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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 168,368 |  |  |
Initial Cost |  |  |  |
Land | 662,081 |  |  |
Building and Land Improvements | 2,857,561 |  |  |
Costs Capitalized Subsequent to Acquisition | 355,073 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 662,081 |  |  |
Building and Land Improvements | 3,212,634 |  |  |
Total | 3,874,715 | $ 4,158,616 | $ 4,014,336 | $ 3,811,950
Accumulated Depreciation | (715,951) | (718,680) | (703,083) | $ (597,649)
Additional information |  |  |  |
Debt excluded from encumbrances | 1,904,001 | 2,077,752 |  |
Net discounts and deferred financing costs | 16,200 |  |  |
Aggregate cost of assets for federal income tax purposes | 3,400,000 |  |  |
Impairment losses | $ 101,391 | 23,289 | $ 1,416 |
Buildings improvements [Member] | Minimum [Member] |  |  |  |
Additional information |  |  |  |
Estimated lives over which depreciation is recognized | 10 years |  |  |
Buildings improvements [Member] | Maximum [Member] |  |  |  |
Additional information |  |  |  |
Estimated lives over which depreciation is recognized | 40 years |  |  |
Term Loan Facilities [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | $ 547,494 | $ 515,902 |  |
Unsecured Senior Notes [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 1,200,000 |  |  |
Unsecured notes payable [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 1,400 |  |  |
Fixed rate mortgage loans [Member] |  |  |  |
Additional information |  |  |  |
Net discounts and deferred financing costs | 777 |  |  |
100 Light Street [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 50,244 |  |  |
Initial Cost |  |  |  |
Land | 26,715 |  |  |
Building and Land Improvements | 58,343 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,388 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 26,715 |  |  |
Building and Land Improvements | 60,731 |  |  |
Total | 87,446 |  |  |
Accumulated Depreciation | (5,353) |  |  |
1000 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,057 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 20,533 |  |  |
Costs Capitalized Subsequent to Acquisition | 5 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 20,538 |  |  |
Total | 20,538 |  |  |
Accumulated Depreciation | (1,951) |  |  |
1100 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,513 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 19,593 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 19,593 |  |  |
Total | 19,593 |  |  |
Accumulated Depreciation | (1,455) |  |  |
114 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 364 |  |  |
Building and Land Improvements | 3,109 |  |  |
Costs Capitalized Subsequent to Acquisition | 117 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 364 |  |  |
Building and Land Improvements | 3,226 |  |  |
Total | 3,590 |  |  |
Accumulated Depreciation | (1,213) |  |  |
11751 Meadowville Lane [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,305 |  |  |
Building and Land Improvements | 52,098 |  |  |
Costs Capitalized Subsequent to Acquisition | 112 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,305 |  |  |
Building and Land Improvements | 52,210 |  |  |
Total | 53,515 |  |  |
Accumulated Depreciation | (12,636) |  |  |
1200 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 13,313 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 22,389 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 22,389 |  |  |
Total | 22,389 |  |  |
Accumulated Depreciation | (1,705) |  |  |
1201 M Street [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 49,784 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,916 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 56,700 |  |  |
Total | 56,700 |  |  |
Accumulated Depreciation | (10,789) |  |  |
1201 Winterson Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,288 |  |  |
Building and Land Improvements | 13,184 |  |  |
Costs Capitalized Subsequent to Acquisition | 460 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,288 |  |  |
Building and Land Improvements | 13,644 |  |  |
Total | 14,932 |  |  |
Accumulated Depreciation | (3,984) |  |  |
1220 12th Street, SE [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 42,464 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,026 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 46,490 |  |  |
Total | 46,490 |  |  |
Accumulated Depreciation | (10,005) |  |  |
1243 Winterson Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 630 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 630 |  |  |
Total | 630 |  |  |
131 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,906 |  |  |
Building and Land Improvements | 7,587 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,593 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,906 |  |  |
Building and Land Improvements | 11,180 |  |  |
Total | 13,086 |  |  |
Accumulated Depreciation | (5,903) |  |  |
132 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,917 |  |  |
Building and Land Improvements | 12,259 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,116 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,917 |  |  |
Building and Land Improvements | 16,375 |  |  |
Total | 19,292 |  |  |
Accumulated Depreciation | (8,121) |  |  |
133 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,517 |  |  |
Building and Land Improvements | 10,068 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,238 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,517 |  |  |
Building and Land Improvements | 15,306 |  |  |
Total | 17,823 |  |  |
Accumulated Depreciation | (8,843) |  |  |
1334 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 736 |  |  |
Building and Land Improvements | 1,488 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,639 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 736 |  |  |
Building and Land Improvements | 4,127 |  |  |
Total | 4,863 |  |  |
Accumulated Depreciation | (2,598) |  |  |
134 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,684 |  |  |
Building and Land Improvements | 7,517 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,693 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,684 |  |  |
Building and Land Improvements | 11,210 |  |  |
Total | 14,894 |  |  |
Accumulated Depreciation | (4,687) |  |  |
1340 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 905 |  |  |
Building and Land Improvements | 3,620 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,470 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 905 |  |  |
Building and Land Improvements | 5,090 |  |  |
Total | 5,995 |  |  |
Accumulated Depreciation | (2,738) |  |  |
13450 Sunrise Valley Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,386 |  |  |
Building and Land Improvements | 5,576 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,553 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,386 |  |  |
Building and Land Improvements | 10,129 |  |  |
Total | 11,515 |  |  |
Accumulated Depreciation | (4,320) |  |  |
13454 Sunrise Valley Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,899 |  |  |
Building and Land Improvements | 11,986 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,936 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,899 |  |  |
Building and Land Improvements | 18,922 |  |  |
Total | 21,821 |  |  |
Accumulated Depreciation | (8,111) |  |  |
135 National Business Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 2,484 |  |  |
Building and Land Improvements | 9,750 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,991 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,484 |  |  |
Building and Land Improvements | 15,741 |  |  |
Total | 18,225 |  |  |
Accumulated Depreciation | (7,201) |  |  |
1362 Mellon Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,706 |  |  |
Building and Land Improvements | 3,108 |  |  |
Costs Capitalized Subsequent to Acquisition | 182 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,706 |  |  |
Building and Land Improvements | 3,290 |  |  |
Total | 4,996 |  |  |
