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Schedule III (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets $ 6,728,003 $ 6,689,692 $ 6,486,136
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,743,390 1,609,502 1,457,511
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis 6,600,000    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, beginning balance 6,689,692 6,486,136 5,594,833
Acquisitions, development and improvements 226,066 378,587 1,248,256
Cost of real estate sold, retired and deconsolidated (187,755) (175,031) (356,953)
Real estate assets, ending balance 6,728,003 6,689,692 6,486,136
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, beginning balance 1,609,502 1,457,511 1,421,956
Depreciation expense 253,151 240,273 218,628
Real estate sold, retired and deconsolidated (119,263) (88,282) (183,073)
Accumulated depreciation, ending balance 1,743,390 1,609,502 1,457,511
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,728,003 6,689,692 6,486,136
Development in process exclusive of land included in Schedule III 8,918 46,735 6,890
Real estate assets, net, held for sale 0 0 (3,482)
Total real estate assets 6,736,921 6,736,427 6,489,544
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,743,390 1,609,502 1,457,511
Real estate assets, net, held for sale 0 0 0
Total accumulated depreciation 1,743,390 $ 1,609,502 $ 1,457,511
Atlanta, GA - 1700 Century Circle [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 2,482    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 2    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 639    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 3,121    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,123    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,662    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,123    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 1,662    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,123    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,662    
Atlanta, GA - 1800 Century Boulevard [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,444    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 29,081    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,311    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,444    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 35,392    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 36,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,480    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 36,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 22,480    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 36,836    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,480    
Atlanta, GA - 1825 Century Boulevard [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 864    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 303    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15,204    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,167    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 15,204    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,371    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,169    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 16,371    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,169    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 16,371    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,169    
Atlanta, GA - 1875 Century Boulevard [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,924    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,038    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 17,962    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,962    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,278    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 17,962    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,278    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 17,962    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,278    
Atlanta, GA - 1900 Century Boulevard [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,744    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 340    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,084    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,084    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,084    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,084    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,084    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,084    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,084    
Atlanta, GA - 2200 Century Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 14,432    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,395    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 23,827    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 23,827    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 14,339    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 23,827    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 14,339    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 23,827    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 14,339    
Atlanta, GA - 2400 Century Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 406    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15,514    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 406    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 15,514    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,920    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,384    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,920    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,384    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,920    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,384    
Atlanta, GA - 2500 Century Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 328    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,507    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 328    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 11,507    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,835    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,114    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,835    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,114    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,835    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,114    
Atlanta, GA - 2500/2635 Parking Garage [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,447    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,447    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,447    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,933    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,447    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,933    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,447    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,933    
Atlanta, GA - 2600 Century Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 10,679    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,541    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 16,220    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,220    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,543    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 16,220    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,543    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 16,220    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,543    
Atlanta, GA - 2635 Century Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 21,643    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 21,669    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 43,312    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 43,312    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 24,379    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 43,312    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 24,379    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 43,312    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 24,379    
Atlanta, GA - 2800 Century Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 20,449    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,587    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 32,036    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,036    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 20,147    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 32,036    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 20,147    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 32,036    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 20,147    
Atlanta, GA - Century Plaza I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,290    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,567    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,020    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,290    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,587    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,877    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,863    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,877    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,863    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,877    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,863    
Atlanta, GA - Century Plaza II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,380    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 7,733    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,764    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,380    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 12,497    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,877    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,554    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,877    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,554    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,877    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,554    
Atlanta, GA - Riverwood 100 [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,785    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 64,913    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (29)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 31,582    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,756    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 96,495    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 102,251    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 34,264    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 102,251    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 34,264    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 102,251    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 34,264    
Atlanta, GA - Tradeport - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,243    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (4,733)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 510    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 510    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 510    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 510    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Atlanta, GA - Two Alliance Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 9,579    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 125,549    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 756    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 9,579    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 126,305    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 135,884    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 41,606    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 135,884    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 41,606    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 135,884    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 41,606    
Atlanta, GA - One Alliance Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 14,775    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 123,071    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 24,548    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 14,775    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 147,619    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 162,394    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 45,240    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 162,394    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 45,240    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 162,394    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 45,240    
Atlanta, GA - 10 Glenlake North [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,349    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 26,334    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 8,153    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,349    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 34,487    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 39,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,367    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 39,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,367    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 39,836    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,367    
Atlanta, GA - 10 Glenlake South [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,103    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 22,811    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 8,223    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,103    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 31,034    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 36,137    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,905    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 36,137    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,905    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 36,137    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,905    
Atlanta, GA - Riverwood 200 [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 4,777    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 89,708    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 450    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,033    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,227    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 91,741    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 96,968    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 19,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 96,968    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 19,819    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 96,968    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 19,819    
Atlanta, GA - Riverwood 300 - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 400    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 710    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 400    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 710    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,110    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 123    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 1,110    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 123    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 1,110    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 123    
Atlanta, GA - Monarch Tower [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 22,717    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 143,068    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 25,268    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 22,717    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 168,336    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 191,053    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 41,899    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 191,053    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 41,899    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 191,053    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 41,899    
Atlanta, GA - Monarch Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 27,678    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 88,962    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 19,637    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 27,678    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 108,599    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 136,277    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 24,488    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 136,277    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 24,488    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 136,277    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 24,488    
Atlanta, GA - Galleria 75 [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 19,740    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (1,938)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 697    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 17,802    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 697    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,499    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 99    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 18,499    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 99    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 18,499    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 99    
Charlotte, NC - Bank of America Tower [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 200,000    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 29,273    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 354,749    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 28,069    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 29,273    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 382,818    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 412,091    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 47,795    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 412,091    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 47,795    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 412,091    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 47,795    
