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Schedule III - Real Estate and Accumulated Depreciation (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | $ 316,887,000 |  |  |
Initial Cost |  |  |  |
Land | 709,953,000 |  |  |
Building and Land Improvements | 3,106,271,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 342,392,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 709,953,000 |  |  |
Building and Land Improvements | 3,448,663,000 |  |  |
Total | 4,158,616,000 | $ 4,014,336,000 | $ 3,811,950,000 | $ 3,859,960,000
Accumulated Depreciation | (718,680,000) | (703,083,000) | (597,649,000) | $ (568,176,000)
Additional information |  |  |  |
Debt excluded from encumbrances | 2,077,752,000 | 1,914,036,000 |  |
Net discounts and deferred financing costs | 19,500,000 |  |  |
Aggregate cost of assets for federal income tax purposes | 3,500,000,000 |  |  |
Impairment losses | $ 23,289,000 | 1,416,000 | $ 5,857,000 |
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 |  |  |
Revolving Credit Facility [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | $ 43,500,000 | 83,000,000 |  |
Term Loan Facilities [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 515,900,000 | 517,846,000 |  |
Unsecured Senior Notes [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 1,200,000,000 |  |  |
4.25% Exchangeable Senior Notes [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 0 | 572,000 |  |
Unsecured notes payable [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 1,500,000 | 1,607,000 |  |
Letter of Credit [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 14,800,000 |  |  |
Fixed rate mortgage loans [Member] |  |  |  |
Additional information |  |  |  |
Debt excluded from encumbrances | 281,208,000 | 385,769,000 |  |
Net discounts and deferred financing costs | 668,000 |  |  |
100 Light Street [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 50,732,000 |  |  |
Initial Cost |  |  |  |
Land | 26,715,000 |  |  |
Building and Land Improvements | 58,343,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 55,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 26,715,000 |  |  |
Building and Land Improvements | 58,398,000 |  |  |
Total | 85,113,000 |  |  |
Accumulated Depreciation | (1,588,000) |  |  |
1000 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,370,000 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 20,533,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 20,533,000 |  |  |
Total | 20,533,000 |  |  |
Accumulated Depreciation | (1,438,000) |  |  |
1100 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,791,000 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 19,593,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 19,593,000 |  |  |
Total | 19,593,000 |  |  |
Accumulated Depreciation | (965,000) |  |  |
114 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 364,000 |  |  |
Building and Land Improvements | 3,109,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 60,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 364,000 |  |  |
Building and Land Improvements | 3,169,000 |  |  |
Total | 3,533,000 |  |  |
Accumulated Depreciation | (1,125,000) |  |  |
11751 Meadowville Lane [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,305,000 |  |  |
Building and Land Improvements | 52,098,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 112,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,305,000 |  |  |
Building and Land Improvements | 52,210,000 |  |  |
Total | 53,515,000 |  |  |
Accumulated Depreciation | (11,194,000) |  |  |
1200 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 13,639,000 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 22,389,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 22,389,000 |  |  |
Total | 22,389,000 |  |  |
Accumulated Depreciation | (1,145,000) |  |  |
1201 M Street [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 49,785,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,225,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 54,010,000 |  |  |
Total | 54,010,000 |  |  |
Accumulated Depreciation | (8,947,000) |  |  |
1201 Winterson Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,288,000 |  |  |
Building and Land Improvements | 12,175,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 460,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,288,000 |  |  |
Building and Land Improvements | 12,635,000 |  |  |
Total | 13,923,000 |  |  |
Accumulated Depreciation | (3,824,000) |  |  |
1220 12th Street, SE [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 42,464,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,431,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 44,895,000 |  |  |
Total | 44,895,000 |  |  |
Accumulated Depreciation | (8,523,000) |  |  |
1243 Winterson Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 630,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 630,000 |  |  |
Total | 630,000 |  |  |
1302 Concourse Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,078,000 |  |  |
Building and Land Improvements | 8,313,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,559,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,078,000 |  |  |