Accumulated Depreciation | (31) |  |  |
13857 McLearen Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,507 |  |  |
Building and Land Improvements | 30,176 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,603 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,507 |  |  |
Building and Land Improvements | 31,779 |  |  |
Total | 35,286 |  |  |
Accumulated Depreciation | (8,977) |  |  |
140 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,407 |  |  |
Building and Land Improvements | 24,167 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,055 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,407 |  |  |
Building and Land Improvements | 25,222 |  |  |
Total | 28,629 |  |  |
Accumulated Depreciation | (8,263) |  |  |
141 National Business Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 2,398 |  |  |
Building and Land Improvements | 9,493 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,008 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,398 |  |  |
Building and Land Improvements | 13,501 |  |  |
Total | 15,899 |  |  |
Accumulated Depreciation | (6,376) |  |  |
14280 Park Meadow Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,731 |  |  |
Building and Land Improvements | 15,953 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,614 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,731 |  |  |
Building and Land Improvements | 18,567 |  |  |
Total | 22,298 |  |  |
Accumulated Depreciation | (6,740) |  |  |
1460 Dorsey Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,577 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,577 |  |  |
Total | 1,577 |  |  |
14840 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,572 |  |  |
Building and Land Improvements | 8,175 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,853 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,572 |  |  |
Building and Land Improvements | 11,028 |  |  |
Total | 12,600 |  |  |
Accumulated Depreciation | (4,873) |  |  |
14850 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,615 |  |  |
Building and Land Improvements | 8,358 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,945 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,615 |  |  |
Building and Land Improvements | 11,303 |  |  |
Total | 12,918 |  |  |
Accumulated Depreciation | (5,309) |  |  |
14900 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,436 |  |  |
Building and Land Improvements | 14,402 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,997 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,436 |  |  |
Building and Land Improvements | 20,399 |  |  |
Total | 23,835 |  |  |
Accumulated Depreciation | (9,164) |  |  |
1501 South Clinton Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 27,964 |  |  |
Building and Land Improvements | 51,990 |  |  |
Costs Capitalized Subsequent to Acquisition | 8,588 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 27,964 |  |  |
Building and Land Improvements | 60,578 |  |  |
Total | 88,542 |  |  |
Accumulated Depreciation | (17,440) |  |  |
15049 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,415 |  |  |
Building and Land Improvements | 20,365 |  |  |
Costs Capitalized Subsequent to Acquisition | 12,380 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,415 |  |  |
Building and Land Improvements | 32,745 |  |  |
Total | 37,160 |  |  |
Accumulated Depreciation | (10,220) |  |  |
15059 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 5,753 |  |  |
Building and Land Improvements | 13,615 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,063 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 5,753 |  |  |
Building and Land Improvements | 16,678 |  |  |
Total | 22,431 |  |  |
Accumulated Depreciation | (7,218) |  |  |
1550 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 14,071 |  |  |
Building and Land Improvements | 16,930 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 14,071 |  |  |
Building and Land Improvements | 16,930 |  |  |
Total | 31,001 |  |  |
Accumulated Depreciation | (4,214) |  |  |
1560 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,441 |  |  |
Building and Land Improvements | 113 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,441 |  |  |
Building and Land Improvements | 113 |  |  |
Total | 1,554 |  |  |
Accumulated Depreciation | (7) |  |  |
1610 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 259 |  |  |
Building and Land Improvements | 183 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 259 |  |  |
Building and Land Improvements | 183 |  |  |
Total | 442 |  |  |
1616 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 393 |  |  |
Building and Land Improvements | 1,659 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 393 |  |  |
Building and Land Improvements | 1,659 |  |  |
Total | 2,052 |  |  |
1622 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 393 |  |  |
Building and Land Improvements | 3,159 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 393 |  |  |
Building and Land Improvements | 3,159 |  |  |
Total | 3,552 |  |  |
16442 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 613 |  |  |
Building and Land Improvements | 2,582 |  |  |
Costs Capitalized Subsequent to Acquisition | 894 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 613 |  |  |
Building and Land Improvements | 3,476 |  |  |
Total | 4,089 |  |  |
Accumulated Depreciation | (1,442) |  |  |
16480 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,856 |  |  |
Building and Land Improvements | 7,425 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,655 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,856 |  |  |
Building and Land Improvements | 9,080 |  |  |
Total | 10,936 |  |  |
Accumulated Depreciation | (2,768) |  |  |
16501 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 522 |  |  |
Building and Land Improvements | 2,090 |  |  |
Costs Capitalized Subsequent to Acquisition | 483 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 522 |  |  |
Building and Land Improvements | 2,573 |  |  |
Total | 3,095 |  |  |
Accumulated Depreciation | (882) |  |  |
16539 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 688 |  |  |
Building and Land Improvements | 2,859 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,923 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 688 |  |  |
Building and Land Improvements | 4,782 |  |  |
Total | 5,470 |  |  |
Accumulated Depreciation | (2,161) |  |  |
16541 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 773 |  |  |
Building and Land Improvements | 3,093 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,806 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 773 |  |  |
Building and Land Improvements | 4,899 |  |  |
Total | 5,672 |  |  |
Accumulated Depreciation | (1,865) |  |  |
16543 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 436 |  |  |
Building and Land Improvements | 1,742 |  |  |
Costs Capitalized Subsequent to Acquisition | 593 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 436 |  |  |
Building and Land Improvements | 2,335 |  |  |
Total | 2,771 |  |  |
Accumulated Depreciation | (696) |  |  |
1751 Pinnacle Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 10,486 |  |  |
Building and Land Improvements | 42,340 |  |  |
Costs Capitalized Subsequent to Acquisition | 24,774 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 10,486 |  |  |
Building and Land Improvements | 67,114 |  |  |
Total | 77,600 |  |  |
Accumulated Depreciation | (26,774) |  |  |
1753 Pinnacle Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,275 |  |  |
Building and Land Improvements | 34,353 |  |  |
Costs Capitalized Subsequent to Acquisition | 11,219 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 8,275 |  |  |
Building and Land Improvements | 45,572 |  |  |
Total | 53,847 |  |  |
Accumulated Depreciation | (17,286) |  |  |
201 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 726 |  |  |
Building and Land Improvements | 31,091 |  |  |
Costs Capitalized Subsequent to Acquisition | 60 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 726 |  |  |