Charlotte, NC - One Morrocroft [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 69,500    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,655    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 28,357    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (198)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,697    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,457    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 33,054    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 36,511    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,114    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 36,511    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,114    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 36,511    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,114    
Charlotte, NC - Two Morrocroft [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 69,500    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,530    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 28,804    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (190)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,675    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,340    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 30,479    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 33,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,716    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 33,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,716    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 33,819    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,716    
Charlotte, NC - Three Morrocroft [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 69,500    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,566    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 30,505    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (192)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,374    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 30,516    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 33,890    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,737    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 33,890    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,737    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 33,890    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,737    
Charlotte, NC - Capitol Towers North [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 124,500    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 8,642    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 96,254    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 768    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 8,642    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 97,022    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 105,664    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,304    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 105,664    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,304    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 105,664    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,304    
Charlotte, NC - Capitol Towers South [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 124,500    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 9,095    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 95,458    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 132    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 9,095    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 95,590    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 104,685    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,568    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 104,685    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,568    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 104,685    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,568    
Charlotte, NC - 1426 S. Tryon - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 26,702    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (421)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 26,281    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 26,281    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 26,281    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 26,281    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Charlotte, NC - SIX50 at Legacy Union [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 16,504    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 166,305    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,400    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 16,504    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 167,705    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 184,209    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,741    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 184,209    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,741    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 184,209    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,741    
Nashville, TN - 3322 West End [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,025    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 27,490    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 12,678    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,025    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 40,168    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 43,193    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,235    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 43,193    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 22,235    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 43,193    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,235    
Nashville, TN - 3401 West End [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,862    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 22,917    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,269    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,862    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 30,186    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 36,048    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 19,087    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 36,048    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 19,087    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 36,048    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 19,087    
Nashville, TN - 5310 Maryland Way [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,863    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 7,201    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,623    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,863    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 12,824    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,687    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,977    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,687    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,977    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,687    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,977    
Nashville, TN - Cool Springs I & II Deck [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,998    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 3,998    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,998    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,617    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,998    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 1,617    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,998    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,617    
Nashville, TN - Cool Springs III & IV Deck [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,468    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 4,468    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,468    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,875    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 4,468    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 1,875    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 4,468    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,875    
Nashville, TN - Cool Springs I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,583    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 15    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 16,867    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,598    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 16,867    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,465    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,850    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 18,465    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,850    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 18,465    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,850    
Nashville, TN - Cool Springs II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,824    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 346    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 25,482    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,170    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 25,482    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,652    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,177    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 27,652    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,177    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 27,652    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,177    
Nashville, TN - Cool Springs III [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,631    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 804    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 23,704    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,435    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 23,704    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 26,139    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,823    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 26,139    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,823    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 26,139    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,823    
Nashville, TN - Cool Springs IV [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,715    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 25,288    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,715    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 25,288    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,013    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 27,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,013    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 27,003    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,013    
Nashville, TN - Cool Springs V (Healthways) [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,688    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 295    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 50,813    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,983    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 50,813    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 54,796    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,033    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 54,796    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 17,033    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 54,796    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,033    
Nashville, TN - Harpeth II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,419    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 5,677    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 8,608    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,419    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,285    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,704    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,543    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,704    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,543    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,704    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,543    
Nashville, TN - Harpeth III [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,660    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,649    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,438    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,660    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 17,087    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,747    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,841    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 18,747    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,841    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 18,747    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,841    
Nashville, TN - Harpeth IV [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,713    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,842    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,936    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,713    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 17,778    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,491    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,007    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 19,491    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,007    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 19,491    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,007    
Nashville, TN - Harpeth V [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 662    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 197    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,965    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 859    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10,965    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,824    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,087    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,824    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,087    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,824    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,087    
Nashville, TN - Hickory Trace [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,164    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 164    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,989    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,328    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,989    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,317    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,024    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,317    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,024    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,317    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,024    
Nashville, TN - Highwoods Plaza I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,552    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 307    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,199    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,859    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,199    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,058    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,588    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,058    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,588    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,058    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,588    
Nashville, TN - Highwoods Plaza II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,448    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 307    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,642    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,755    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 7,642    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,397    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,372    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 9,397    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,372    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 9,397    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,372    
Nashville, TN - Seven Springs I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,076    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 592    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,814    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,668    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,814    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,482    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,144    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 17,482    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,144    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 17,482    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,144    
Nashville, TN - SouthPointe [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,655    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 310    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,493    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,965    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,493    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,458    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,476    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,458    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,476    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,458    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,476    