Building and Land Improvements | 14,872,000 |  |  |
Total | 16,950,000 |  |  |
Accumulated Depreciation | (6,188,000) |  |  |
1304 Concourse Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,999,000 |  |  |
Building and Land Improvements | 12,934,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,884,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,999,000 |  |  |
Building and Land Improvements | 15,818,000 |  |  |
Total | 17,817,000 |  |  |
Accumulated Depreciation | (6,360,000) |  |  |
1306 Concourse Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,796,000 |  |  |
Building and Land Improvements | 11,186,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 8,152,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,796,000 |  |  |
Building and Land Improvements | 19,338,000 |  |  |
Total | 22,134,000 |  |  |
Accumulated Depreciation | (6,922,000) |  |  |
131 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,906,000 |  |  |
Building and Land Improvements | 7,623,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,524,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,906,000 |  |  |
Building and Land Improvements | 11,147,000 |  |  |
Total | 13,053,000 |  |  |
Accumulated Depreciation | (5,596,000) |  |  |
132 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,917,000 |  |  |
Building and Land Improvements | 12,259,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,005,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,917,000 |  |  |
Building and Land Improvements | 15,264,000 |  |  |
Total | 18,181,000 |  |  |
Accumulated Depreciation | (7,700,000) |  |  |
133 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,517,000 |  |  |
Building and Land Improvements | 10,068,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,204,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,517,000 |  |  |
Building and Land Improvements | 15,272,000 |  |  |
Total | 17,789,000 |  |  |
Accumulated Depreciation | (8,230,000) |  |  |
1331 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 587,000 |  |  |
Building and Land Improvements | 2,347,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,575,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 587,000 |  |  |
Building and Land Improvements | 3,922,000 |  |  |
Total | 4,509,000 |  |  |
Accumulated Depreciation | (1,337,000) |  |  |
1334 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 736,000 |  |  |
Building and Land Improvements | 1,488,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,639,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 736,000 |  |  |
Building and Land Improvements | 4,127,000 |  |  |
Total | 4,863,000 |  |  |
Accumulated Depreciation | (2,467,000) |  |  |
134 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,684,000 |  |  |
Building and Land Improvements | 7,517,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,496,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,684,000 |  |  |
Building and Land Improvements | 11,013,000 |  |  |
Total | 14,697,000 |  |  |
Accumulated Depreciation | (4,062,000) |  |  |
1340 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 905,000 |  |  |
Building and Land Improvements | 3,620,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,469,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 905,000 |  |  |
Building and Land Improvements | 5,089,000 |  |  |
Total | 5,994,000 |  |  |
Accumulated Depreciation | (2,621,000) |  |  |
1341 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 306,000 |  |  |
Building and Land Improvements | 1,223,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 604,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 306,000 |  |  |
Building and Land Improvements | 1,827,000 |  |  |
Total | 2,133,000 |  |  |
Accumulated Depreciation | (932,000) |  |  |
1343 Ashton Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 193,000 |  |  |
Building and Land Improvements | 774,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 405,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 193,000 |  |  |
Building and Land Improvements | 1,179,000 |  |  |
Total | 1,372,000 |  |  |
Accumulated Depreciation | (640,000) |  |  |
13450 Sunrise Valley Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,386,000 |  |  |
Building and Land Improvements | 5,576,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,335,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,386,000 |  |  |
Building and Land Improvements | 8,911,000 |  |  |
Total | 10,297,000 |  |  |
Accumulated Depreciation | (3,902,000) |  |  |
13454 Sunrise Valley Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,899,000 |  |  |
Building and Land Improvements | 11,986,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,750,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,899,000 |  |  |
Building and Land Improvements | 18,736,000 |  |  |
Total | 21,635,000 |  |  |
Accumulated Depreciation | (7,177,000) |  |  |
135 National Business Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,125,000 |  |  |
Initial Cost |  |  |  |
Land | 2,484,000 |  |  |