Building and Land Improvements | 31,151 |  |  |
Total | 31,877 |  |  |
Accumulated Depreciation | (7,212) |  |  |
206 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,813 |  |  |
Building and Land Improvements | 1,287 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,813 |  |  |
Building and Land Improvements | 1,287 |  |  |
Total | 3,100 |  |  |
Accumulated Depreciation | (18) |  |  |
209 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,045 |  |  |
Building and Land Improvements | 4,714 |  |  |
Costs Capitalized Subsequent to Acquisition | 175 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,045 |  |  |
Building and Land Improvements | 4,889 |  |  |
Total | 5,934 |  |  |
Accumulated Depreciation | (86) |  |  |
210 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,065 |  |  |
Building and Land Improvements | 2,593 |  |  |
Costs Capitalized Subsequent to Acquisition | 75 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,065 |  |  |
Building and Land Improvements | 2,668 |  |  |
Total | 3,733 |  |  |
Accumulated Depreciation | (53) |  |  |
2100 L Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 35,868 |  |  |
Building and Land Improvements | 4,702 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 35,868 |  |  |
Building and Land Improvements | 4,702 |  |  |
Total | 40,570 |  |  |
2100 Rideout Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 4,551 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,825 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 7,376 |  |  |
Total | 7,376 |  |  |
Accumulated Depreciation | (44) |  |  |
22289 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,422 |  |  |
Building and Land Improvements | 5,719 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,758 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,422 |  |  |
Building and Land Improvements | 7,477 |  |  |
Total | 8,899 |  |  |
Accumulated Depreciation | (3,146) |  |  |
22299 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,362 |  |  |
Building and Land Improvements | 5,790 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,225 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,362 |  |  |
Building and Land Improvements | 8,015 |  |  |
Total | 9,377 |  |  |
Accumulated Depreciation | (3,123) |  |  |
22300 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,094 |  |  |
Building and Land Improvements | 5,038 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,320 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,094 |  |  |
Building and Land Improvements | 6,358 |  |  |
Total | 7,452 |  |  |
Accumulated Depreciation | (2,224) |  |  |
22309 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,243 |  |  |
Building and Land Improvements | 10,419 |  |  |
Costs Capitalized Subsequent to Acquisition | 7,786 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,243 |  |  |
Building and Land Improvements | 18,205 |  |  |
Total | 20,448 |  |  |
Accumulated Depreciation | (5,383) |  |  |
23535 Cottonwood Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 692 |  |  |
Building and Land Improvements | 3,051 |  |  |
Costs Capitalized Subsequent to Acquisition | 468 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 692 |  |  |
Building and Land Improvements | 3,519 |  |  |
Total | 4,211 |  |  |
Accumulated Depreciation | (1,363) |  |  |
250 W Pratt St [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,057 |  |  |
Building and Land Improvements | 34,605 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,452 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 8,057 |  |  |
Building and Land Improvements | 41,057 |  |  |
Total | 49,114 |  |  |
Accumulated Depreciation | (4,244) |  |  |
2500 Riva Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,791 |  |  |
Building and Land Improvements | 12,145 |  |  |
Costs Capitalized Subsequent to Acquisition | 1 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,791 |  |  |
Building and Land Improvements | 12,146 |  |  |
Total | 14,937 |  |  |
Accumulated Depreciation | (4,761) |  |  |
2600 Park Tower Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 20,304 |  |  |
Building and Land Improvements | 34,443 |  |  |
Costs Capitalized Subsequent to Acquisition | 398 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 20,304 |  |  |
Building and Land Improvements | 34,841 |  |  |
Total | 55,145 |  |  |
Accumulated Depreciation | (2,406) |  |  |
2691 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,098 |  |  |
Building and Land Improvements | 17,335 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,519 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,098 |  |  |
Building and Land Improvements | 22,854 |  |  |
Total | 24,952 |  |  |
Accumulated Depreciation | (8,722) |  |  |
2701 Technology Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 1,737 |  |  |
Building and Land Improvements | 15,266 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,367 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,737 |  |  |
Building and Land Improvements | 19,633 |  |  |
Total | 21,370 |  |  |
Accumulated Depreciation | (8,652) |  |  |
2711 Technology Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 2,251 |  |  |
Building and Land Improvements | 21,611 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,806 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,251 |  |  |
Building and Land Improvements | 23,417 |  |  |
Total | 25,668 |  |  |
Accumulated Depreciation | (10,727) |  |  |
2720 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,863 |  |  |
Building and Land Improvements | 29,272 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,218 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,863 |  |  |
Building and Land Improvements | 30,490 |  |  |
Total | 34,353 |  |  |
Accumulated Depreciation | (9,173) |  |  |
2721 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,611 |  |  |
Building and Land Improvements | 14,597 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,272 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,611 |  |  |
Building and Land Improvements | 15,869 |  |  |
Total | 20,480 |  |  |
Accumulated Depreciation | (6,970) |  |  |
2730 Hercules Road [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 8,737 |  |  |
Building and Land Improvements | 31,611 |  |  |
Costs Capitalized Subsequent to Acquisition | 8,697 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 8,737 |  |  |
Building and Land Improvements | 40,308 |  |  |
Total | 49,045 |  |  |
Accumulated Depreciation | (17,118) |  |  |
30 Light Street [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 4,227 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 12,101 |  |  |
Costs Capitalized Subsequent to Acquisition | 51 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 12,152 |  |  |
Total | 12,152 |  |  |
Accumulated Depreciation | (435) |  |  |
300 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,517 |  |  |
Building and Land Improvements | 59,186 |  |  |
Costs Capitalized Subsequent to Acquisition | 913 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,517 |  |  |
Building and Land Improvements | 60,099 |  |  |
Total | 61,616 |  |  |
Accumulated Depreciation | (9,991) |  |  |
302 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,648 |  |  |
Building and Land Improvements | 29,687 |  |  |
Costs Capitalized Subsequent to Acquisition | 454 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,648 |  |  |
Building and Land Improvements | 30,141 |  |  |
Total | 32,789 |  |  |
Accumulated Depreciation | (6,791) |  |  |
304 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,411 |  |  |
Building and Land Improvements | 24,917 |  |  |
Costs Capitalized Subsequent to Acquisition | 204 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,411 |  |  |
Building and Land Improvements | 25,121 |  |  |
Total | 28,532 |  |  |
Accumulated Depreciation | (6,957) |  |  |
306 Sentinel Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 3,260 |  |  |
Building and Land Improvements | 22,592 |  |  |
Costs Capitalized Subsequent to Acquisition | 829 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,260 |  |  |