Nashville, TN - Westwood South [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,106    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 382    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,190    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,488    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 11,190    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,678    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,041    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,678    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,041    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,678    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,041    
Nashville, TN - 100 Winners Circle [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,497    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 7,258    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,687    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,497    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,945    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,442    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,328    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 16,442    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,328    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 16,442    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,328    
Nashville, TN - The Pinnacle at Symphony Place [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 87,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 141,469    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,181    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 147,650    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 147,650    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 51,151    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 147,650    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 51,151    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 147,650    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 51,151    
Nashville, TN - Seven Springs East [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,525    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 37,587    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 520    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,525    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 38,107    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 40,632    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,149    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 40,632    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,149    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 40,632    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,149    
Nashville, TN - The Shops at Seven Springs [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 803    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,223    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 691    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 803    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,914    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,717    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,663    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 9,717    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,663    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 9,717    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,663    
Nashville, TN - Seven Springs West [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,439    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 51,306    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,120    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,439    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 55,426    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 57,865    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,916    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 57,865    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,916    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 57,865    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,916    
Nashville, TN - Seven Springs II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,356    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 30,048    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,432    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,356    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 33,480    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 35,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,563    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 35,836    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,563    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 35,836    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,563    
Nashville, TN - Bridgestone Tower [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 19,223    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 169,582    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 457    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 19,223    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 170,039    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 189,262    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 31,117    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 189,262    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 31,117    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 189,262    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 31,117    
Nashville, TN - Virginia Springs II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 4,821    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 26,448    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,988    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 4,821    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 30,436    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 35,257    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,315    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 35,257    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,315    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 35,257    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,315    
Nashville, TN - MARS Campus [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 7,010    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 87,474    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 161    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 7,010    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 87,635    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 94,645    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,360    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 94,645    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 15,360    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 94,645    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,360    
Nashville, TN - Virginia Springs I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 4,534    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 25,632    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 308    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 4,534    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 25,940    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 30,474    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,732    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 30,474    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,732    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 30,474    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,732    
Nashville, TN - 1100 Broadway - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 29,845    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (259)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 29,586    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 29,586    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 29,586    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 29,586    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Nashville, TN - Asurion [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 33,219    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 230,569    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,780    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 33,219    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 233,349    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 266,568    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,157    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 266,568    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 17,157    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 266,568    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,157    
Nashville, TN - Ovation - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 89,231    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 192    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 89,423    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 89,423    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 89,423    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 89,423    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Nashville, TN - Broadway Stem - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 6,218    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (1,205)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 526    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,013    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 526    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,539    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 31    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,539    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 31    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,539    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 31    
Nashville, TN - YMCA Site - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 16,121    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (28)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 16,093    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,093    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 16,093    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 16,093    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Orlando, FL - Capital Plaza Three - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,994    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 18    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,012    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,012    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,012    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,012    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
South Florida - The 1800 Eller Drive Building [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 9,851    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,692    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 11,543    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,543    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,963    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,543    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,963    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,543    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,963    
Orlando - 201 South Orange [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,893    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 29,541    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,687    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,893    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 44,228    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 48,121    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 13,704    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 48,121    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 13,704    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 48,121    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 13,704    
Orlando - Capital Plaza Two [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 4,346    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 43,394    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,697    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 4,346    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 58,091    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 62,437    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,476    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 62,437    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 15,476    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 62,437    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,476    
Orlando - Capital Plaza One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,482    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 27,321    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,693    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,482    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 38,014    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 41,496    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,798    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 41,496    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,798    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 41,496    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,798    
Orlando - Landmark Center Two [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 4,743    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 22,031    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,894    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 4,743    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 33,925    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 38,668    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,873    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 38,668    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 10,873    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 38,668    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,873    
Orlando - Landmark Center One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 6,207    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 22,655    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 12,160    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 6,207    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 34,815    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 41,022    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,180    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 41,022    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,180    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 41,022    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,180    
Orlando - Bank of America Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,490    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 56,079    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,401    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,490    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 67,480    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 70,970    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,215    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 70,970    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 16,215    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 70,970    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,215    
Orlando, FL - Eola Centre [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,785    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 11,160    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15,584    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 5,785    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 26,744    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 32,529    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,732    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 32,529    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,732    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 32,529    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,732    
Pittsburgh, PA - One PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 9,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 107,643    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 57,996    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 9,819    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 165,639    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 175,458    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 58,449    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 175,458    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 58,449    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 175,458    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 58,449    
Pittsburgh, PA - Two PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,302    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 10,978    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15,373    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,302    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 26,351    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 28,653    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,649    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 28,653    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,649    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 28,653    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,649    
Pittsburgh, PA - Three PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 501    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 2,923    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,277    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 501    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,200    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,701    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,690    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,701    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,690    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,701    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,690    
