business acquiring and holding investment real estate. Excludes real estate not held as an investment or interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 + Details
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