Building and Land Improvements | 23,421 |  |  |
Total | 26,681 |  |  |
Accumulated Depreciation | (5,934) |  |  |
308 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,422 |  |  |
Building and Land Improvements | 26,208 |  |  |
Costs Capitalized Subsequent to Acquisition | 68 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,422 |  |  |
Building and Land Improvements | 26,276 |  |  |
Total | 27,698 |  |  |
Accumulated Depreciation | (3,710) |  |  |
310 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,372 |  |  |
Building and Land Improvements | 37,069 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,372 |  |  |
Building and Land Improvements | 37,069 |  |  |
Total | 39,441 |  |  |
Accumulated Depreciation | (1,051) |  |  |
310 The Bridge Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 261 |  |  |
Building and Land Improvements | 26,531 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,865 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 261 |  |  |
Building and Land Improvements | 29,396 |  |  |
Total | 29,657 |  |  |
Accumulated Depreciation | (6,215) |  |  |
312 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,138 |  |  |
Building and Land Improvements | 27,799 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,138 |  |  |
Building and Land Improvements | 27,799 |  |  |
Total | 30,937 |  |  |
Accumulated Depreciation | (1,608) |  |  |
3120 Fairview Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,863 |  |  |
Building and Land Improvements | 16,930 |  |  |
Costs Capitalized Subsequent to Acquisition | 12,147 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,863 |  |  |
Building and Land Improvements | 29,077 |  |  |
Total | 35,940 |  |  |
Accumulated Depreciation | (3,321) |  |  |
314 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,254 |  |  |
Building and Land Improvements | 7,694 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,254 |  |  |
Building and Land Improvements | 7,694 |  |  |
Total | 8,948 |  |  |
Accumulated Depreciation | (316) |  |  |
316 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,748 |  |  |
Building and Land Improvements | 38,156 |  |  |
Costs Capitalized Subsequent to Acquisition | 145 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,748 |  |  |
Building and Land Improvements | 38,301 |  |  |
Total | 41,049 |  |  |
Accumulated Depreciation | (4,538) |  |  |
318 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,185 |  |  |
Building and Land Improvements | 28,426 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,185 |  |  |
Building and Land Improvements | 28,426 |  |  |
Total | 30,611 |  |  |
Accumulated Depreciation | (7,691) |  |  |
320 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,067 |  |  |
Building and Land Improvements | 21,623 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,067 |  |  |
Building and Land Improvements | 21,623 |  |  |
Total | 23,690 |  |  |
Accumulated Depreciation | (4,851) |  |  |
322 Sentinel Way [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 2,605 |  |  |
Building and Land Improvements | 22,827 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,605 |  |  |
Building and Land Improvements | 22,827 |  |  |
Total | 25,432 |  |  |
Accumulated Depreciation | (5,714) |  |  |
324 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,656 |  |  |
Building and Land Improvements | 23,018 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,656 |  |  |
Building and Land Improvements | 23,018 |  |  |
Total | 24,674 |  |  |
Accumulated Depreciation | (3,654) |  |  |
410 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,831 |  |  |
Building and Land Improvements | 23,257 |  |  |
Costs Capitalized Subsequent to Acquisition | 121 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,831 |  |  |
Building and Land Improvements | 23,378 |  |  |
Total | 25,209 |  |  |
Accumulated Depreciation | (2,311) |  |  |
420 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,370 |  |  |
Building and Land Improvements | 27,650 |  |  |
Costs Capitalized Subsequent to Acquisition | 110 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,370 |  |  |
Building and Land Improvements | 27,760 |  |  |
Total | 30,130 |  |  |
Accumulated Depreciation | (1,931) |  |  |
430 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,852 |  |  |
Building and Land Improvements | 21,299 |  |  |
Costs Capitalized Subsequent to Acquisition | 161 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,852 |  |  |
Building and Land Improvements | 21,460 |  |  |
Total | 23,312 |  |  |
Accumulated Depreciation | (2,580) |  |  |
44408 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 817 |  |  |
Building and Land Improvements | 1,583 |  |  |
Costs Capitalized Subsequent to Acquisition | 581 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 817 |  |  |
Building and Land Improvements | 2,164 |  |  |
Total | 2,981 |  |  |
Accumulated Depreciation | (699) |  |  |
44414 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 405 |  |  |
Building and Land Improvements | 1,619 |  |  |
Costs Capitalized Subsequent to Acquisition | 341 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 405 |  |  |
Building and Land Improvements | 1,960 |  |  |
Total | 2,365 |  |  |
Accumulated Depreciation | (808) |  |  |
44417 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 434 |  |  |
Building and Land Improvements | 3,348 |  |  |
Costs Capitalized Subsequent to Acquisition | 88 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 434 |  |  |
Building and Land Improvements | 3,436 |  |  |
Total | 3,870 |  |  |
Accumulated Depreciation | (1,277) |  |  |
44420 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 344 |  |  |
Building and Land Improvements | 890 |  |  |
Costs Capitalized Subsequent to Acquisition | 168 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 344 |  |  |
Building and Land Improvements | 1,058 |  |  |
Total | 1,402 |  |  |
Accumulated Depreciation | (311) |  |  |
44425 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,309 |  |  |
Building and Land Improvements | 3,506 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,671 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,309 |  |  |
Building and Land Improvements | 5,177 |  |  |
Total | 6,486 |  |  |
Accumulated Depreciation | (2,090) |  |  |
45310 Abell House Lane [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,272 |  |  |
Building and Land Improvements | 13,808 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,272 |  |  |
Building and Land Improvements | 13,808 |  |  |
Total | 16,080 |  |  |
Accumulated Depreciation | (1,748) |  |  |
46579 Expedition Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,406 |  |  |
Building and Land Improvements | 5,796 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,409 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,406 |  |  |
Building and Land Improvements | 7,205 |  |  |
Total | 8,611 |  |  |
Accumulated Depreciation | (3,229) |  |  |
46591 Expedition Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,200 |  |  |
Building and Land Improvements | 7,199 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,236 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,200 |  |  |
Building and Land Improvements | 8,435 |  |  |
Total | 9,635 |  |  |
Accumulated Depreciation | (2,289) |  |  |
4851 Stonecroft Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,878 |  |  |
Building and Land Improvements | 11,558 |  |  |
Costs Capitalized Subsequent to Acquisition | 21 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,878 |  |  |
Building and Land Improvements | 11,579 |  |  |
Total | 13,457 |  |  |
Accumulated Depreciation | (3,538) |  |  |
5325 Nottingham Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 816 |  |  |
Building and Land Improvements | 2,994 |  |  |
Costs Capitalized Subsequent to Acquisition | 485 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 816 |  |  |
Building and Land Improvements | 3,479 |  |  |
Total | 4,295 |  |  |
Accumulated Depreciation | (370) |  |  |