Pittsburgh, PA - Four PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 620    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 3,239    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,378    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 620    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,617    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,237    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,786    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,237    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,786    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,237    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,786    
Pittsburgh, PA - Five PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 803    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,924    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,007    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 803    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 7,931    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,734    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,842    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,734    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,842    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,734    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,842    
Pittsburgh, PA - Six PPG Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,353    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 25,602    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 16,079    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,353    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 41,681    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 45,034    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,906    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 45,034    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 15,906    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 45,034    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 15,906    
Pittsburgh, PA - EQT Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 16,457    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 83,812    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (6,000)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements (5,867)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 10,457    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 77,945    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 88,402    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 37,168    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 88,402    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 37,168    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 88,402    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 37,168    
Pittsburgh, PA - East Liberty - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,478    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (1,204)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,274    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,274    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 1,274    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 1,274    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Raleigh, NC - 3600 Glenwood Avenue [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 10,994    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,237    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 17,231    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,231    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,057    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 17,231    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,057    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 17,231    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,057    
Raleigh, NC - 3737 Glenwood Avenue [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 318    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 17,946    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 318    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 17,946    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 18,264    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,889    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 18,264    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,889    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 18,264    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,889    
Raleigh, NC - 4800 North Park [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,678    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 17,630    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,472    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,678    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 25,102    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,780    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,202    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 27,780    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 17,202    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 27,780    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,202    
Raleigh, NC - 801 Raleigh Corporate Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 828    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 272    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,031    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,100    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,031    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,131    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,345    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,131    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,345    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,131    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,345    
Raleigh, NC - 2500 Blue Ridge Road [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 722    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,606    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,022    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 722    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,628    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,350    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,969    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,350    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,969    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,350    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,969    
Raleigh, NC - 2418 Blue Ridge Road [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 462    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 1,410    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,731    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 462    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 4,141    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,603    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,333    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 4,603    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,333    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 4,603    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,333    
Raleigh, NC - 2000 CentreGreen [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,529    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (391)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,485    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,138    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,485    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,623    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,749    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,623    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,749    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,623    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,749    
Raleigh, NC - 4000 CentreGreen [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,653    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (389)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 12,336    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,264    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 12,336    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,600    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,808    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,600    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,808    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,600    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,808    
Raleigh, NC - 5000 CentreGreen [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,291    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 34,572    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,197    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,291    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 36,769    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 38,060    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,583    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 38,060    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,583    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 38,060    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,583    
Raleigh, NC - 3000 CentreGreen [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,779    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (397)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,784    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,382    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,784    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 16,166    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,196    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 16,166    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,196    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 16,166    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,196    
Raleigh, NC - 1000 CentreGreen [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,280    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 55    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,765    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,335    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,765    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,100    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,491    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,100    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,491    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,100    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,491    
Raleigh, NC - GlenLake - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 13,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (12,382)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 114    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 621    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 114    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 735    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 65    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 735    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 65    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 735    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 65    
Raleigh, NC - GlenLake One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 924    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 1,324    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 23,241    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,248    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 23,241    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 25,489    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,934    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 25,489    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 11,934    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 25,489    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 11,934    
Raleigh, NC - GlenLake Four [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,659    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 493    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 20,795    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,152    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 20,795    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,947    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,920    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 22,947    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,920    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 22,947    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,920    
Raleigh, NC - GlenLake Six [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 941    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (365)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 22,210    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 576    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 22,210    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,786    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,899    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 22,786    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,899    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 22,786    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,899    
Raleigh, NC - 701 Raleigh Corporate Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,304    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 540    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 19,465    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,844    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 19,465    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 21,309    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,277    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 21,309    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 10,277    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 21,309    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,277    
Raleigh, NC - Highwoods Centre [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 531    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (267)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 8,064    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 264    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,064    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,328    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,069    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,328    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,069    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,328    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,069    
Raleigh, NC - Inveresk Parcel 2 - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 657    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 38    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 103    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 695    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 103    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 798    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 798    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 22    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 798    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22    
Raleigh, NC - 4201 Lake Boone Trail [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,450    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,311    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,077    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,450    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 7,388    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,838    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,519    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,838    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,519    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,838    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,519    
Raleigh, NC - 4620 Creekstone Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 149    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 107    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,904    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 256    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,904    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,160    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,183    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,160    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,183    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,160    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,183    
Raleigh, NC - 4825 Creekstone Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 398    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 293    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,796    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 691    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10,796    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,487    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,327    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,487    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,327    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,487    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,327    
Raleigh, NC - 751 Corporate Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,665    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 16,939    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements (144)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,665    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 16,795    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,460    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,076    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 19,460    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,076    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 19,460    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,076    