5355 Nottingham Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 761 |  |  |
Building and Land Improvements | 2,281 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,917 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 761 |  |  |
Building and Land Improvements | 4,198 |  |  |
Total | 4,959 |  |  |
Accumulated Depreciation | (1,445) |  |  |
540 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,035 |  |  |
Building and Land Improvements | 26,273 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,035 |  |  |
Building and Land Improvements | 26,273 |  |  |
Total | 28,308 |  |  |
Accumulated Depreciation | 0 |  |  |
5520 Research Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 20,072 |  |  |
Costs Capitalized Subsequent to Acquisition | 287 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 20,359 |  |  |
Total | 20,359 |  |  |
Accumulated Depreciation | (3,716) |  |  |
5522 Research Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 4,550 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 4,550 |  |  |
Total | 4,550 |  |  |
Accumulated Depreciation | (1,069) |  |  |
5801 University Research Court [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 1,964 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 1,964 |  |  |
Total | 1,964 |  |  |
Accumulated Depreciation | 0 |  |  |
5825 University Research Court [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 21,677 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 22,740 |  |  |
Costs Capitalized Subsequent to Acquisition | 126 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 22,866 |  |  |
Total | 22,866 |  |  |
Accumulated Depreciation | (4,413) |  |  |
5850 University Research Court [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 22,933 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 31,906 |  |  |
Costs Capitalized Subsequent to Acquisition | 405 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 32,311 |  |  |
Total | 32,311 |  |  |
Accumulated Depreciation | (5,446) |  |  |
6700 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,755 |  |  |
Building and Land Improvements | 6,951 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,490 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,755 |  |  |
Building and Land Improvements | 13,441 |  |  |
Total | 15,196 |  |  |
Accumulated Depreciation | (6,373) |  |  |
6708 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 897 |  |  |
Building and Land Improvements | 8,975 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,605 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 897 |  |  |
Building and Land Improvements | 10,580 |  |  |
Total | 11,477 |  |  |
Accumulated Depreciation | (3,612) |  |  |
6711 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,683 |  |  |
Building and Land Improvements | 23,240 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,032 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,683 |  |  |
Building and Land Improvements | 24,272 |  |  |
Total | 26,955 |  |  |
Accumulated Depreciation | (6,070) |  |  |
6716 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,242 |  |  |
Building and Land Improvements | 4,973 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,707 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,242 |  |  |
Building and Land Improvements | 8,680 |  |  |
Total | 9,922 |  |  |
Accumulated Depreciation | (4,743) |  |  |
6721 Columbia Gateway Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 1,753 |  |  |
Building and Land Improvements | 34,090 |  |  |
Costs Capitalized Subsequent to Acquisition | 85 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,753 |  |  |
Building and Land Improvements | 34,175 |  |  |
Total | 35,928 |  |  |
Accumulated Depreciation | (6,655) |  |  |
6724 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 449 |  |  |
Building and Land Improvements | 5,039 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,190 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 449 |  |  |
Building and Land Improvements | 6,229 |  |  |
Total | 6,678 |  |  |
Accumulated Depreciation | (2,426) |  |  |
6731 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,807 |  |  |
Building and Land Improvements | 19,098 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,002 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,807 |  |  |
Building and Land Improvements | 22,100 |  |  |
Total | 24,907 |  |  |
Accumulated Depreciation | (9,285) |  |  |
6740 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,424 |  |  |
Building and Land Improvements | 5,696 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,305 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,424 |  |  |
Building and Land Improvements | 9,001 |  |  |
Total | 10,425 |  |  |
Accumulated Depreciation | (5,405) |  |  |
6741 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 675 |  |  |
Building and Land Improvements | 1,711 |  |  |
Costs Capitalized Subsequent to Acquisition | 124 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 675 |  |  |
Building and Land Improvements | 1,835 |  |  |
Total | 2,510 |  |  |
Accumulated Depreciation | (411) |  |  |
6750 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,263 |  |  |
Building and Land Improvements | 12,461 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,622 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,263 |  |  |
Building and Land Improvements | 16,083 |  |  |
Total | 17,346 |  |  |
Accumulated Depreciation | (8,151) |  |  |
6760 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 890 |  |  |
Building and Land Improvements | 3,561 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,155 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 890 |  |  |
Building and Land Improvements | 6,716 |  |  |
Total | 7,606 |  |  |
Accumulated Depreciation | (3,560) |  |  |
6940 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,545 |  |  |
Building and Land Improvements | 9,917 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,877 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,545 |  |  |
Building and Land Improvements | 15,794 |  |  |
Total | 19,339 |  |  |
Accumulated Depreciation | (7,558) |  |  |
6950 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,596 |  |  |
Building and Land Improvements | 14,269 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,220 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,596 |  |  |
Building and Land Improvements | 17,489 |  |  |
Total | 21,085 |  |  |
Accumulated Depreciation | (8,096) |  |  |
7000 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,131 |  |  |
Building and Land Improvements | 12,103 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,205 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,131 |  |  |
Building and Land Improvements | 17,308 |  |  |
Total | 20,439 |  |  |
Accumulated Depreciation | (5,280) |  |  |
7005 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,036 |  |  |
Building and Land Improvements | 424 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,036 |  |  |
Building and Land Improvements | 424 |  |  |
Total | 3,460 |  |  |
Accumulated Depreciation | 0 |  |  |
7015 Albert Einstein Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 1,214 |  |  |
Initial Cost |  |  |  |
Land | 2,058 |  |  |
Building and Land Improvements | 6,093 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,993 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,058 |  |  |
Building and Land Improvements | 8,086 |  |  |
Total | 10,144 |  |  |
Accumulated Depreciation | (3,142) |  |  |
7061 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 729 |  |  |
Building and Land Improvements | 3,094 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,018 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 729 |  |  |
Building and Land Improvements | 5,112 |  |  |
Total | 5,841 |  |  |
Accumulated Depreciation | (1,971) |  |  |
7063 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 902 |  |  |
Building and Land Improvements | 3,684 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,449 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 902 |  |  |
Building and Land Improvements | 6,133 |  |  |
Total | 7,035 |  |  |
Accumulated Depreciation | (2,760) |  |  |
7065 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 919 |  |  |
Building and Land Improvements | 3,763 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,095 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 919 |  |  |
Building and Land Improvements | 6,858 |  |  |
Total | 7,777 |  |  |
Accumulated Depreciation | (3,205) |  |  |
7067 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,829 |  |  |
Building and Land Improvements | 11,823 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,975 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,829 |  |  |
Building and Land Improvements | 14,798 |  |  |
Total | 16,627 |  |  |
Accumulated Depreciation | (6,605) |  |  |
7125 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,361 |  |  |
Building and Land Improvements | 2,207 |  |  |
Costs Capitalized Subsequent to Acquisition | 279 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,361 |  |  |
Building and Land Improvements | 2,486 |  |  |
Total | 5,847 |  |  |
7125 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 17,126 |  |  |
Building and Land Improvements | 46,994 |  |  |
Costs Capitalized Subsequent to Acquisition | 11,442 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 17,126 |  |  |
Building and Land Improvements | 58,436 |  |  |
Total | 75,562 |  |  |
Accumulated Depreciation | (18,673) |  |  |
7130 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,350 |  |  |
Building and Land Improvements | 4,359 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,232 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,350 |  |  |
Building and Land Improvements | 6,591 |  |  |
Total | 7,941 |  |  |
Accumulated Depreciation | (3,009) |  |  |
7134 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 704 |  |  |
Building and Land Improvements | 4,128 |  |  |
Costs Capitalized Subsequent to Acquisition | 327 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 704 |  |  |
Building and Land Improvements | 4,455 |  |  |
Total | 5,159 |  |  |
Accumulated Depreciation | (1,317) |  |  |
7138 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,104 |  |  |
Building and Land Improvements | 3,518 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,448 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,104 |  |  |
Building and Land Improvements | 5,966 |  |  |
Total | 7,070 |  |  |
Accumulated Depreciation | (3,292) |  |  |
7142 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,342 |  |  |
Building and Land Improvements | 3,978 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,608 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,342 |  |  |
Building and Land Improvements | 6,586 |  |  |
Total | 7,928 |  |  |
Accumulated Depreciation | (2,556) |  |  |
7150 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,032 |  |  |
Building and Land Improvements | 3,429 |  |  |
Costs Capitalized Subsequent to Acquisition | 783 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,032 |  |  |
Building and Land Improvements | 4,212 |  |  |
Total | 5,244 |  |  |
Accumulated Depreciation | (1,301) |  |  |
7150 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,821 |  |  |
Building and Land Improvements | 4,388 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,727 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,821 |  |  |
Building and Land Improvements | 6,115 |  |  |
Total | 7,936 |  |  |
Accumulated Depreciation | (2,118) |  |  |
7160 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,732 |  |  |
Building and Land Improvements | 7,006 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,296 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,732 |  |  |
Building and Land Improvements | 9,302 |  |  |
Total | 12,034 |  |  |
Accumulated Depreciation | (3,521) |  |  |
7170 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,283 |  |  |
Building and Land Improvements | 3,096 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,315 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,283 |  |  |
Building and Land Improvements | 4,411 |  |  |
Total | 5,694 |  |  |
Accumulated Depreciation | (1,558) |  |  |
7175 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,788 |  |  |
Building and Land Improvements | 7,269 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,788 |  |  |
Building and Land Improvements | 7,269 |  |  |
Total | 9,057 |  |  |
Accumulated Depreciation | (571) |  |  |
7200 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 6,479 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 8,348 |  |  |
Costs Capitalized Subsequent to Acquisition | 5 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 8,353 |  |  |
Total | 8,353 |  |  |
Accumulated Depreciation | (540) |  |  |
7200 Riverwood Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,089 |  |  |
Building and Land Improvements | 22,389 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,675 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,089 |  |  |
Building and Land Improvements | 27,064 |  |  |
Total | 31,153 |  |  |
Accumulated Depreciation | (9,338) |  |  |
7205 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,367 |  |  |
Building and Land Improvements | 21,419 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,367 |  |  |
Building and Land Improvements | 21,419 |  |  |
Total | 22,786 |  |  |
Accumulated Depreciation | (1,845) |  |  |
7272 Park Circle Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 0 |  |  |
Initial Cost |  |  |  |
Land | 1,479 |  |  |
Building and Land Improvements | 6,300 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,132 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,479 |  |  |
Building and Land Improvements | 10,432 |  |  |
Total | 11,911 |  |  |
Accumulated Depreciation | (3,412) |  |  |
7318 Parkway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 972 |  |  |
Building and Land Improvements | 3,888 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,224 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 972 |  |  |
Building and Land Improvements | 5,112 |  |  |
Total | 6,084 |  |  |
Accumulated Depreciation | (2,234) |  |  |
7320 Parkway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 905 |  |  |
Building and Land Improvements | 1,444 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,037 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 905 |  |  |
Building and Land Improvements | 6,481 |  |  |
Total | 7,386 |  |  |
Accumulated Depreciation | (1,302) |  |  |
7400 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 7,107 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 9,223 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 9,223 |  |  |
Total | 9,223 |  |  |
Accumulated Depreciation | (351) |  |  |
7467 Ridge Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,629 |  |  |
Building and Land Improvements | 3,052 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,136 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,629 |  |  |
Building and Land Improvements | 7,188 |  |  |
Total | 8,817 |  |  |
Accumulated Depreciation | (1,424) |  |  |
7740 Milestone Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 18,604 |  |  |
Initial Cost |  |  |  |
Land | 3,825 |  |  |
Building and Land Improvements | 34,177 |  |  |
Costs Capitalized Subsequent to Acquisition | 430 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,825 |  |  |
Building and Land Improvements | 34,607 |  |  |
Total | 38,432 |  |  |
Accumulated Depreciation | (5,572) |  |  |
7770 Backlick Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,387 |  |  |
Building and Land Improvements | 75,268 |  |  |
Costs Capitalized Subsequent to Acquisition | 142 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,387 |  |  |
Building and Land Improvements | 75,410 |  |  |
Total | 81,797 |  |  |
Accumulated Depreciation | (7,171) |  |  |
7880 Milestone Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,857 |  |  |