Raleigh, NC - PNC Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,206    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 71,200    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,206    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 71,200    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 72,406    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 32,059    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 72,406    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 32,059    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 72,406    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 32,059    
Raleigh, NC - 4301 Lake Boone Trail [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 878    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 3,730    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,066    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 878    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,796    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,674    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,547    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,674    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,547    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,674    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,547    
Raleigh, NC - 4207 Lake Boone Trail [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 362    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 1,818    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,113    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 362    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 2,931    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,293    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,320    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,293    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,320    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,293    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,320    
Raleigh, NC - 2301 Rexwoods Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 919    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 2,816    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,709    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 919    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 4,525    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,444    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,155    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,444    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,155    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,444    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,155    
Raleigh, NC - 4325 Lake Boone Trail [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 586    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,894    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 586    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 3,894    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 4,480    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,609    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 4,480    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,609    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 4,480    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,609    
Raleigh, NC - 2300 Rexwoods Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,301    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 184    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,988    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,485    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,988    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,473    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,620    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,473    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,620    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,473    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,620    
Raleigh, NC - 4700 Six Forks Road [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 666    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 2,665    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,796    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 666    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 4,461    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,666    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,666    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,127    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,666    
Raleigh, NC - 4700 Homewood Court [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,086    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,533    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,677    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,086    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,210    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,296    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,035    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,296    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,035    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,296    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,035    
Raleigh, NC - 4800 Six Forks Road [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 862    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,411    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,546    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 862    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,957    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,670    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,819    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,670    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,819    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,670    
Raleigh, NC - 4601 Creekstone Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 255    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 217    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,507    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 472    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,507    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,979    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,470    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,979    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,470    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,979    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,470    
Raleigh, NC - Weston - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 22,771    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (19,528)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,243    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,243    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,243    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,243    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Raleigh, NC - 4625 Creekstone Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 458    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 268    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,552    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 726    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,552    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,278    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,969    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,278    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,969    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,278    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,969    
Raleigh, NC - 11000 Weston Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,651    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 18,850    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 16,644    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,651    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 35,494    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 38,145    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,110    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 38,145    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,110    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 38,145    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,110    
Raleigh, NC - GlenLake Five [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,263    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 30,264    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,229    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,263    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 31,493    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 33,756    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,346    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 33,756    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 10,346    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 33,756    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,346    
Raleigh, NC - 11800 Weston Parkway [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 826    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 13,188    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 60    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 826    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,248    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,074    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,366    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,074    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,366    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,074    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,366    
Raleigh, NC - CentreGreen Cafe [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 41    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 3,509    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 41    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 3,524    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 3,565    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 798    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 3,565    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 798    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 3,565    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 798    
Raleigh, NC - CentreGreen Fitness Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 27    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 2,322    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 27    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 2,336    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,363    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 528    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 2,363    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 528    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 2,363    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 528    
Raleigh, NC - One City Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 11,288    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 68,375    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 25,572    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 11,288    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 93,947    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 105,235    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 30,250    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 105,235    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 30,250    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 105,235    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 30,250    
Raleigh, NC - Edison - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 5,984    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 1,575    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 7,559    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,559    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,559    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,559    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Raleigh, NC - Charter Square [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 7,267    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 65,881    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,016    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 7,267    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 69,897    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 77,164    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,034    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 77,164    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 16,034    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 77,164    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,034    
Raleigh, NC - Metlife Global Technology Campus [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 21,580    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 149,889    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 356    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 21,580    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 150,245    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 171,825    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 33,564    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 171,825    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 33,564    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 171,825    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 33,564    
Raleigh, NC - GlenLake Seven [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,662    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 37,332    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements (44)    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,662    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 37,288    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 38,950    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,145    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 38,950    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,145    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 38,950    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,145    
Raleigh, NC - Hargett - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 9,248    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (507)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 8,741    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,741    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,741    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,741    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Raleigh, NC - Forum I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,278    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 27,809    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,686    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,278    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 29,495    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 30,773    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,510    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 30,773    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,510    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 30,773    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,510    
Raleigh, NC - Forum II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,327    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 18,088    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 151    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,327    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 18,239    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 19,566    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,328    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 19,566    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,328    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 19,566    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,328    
Raleigh, NC - Forum III [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 994    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 23,931    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,480    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 994    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 25,411    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 26,405    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,421    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 26,405    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,421    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 26,405    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,421    
Raleigh, NC - Forum IV [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,118    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 43,889    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 279    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,118    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 44,168    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 46,286    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,970    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 46,286    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,970    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 46,286    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,970    
Raleigh, NC - Forum V [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,552    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 26,263    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,505    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,552    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 27,768    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 29,320    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,889    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 29,320    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,889    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 29,320    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,889    
Raleigh, NC - Captrust Tower [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 84,360    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 9,670    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 124,530    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,991    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 9,670    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 128,521    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 138,191    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,428    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 138,191    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,428    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 138,191    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,428    
Raleigh, NC - 150 Fayetteville [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 110,391    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 7,677    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 130,049    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 17,401    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 7,677    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 147,450    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 155,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,307    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 155,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,307    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 155,127    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,307    
Raleigh, NC - GlenLake III [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 3,981    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 65,660    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,981    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 65,660    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 69,641    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 550    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 69,641    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 550    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 69,641    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 550    
Raleigh, NC - 2205 Evans Road - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 2,676    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,676    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 2,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 2,676    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Raleigh, NC - Other Property [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 27,260    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 20,868    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (15,828)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,837    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 11,432    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 27,705    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 39,137    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,640    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 39,137    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 10,640    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 39,137    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 10,640    
Richmond, VA - 4900 Cox Road [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,324    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 5,311    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 15    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,742    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,339    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,053    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,392    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,694    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 9,392    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,694    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 9,392    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,694    
Richmond, VA - Colonnade Building [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,364    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,105    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,021    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,364    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,126    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,490    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,306    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 10,490    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,306    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 10,490    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,306    
Richmond, VA - Highwoods Commons [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 521    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 458    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,038    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 979    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,038    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,017    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,539    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,017    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 2,539    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,017    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 2,539    
Richmond, VA - Highwoods One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,688    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 22    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 14,072    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,710    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,072    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,782    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,421    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,782    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,421    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,782    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,421    
Richmond, VA - Highwoods Two [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 786    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 226    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,951    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,012    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10,951    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,963    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,521    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,963    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,521    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,963    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,521    
Richmond, VA - Highwoods Five [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 783    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 11    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 8,210    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 794    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,210    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,004    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,876    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 9,004    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,876    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 9,004    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,876    
Richmond, VA - Highwoods Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 909    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 187    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,334    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,096    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,334    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 7,430    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,311    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 7,430    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,311    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 7,430    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,311    
Richmond, VA - Innslake Center [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 845    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 125    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,706    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 970    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 7,706    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,262    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,262    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,676    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,262    
Richmond, VA - Highwoods Centre [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,205    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,825    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 2,887    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,205    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 7,712    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,917    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,361    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,917    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,361    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,917    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,361    
Richmond, VA - North Park [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,163    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,659    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 6    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,129    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,169    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 11,788    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,957    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,081    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,957    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,081    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,957    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,081    
Richmond, VA - North Shore Commons I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 951    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 137    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,947    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,088    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,947    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,035    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,494    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,035    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 6,494    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,035    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 6,494    
Richmond, VA - North Shore Commons II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,067    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (89)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 11,410    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,978    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 11,410    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,388    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,544    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,388    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,544    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,388    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,544    
Richmond, VA - North End - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,497    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 55    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,552    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 1,562    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 1,562    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 1,562    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3    
Richmond, VA - One Shockoe Plaza [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 356    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 22,374    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 356    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 22,374    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,730    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 13,031    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 22,730    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 13,031    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 22,730    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 13,031    
Richmond, VA - Lake Brook Commons [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,600    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,864    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (179)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 367    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,421    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,231    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,652    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,173    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 10,652    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,173    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 10,652    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,173    
Richmond, VA - Highwoods Three [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,918    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 358    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 12,445    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,276    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 12,445    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,721    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,522    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,721    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,522    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,721    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,522    
Richmond, VA - Stony Point I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,384    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 11,630    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (267)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,988    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,117    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 16,618    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,735    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,773    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 17,735    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,773    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 17,735    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,773    
Richmond, VA - Stony Point II [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,240    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 103    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,839    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,343    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,839    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 15,182    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,662    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 15,182    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,662    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 15,182    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,662    
Richmond, VA - Stony Point III [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 995    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,501    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 995    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10,501    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 11,496    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,516    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 11,496    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,516    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 11,496    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,516    
Richmond, VA - Stony Point IV [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 955    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,659    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 955    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,659    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,614    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,024    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,614    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,024    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,614    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,024    
Richmond, VA - Virginia Mutual [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,301    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,036    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 15    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,491    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,316    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 9,527    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,843    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,717    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 10,843    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,717    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 10,843    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,717    
Richmond, VA - Innsbrook Centre [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 914    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 8,249    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 677    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 914    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 8,926    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 9,840    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,406    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 9,840    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,406    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 9,840    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,406    