Building and Land Improvements | 24,419 |  |  |
Costs Capitalized Subsequent to Acquisition | 63 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,857 |  |  |
Building and Land Improvements | 24,482 |  |  |
Total | 29,339 |  |  |
Accumulated Depreciation | (764) |  |  |
8010 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,349 |  |  |
Building and Land Improvements | 1,523 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,349 |  |  |
Building and Land Improvements | 1,523 |  |  |
Total | 2,872 |  |  |
Accumulated Depreciation | (572) |  |  |
8020 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,184 |  |  |
Building and Land Improvements | 1,057 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,184 |  |  |
Building and Land Improvements | 1,057 |  |  |
Total | 3,241 |  |  |
Accumulated Depreciation | (684) |  |  |
8094 Sandpiper Circle [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,960 |  |  |
Building and Land Improvements | 2,288 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,131 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,960 |  |  |
Building and Land Improvements | 3,419 |  |  |
Total | 5,379 |  |  |
Accumulated Depreciation | (331) |  |  |
8098 Sandpiper Circle [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,797 |  |  |
Building and Land Improvements | 1,417 |  |  |
Costs Capitalized Subsequent to Acquisition | 639 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,797 |  |  |
Building and Land Improvements | 2,056 |  |  |
Total | 3,853 |  |  |
Accumulated Depreciation | 0 |  |  |
8110 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,285 |  |  |
Building and Land Improvements | 5,351 |  |  |
Costs Capitalized Subsequent to Acquisition | 989 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,285 |  |  |
Building and Land Improvements | 6,340 |  |  |
Total | 8,625 |  |  |
Accumulated Depreciation | (757) |  |  |
8140 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,158 |  |  |
Building and Land Improvements | 6,394 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,760 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,158 |  |  |
Building and Land Improvements | 10,154 |  |  |
Total | 12,312 |  |  |
Accumulated Depreciation | (2,085) |  |  |
8621 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,317 |  |  |
Building and Land Improvements | 12,642 |  |  |
Costs Capitalized Subsequent to Acquisition | 355 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,317 |  |  |
Building and Land Improvements | 12,997 |  |  |
Total | 15,314 |  |  |
Accumulated Depreciation | (3,740) |  |  |
8661 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,510 |  |  |
Building and Land Improvements | 3,764 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,427 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,510 |  |  |
Building and Land Improvements | 6,191 |  |  |
Total | 7,701 |  |  |
Accumulated Depreciation | (2,386) |  |  |
8671 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,718 |  |  |
Building and Land Improvements | 4,280 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,052 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,718 |  |  |
Building and Land Improvements | 8,332 |  |  |
Total | 10,050 |  |  |
Accumulated Depreciation | (3,354) |  |  |
870 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,003 |  |  |
Building and Land Improvements | 9,442 |  |  |
Costs Capitalized Subsequent to Acquisition | 7,611 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,003 |  |  |
Building and Land Improvements | 17,053 |  |  |
Total | 19,056 |  |  |
Accumulated Depreciation | (8,888) |  |  |
891 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,165 |  |  |
Building and Land Improvements | 4,772 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,948 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,165 |  |  |
Building and Land Improvements | 7,720 |  |  |
Total | 8,885 |  |  |
Accumulated Depreciation | (3,806) |  |  |
901 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,156 |  |  |
Building and Land Improvements | 4,437 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,386 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,156 |  |  |
Building and Land Improvements | 6,823 |  |  |
Total | 7,979 |  |  |
Accumulated Depreciation | (3,319) |  |  |
911 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,215 |  |  |
Building and Land Improvements | 4,861 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,043 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,215 |  |  |
Building and Land Improvements | 6,904 |  |  |
Total | 8,119 |  |  |
Accumulated Depreciation | (3,679) |  |  |
938 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 922 |  |  |
Building and Land Improvements | 4,748 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,469 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 922 |  |  |
Building and Land Improvements | 6,217 |  |  |
Total | 7,139 |  |  |
Accumulated Depreciation | (2,338) |  |  |
939 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 939 |  |  |
Building and Land Improvements | 3,756 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,437 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 939 |  |  |
Building and Land Improvements | 8,193 |  |  |
Total | 9,132 |  |  |
Accumulated Depreciation | (3,797) |  |  |
940 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 842 |  |  |
Building and Land Improvements | 4 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 842 |  |  |
Building and Land Improvements | 4 |  |  |
Total | 846 |  |  |
Accumulated Depreciation | 0 |  |  |
9651 Hornbaker Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,050 |  |  |
Building and Land Improvements | 249,074 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,140 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,050 |  |  |
Building and Land Improvements | 250,214 |  |  |
Total | 256,264 |  |  |
Accumulated Depreciation | (28,553) |  |  |
Arundel Preserve [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 13,401 |  |  |
Building and Land Improvements | 9,565 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 13,401 |  |  |
Building and Land Improvements | 9,565 |  |  |
Total | 22,966 |  |  |
Bethlehem Technology Park-DC18 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,599 |  |  |
Building and Land Improvements | 4,301 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,599 |  |  |
Building and Land Improvements | 4,301 |  |  |
Total | 7,900 |  |  |
Bethlehem Technology Park-DC19 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,708 |  |  |
Building and Land Improvements | 17,504 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,708 |  |  |
Building and Land Improvements | 17,504 |  |  |
Total | 21,212 |  |  |
Accumulated Depreciation | (34) |  |  |
Bethlehem Technology Park-DC20 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,599 |  |  |
Building and Land Improvements | 12,217 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,599 |  |  |
Building and Land Improvements | 12,217 |  |  |
Total | 15,816 |  |  |
Canton Crossing Land [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 16,085 |  |  |
Building and Land Improvements | 2,381 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 16,085 |  |  |
Building and Land Improvements | 2,381 |  |  |
Total | 18,466 |  |  |
Canton Crossing Util Distr Ctr [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,300 |  |  |
Building and Land Improvements | 15,556 |  |  |
Costs Capitalized Subsequent to Acquisition | 986 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 7,300 |  |  |
Building and Land Improvements | 16,542 |  |  |
Total | 23,842 |  |  |
Accumulated Depreciation | (3,900) |  |  |
Columbia Gateway - Southridge [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,387 |  |  |
Building and Land Improvements | 3,659 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,387 |  |  |
Building and Land Improvements | 3,659 |  |  |
Total | 10,046 |  |  |
Dahlgren Technology Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 978 |  |  |