Tampa, FL - Meridian Three [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,673    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 16,470    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,379    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,673    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 22,849    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 25,522    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,488    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 25,522    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,488    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 25,522    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,488    
Tampa, FL - Bayshore Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,276    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 11,817    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,891    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,276    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 15,708    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 17,984    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,721    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 17,984    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,721    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 17,984    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,721    
Tampa, FL - Highwoods Bay Center I [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,565    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (64)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 38,207    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,501    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 38,207    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 41,708    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,401    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 41,708    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 16,401    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 41,708    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 16,401    
Tampa, FL - Horizon [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 6,257    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 4,294    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 10,551    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 10,551    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,736    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 10,551    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 5,736    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 10,551    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 5,736    
Tampa, FL - LakePointe One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,106    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 89    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 41,220    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,106    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 41,309    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 43,415    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 25,899    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 43,415    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 25,899    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 43,415    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 25,899    
Tampa, FL - LakePointe Two [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,000    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 15,848    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 672    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 13,455    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,672    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 29,303    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 31,975    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,383    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 31,975    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 17,383    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 31,975    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,383    
Tampa, FL - Lakeside [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 7,369    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,126    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 14,495    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 14,495    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,199    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 14,495    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 9,199    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 14,495    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 9,199    
Tampa, FL - Lakeside/Parkside Garage [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,731    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,731    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,731    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,197    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,731    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,197    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,731    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,197    
Tampa, FL - One Harbour Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,016    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 25,252    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 15,916    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,016    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 41,168    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 43,184    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,066    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 43,184    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 22,066    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 43,184    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 22,066    
Tampa, FL - Parkside [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 9,407    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 3,758    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 13,165    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 13,165    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,538    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 13,165    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 7,538    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 13,165    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 7,538    
Tampa, FL - Pavilion [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 16,394    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 7,052    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 23,446    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 23,446    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 14,425    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 23,446    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 14,425    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 23,446    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 14,425    
Tampa, FL - Pavilion Parking Garage [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,911    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,911    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 5,911    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,514    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 5,911    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,514    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 5,911    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,514    
Tampa, FL - Spectrum [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,454    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 14,502    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,513    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,454    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 21,015    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 22,469    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,054    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 22,469    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 12,054    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 22,469    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 12,054    
Tampa, FL - Tower Place [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 3,218    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 19,898    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 10,011    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 3,218    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 29,909    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 33,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,242    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 33,127    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 17,242    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 33,127    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 17,242    
Tampa, FL - Westshore Square [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,126    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 5,186    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,754    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,126    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 6,940    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 8,066    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,380    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 8,066    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 4,380    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 8,066    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 4,380    
Tampa, FL - Meridian One [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,849    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 22,363    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 5,464    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,849    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 27,827    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 29,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,416    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 29,676    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,416    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 29,676    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,416    
Tampa, FL - Meridian Two [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,302    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 19,588    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 6,848    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,302    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 26,436    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 27,738    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,604    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 27,738    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,604    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 27,738    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,604    
Tampa, FL - 5332 Avion Drive [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 6,310    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 43,901    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 6,310    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 43,901    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 50,211    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,833    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 50,211    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 8,833    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 50,211    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 8,833    
Tampa, FL - Suntrust Financial Centre [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 1,980    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 102,138    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 29,849    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 1,980    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 131,987    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 133,967    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 32,733    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 133,967    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 32,733    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 133,967    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 32,733    
Tampa, FL - Suntrust Financial - Land [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 2,225    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land 0    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 2,225    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 0    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 2,225    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 2,225    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 0    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 2,225    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 0    
Tampa, FL - Midtown [Member]      
Real Estate and Accumulated Depreciation [Line Items]      
Real Estate and Accumulated Depreciation, Encumbrances 45,000    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 16,543    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 34,818    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (218)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 9,931    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 16,325    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 44,749    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 61,074    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,670    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 61,074    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 3,670    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 61,074    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 3,670    
Total Real Estate and Accumulated Depreciation [Member]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land 807,561    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements 4,271,654    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition [Abstract]      
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Land (40,453)    
Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Buildings and Improvements 1,689,241    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Land 767,108    
Real Estate and Accumulated Depreciation, Gross Value at Close of Period, Buildings and Improvements 5,960,895    
Real Estate and Accumulated Depreciation,Gross Value at Close of Period, Total Assets 6,728,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation 1,743,390    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]      
Real estate assets, ending balance 6,728,003    
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]      
Accumulated depreciation, ending balance 1,743,390    
Reconciliation of Total Real Estate Assets to Balance Sheet [Abstract]      
Total real estate assets per Schedule III 6,728,003    
Reconciliation of Total Accumulated Depreciation to Balance Sheet [Abstract]      
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation $ 1,743,390    
Minimum [Member] | Atlanta, GA - 1700 Century Circle [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 1800 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 1825 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 1875 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 1900 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2200 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2400 Century Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2500 Century Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2500/2635 Parking Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2600 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2635 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 2800 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Century Plaza I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Century Plaza II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Riverwood 100 [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Two Alliance Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - One Alliance Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 10 Glenlake North [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - 10 Glenlake South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Riverwood 200 [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Riverwood 300 - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Monarch Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Atlanta, GA - Monarch Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - Bank of America Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - One Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - Two Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - Three Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - Capitol Towers North [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - Capitol Towers South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - 1426 S. Tryon - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Charlotte, NC - SIX50 at Legacy Union [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - 3322 West End [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - 3401 West End [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - 5310 Maryland Way [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs I & II Deck [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs III & IV Deck [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Cool Springs V (Healthways) [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Harpeth II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Harpeth III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Harpeth IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Harpeth V [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Hickory Trace [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Highwoods Plaza I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Highwoods Plaza II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Seven Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - SouthPointe [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Westwood South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - 100 Winners Circle [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - The Pinnacle at Symphony Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Seven Springs East [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - The Shops at Seven Springs [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Seven Springs West [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Seven Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Bridgestone Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Virginia Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - MARS Campus [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Virginia Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Asurion [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Nashville, TN - Broadway Stem - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | South Florida - The 1800 Eller Drive Building [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - 201 South Orange [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - Capital Plaza Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - Capital Plaza One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - Landmark Center Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - Landmark Center One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando - Bank of America Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Orlando, FL - Eola Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - One PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - Two PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - Three PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - Four PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - Five PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - Six PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Pittsburgh, PA - EQT Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 3600 Glenwood Avenue [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 3737 Glenwood Avenue [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4800 North Park [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 801 Raleigh Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 2500 Blue Ridge Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 2418 Blue Ridge Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 2000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 5000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 3000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 1000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake Four [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake Six [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 701 Raleigh Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Highwoods Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Inveresk Parcel 2 - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4201 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4620 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4825 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 751 Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - PNC Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4301 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4207 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 2301 Rexwoods Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4325 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 2300 Rexwoods Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4700 Six Forks Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4700 Homewood Court [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4800 Six Forks Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4601 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 4625 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 11000 Weston Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake Five [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 11800 Weston Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - CentreGreen Cafe [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - CentreGreen Fitness Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - One City Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Charter Square [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Metlife Global Technology Campus [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake Seven [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Forum I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Forum II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Forum III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Forum IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Forum V [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Captrust Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - 150 Fayetteville [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - GlenLake III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Raleigh, NC - Other Property [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - 4900 Cox Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Colonnade Building [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Commons [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Five [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Innslake Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - North Park [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - North Shore Commons I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - North Shore Commons II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - North End - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - One Shockoe Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Lake Brook Commons [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Highwoods Three [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Stony Point I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Stony Point II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Stony Point III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Stony Point IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Virginia Mutual [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Richmond, VA - Innsbrook Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Meridian Three [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Bayshore Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Highwoods Bay Center I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Horizon [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - LakePointe One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - LakePointe Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Lakeside [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Lakeside/Parkside Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - One Harbour Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Parkside [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Pavilion [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Pavilion Parking Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Spectrum [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Tower Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Westshore Square [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Meridian One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Meridian Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - 5332 Avion Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Suntrust Financial Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Minimum [Member] | Tampa, FL - Midtown [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 5 years    
Maximum [Member] | Atlanta, GA - 1700 Century Circle [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 1800 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 1825 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 1875 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 1900 Century Boulevard [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2200 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2400 Century Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2500 Century Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2500/2635 Parking Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2600 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2635 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 2800 Century Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Century Plaza I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Century Plaza II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Riverwood 100 [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Two Alliance Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - One Alliance Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 10 Glenlake North [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - 10 Glenlake South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Riverwood 200 [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Riverwood 300 - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Monarch Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Atlanta, GA - Monarch Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - Bank of America Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - One Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - Two Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - Three Morrocroft [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - Capitol Towers North [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - Capitol Towers South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - 1426 S. Tryon - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Charlotte, NC - SIX50 at Legacy Union [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - 3322 West End [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - 3401 West End [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - 5310 Maryland Way [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs I & II Deck [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs III & IV Deck [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Cool Springs V (Healthways) [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Harpeth II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Harpeth III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Harpeth IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Harpeth V [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Hickory Trace [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Highwoods Plaza I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Highwoods Plaza II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Seven Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - SouthPointe [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Westwood South [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - 100 Winners Circle [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - The Pinnacle at Symphony Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Seven Springs East [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - The Shops at Seven Springs [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Seven Springs West [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Seven Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Bridgestone Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Virginia Springs II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - MARS Campus [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Virginia Springs I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Asurion [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Nashville, TN - Broadway Stem - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | South Florida - The 1800 Eller Drive Building [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - 201 South Orange [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - Capital Plaza Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - Capital Plaza One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - Landmark Center Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - Landmark Center One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando - Bank of America Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Orlando, FL - Eola Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - One PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - Two PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - Three PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - Four PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - Five PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - Six PPG Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Pittsburgh, PA - EQT Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 3600 Glenwood Avenue [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 3737 Glenwood Avenue [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4800 North Park [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 801 Raleigh Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 2500 Blue Ridge Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 2418 Blue Ridge Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 2000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 5000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 3000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 1000 CentreGreen [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake Four [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake Six [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 701 Raleigh Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Highwoods Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Inveresk Parcel 2 - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4201 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4620 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4825 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 751 Corporate Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - PNC Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4301 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4207 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 2301 Rexwoods Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4325 Lake Boone Trail [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 2300 Rexwoods Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4700 Six Forks Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4700 Homewood Court [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4800 Six Forks Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4601 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 4625 Creekstone Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 11000 Weston Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake Five [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 11800 Weston Parkway [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - CentreGreen Cafe [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - CentreGreen Fitness Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - One City Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Charter Square [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Metlife Global Technology Campus [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake Seven [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Forum I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Forum II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Forum III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Forum IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Forum V [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Captrust Tower [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - 150 Fayetteville [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - GlenLake III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Raleigh, NC - Other Property [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - 4900 Cox Road [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Colonnade Building [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Commons [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Five [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Innslake Center [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - North Park [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - North Shore Commons I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - North Shore Commons II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - North End - Land [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - One Shockoe Plaza [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Lake Brook Commons [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Highwoods Three [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Stony Point I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Stony Point II [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Stony Point III [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Stony Point IV [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Virginia Mutual [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Richmond, VA - Innsbrook Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Meridian Three [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Bayshore Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Highwoods Bay Center I [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Horizon [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - LakePointe One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - LakePointe Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Lakeside [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Lakeside/Parkside Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - One Harbour Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Parkside [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Pavilion [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Pavilion Parking Garage [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Spectrum [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Tower Place [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Westshore Square [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Meridian One [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Meridian Two [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - 5332 Avion Drive [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Suntrust Financial Centre [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years    
Maximum [Member] | Tampa, FL - Midtown [Member]      
Real Estate and Accumulated Depreciation, Gross Value at Close of Period [Abstract]      
Real Estate and Accumulated Depreciation, Life Used For Depreciation 40 years