Building and Land Improvements | 178 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 978 |  |  |
Building and Land Improvements | 178 |  |  |
Total | 1,156 |  |  |
Expedition VII [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 705 |  |  |
Building and Land Improvements | 729 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 705 |  |  |
Building and Land Improvements | 729 |  |  |
Total | 1,434 |  |  |
Innovation Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,443 |  |  |
Building and Land Improvements | 94 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,443 |  |  |
Building and Land Improvements | 94 |  |  |
Total | 4,537 |  |  |
M Square Research Park [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 2,581 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 2,581 |  |  |
Total | 2,581 |  |  |
National Business Park North [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 28,066 |  |  |
Building and Land Improvements | 44,579 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 28,066 |  |  |
Building and Land Improvements | 44,579 |  |  |
Total | 72,645 |  |  |
North Gate Business Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,212 |  |  |
Building and Land Improvements | 2,198 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 4,212 |  |  |
Building and Land Improvements | 2,198 |  |  |
Total | 6,410 |  |  |
Northwest Crossroads [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,430 |  |  |
Building and Land Improvements | 847 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 7,430 |  |  |
Building and Land Improvements | 847 |  |  |
Total | 8,277 |  |  |
NOVA Office A [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,096 |  |  |
Building and Land Improvements | 46,800 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 2,096 |  |  |
Building and Land Improvements | 46,800 |  |  |
Total | 48,896 |  |  |
Accumulated Depreciation | (2,230) |  |  |
NOVA Office B [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 739 |  |  |
Building and Land Improvements | 27,112 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 739 |  |  |
Building and Land Improvements | 27,112 |  |  |
Total | 27,851 |  |  |
Accumulated Depreciation | (450) |  |  |
NOVA Office D [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,587 |  |  |
Building and Land Improvements | 10,985 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,587 |  |  |
Building and Land Improvements | 10,985 |  |  |
Total | 17,572 |  |  |
Old Annapolis Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,637 |  |  |
Building and Land Improvements | 5,500 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,872 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,637 |  |  |
Building and Land Improvements | 10,372 |  |  |
Total | 12,009 |  |  |
Accumulated Depreciation | (3,237) |  |  |
Patriot Point - DC15 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 12,156 |  |  |
Building and Land Improvements | 16,844 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 12,156 |  |  |
Building and Land Improvements | 16,844 |  |  |
Total | 29,000 |  |  |
Accumulated Depreciation | (328) |  |  |
Patriot Point - DC16 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 12,156 |  |  |
Building and Land Improvements | 16,556 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 12,156 |  |  |
Building and Land Improvements | 16,556 |  |  |
Total | 28,712 |  |  |
Accumulated Depreciation | (289) |  |  |
Patriot Point - DC17 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,078 |  |  |
Building and Land Improvements | 15,971 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 6,078 |  |  |
Building and Land Improvements | 15,971 |  |  |
Total | 22,049 |  |  |
Accumulated Depreciation | (117) |  |  |
Patriot Ridge [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 18,517 |  |  |
Building and Land Improvements | 14,461 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 18,517 |  |  |
Building and Land Improvements | 14,461 |  |  |
Total | 32,978 |  |  |
Redstone Gateway [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 18,364 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 18,364 |  |  |
Total | 18,364 |  |  |
Route 15/Biggs Ford Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,129 |  |  |
Building and Land Improvements | 0 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,129 |  |  |
Building and Land Improvements | 0 |  |  |
Total | 1,129 |  |  |
Sentry Gateway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,275 |  |  |
Building and Land Improvements | 3,645 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 8,275 |  |  |
Building and Land Improvements | 3,645 |  |  |
Total | 11,920 |  |  |
Sentry Gateway - T [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 14,020 |  |  |
Building and Land Improvements | 38,804 |  |  |
Costs Capitalized Subsequent to Acquisition | 13 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 14,020 |  |  |
Building and Land Improvements | 38,817 |  |  |
Total | 52,837 |  |  |
Accumulated Depreciation | (9,590) |  |  |
Sentry Gateway - V [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 1,066 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 1,066 |  |  |
Total | 1,066 |  |  |
Accumulated Depreciation | (215) |  |  |
Sentry Gateway - W [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 1,884 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Building and Land Improvements | 1,884 |  |  |
Total | 1,884 |  |  |
Accumulated Depreciation | (343) |  |  |
Sentry Gateway - X [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 21,178 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 21,178 |  |  |
Total | 23,142 |  |  |
Accumulated Depreciation | (3,257) |  |  |
Sentry Gateway - Y [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 21,298 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 21,298 |  |  |
Total | 23,262 |  |  |
Accumulated Depreciation | (3,277) |  |  |
Sentry Gateway - Z [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 30,573 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 1,964 |  |  |
Building and Land Improvements | 30,573 |  |  |
Total | 32,537 |  |  |
Accumulated Depreciation | (1,379) |  |  |
Westfields - Park Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 16,418 |  |  |
Building and Land Improvements | 18,319 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 16,418 |  |  |
Building and Land Improvements | 18,319 |  |  |
Total | 34,737 |  |  |
Westfields Corporate Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,141 |  |  |
Building and Land Improvements | 1,432 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 7,141 |  |  |
Building and Land Improvements | 1,432 |  |  |
Total | 8,573 |  |  |
White Marsh [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,461 |  |  |
Building and Land Improvements | 309 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 3,461 |  |  |
Building and Land Improvements | 309 |  |  |
Total | 3,770 |  |  |
Woodland Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 9,614 |  |  |
Building and Land Improvements | 108 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 9,614 |  |  |
Building and Land Improvements | 108 |  |  |
Total | 9,722 |  |  |
Other Developments, including intercompany eliminations [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7 |  |  |
Building and Land Improvements | 314 |  |  |
Costs Capitalized Subsequent to Acquisition | 252 |  |  |
Gross Amounts Carried At Close of Period |  |  |  |
Land | 7 |  |  |
Building and Land Improvements | 566 |  |  |
Total | 573 |  |  |
Accumulated Depreciation | (48) |  |  |
Fair value measurement on a nonrecurring basis [Member] | Real Estate Held [Member] |  |  |  |
Additional information |  |  |  |
Impairment losses | 78,600 |  |  |
Fair value measurement on a nonrecurring basis [Member] | Real Estate Investment Properties, Net [Member] |  |  |  |
Additional information |  |  |  |
Impairment losses | $ 101,400 |  |  |

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