Building and Land Improvements | 9,750,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,700,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,484,000 |  |  |
Building and Land Improvements | 15,450,000 |  |  |
Total | 17,934,000 |  |  |
Accumulated Depreciation | (6,467,000) |  |  |
1362 Mellon Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,706,000 |  |  |
Building and Land Improvements | 8,670,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 182,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,706,000 |  |  |
Building and Land Improvements | 8,852,000 |  |  |
Total | 10,558,000 |  |  |
Accumulated Depreciation | (1,517,000) |  |  |
13857 McLearen Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,507,000 |  |  |
Building and Land Improvements | 30,177,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,565,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,507,000 |  |  |
Building and Land Improvements | 31,742,000 |  |  |
Total | 35,249,000 |  |  |
Accumulated Depreciation | (6,961,000) |  |  |
140 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,407,000 |  |  |
Building and Land Improvements | 24,167,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 688,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,407,000 |  |  |
Building and Land Improvements | 24,855,000 |  |  |
Total | 28,262,000 |  |  |
Accumulated Depreciation | (7,647,000) |  |  |
141 National Business Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 11,566,000 |  |  |
Initial Cost |  |  |  |
Land | 2,398,000 |  |  |
Building and Land Improvements | 9,590,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,194,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,398,000 |  |  |
Building and Land Improvements | 12,784,000 |  |  |
Total | 15,182,000 |  |  |
Accumulated Depreciation | (5,963,000) |  |  |
14280 Park Meadow Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,731,000 |  |  |
Building and Land Improvements | 15,953,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,764,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,731,000 |  |  |
Building and Land Improvements | 17,717,000 |  |  |
Total | 21,448,000 |  |  |
Accumulated Depreciation | (6,185,000) |  |  |
1460 Dorsey Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,800,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,800,000 |  |  |
Total | 1,800,000 |  |  |
14840 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,572,000 |  |  |
Building and Land Improvements | 8,175,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,860,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,572,000 |  |  |
Building and Land Improvements | 11,035,000 |  |  |
Total | 12,607,000 |  |  |
Accumulated Depreciation | (4,320,000) |  |  |
14850 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,615,000 |  |  |
Building and Land Improvements | 8,358,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,947,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,615,000 |  |  |
Building and Land Improvements | 11,305,000 |  |  |
Total | 12,920,000 |  |  |
Accumulated Depreciation | (4,646,000) |  |  |
14900 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,436,000 |  |  |
Building and Land Improvements | 14,402,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,239,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,436,000 |  |  |
Building and Land Improvements | 19,641,000 |  |  |
Total | 23,077,000 |  |  |
Accumulated Depreciation | (8,221,000) |  |  |
1501 South Clinton Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 27,964,000 |  |  |
Building and Land Improvements | 52,146,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 8,165,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 27,964,000 |  |  |
Building and Land Improvements | 60,311,000 |  |  |
Total | 88,275,000 |  |  |
Accumulated Depreciation | (14,472,000) |  |  |
15049 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,415,000 |  |  |
Building and Land Improvements | 20,365,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,619,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,415,000 |  |  |
Building and Land Improvements | 23,984,000 |  |  |
Total | 28,399,000 |  |  |
Accumulated Depreciation | (9,236,000) |  |  |
15059 Conference Center Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 5,753,000 |  |  |
Building and Land Improvements | 13,615,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,065,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 5,753,000 |  |  |
Building and Land Improvements | 15,680,000 |  |  |
Total | 21,433,000 |  |  |
Accumulated Depreciation | (6,697,000) |  |  |
15395 John Marshall Highway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,465,000 |  |  |
Building and Land Improvements | 24,768,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,465,000 |  |  |
Building and Land Improvements | 24,768,000 |  |  |
Total | 27,233,000 |  |  |
Accumulated Depreciation | (1,195,000) |  |  |
1550 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 14,071,000 |  |  |
Building and Land Improvements | 16,930,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 14,071,000 |  |  |
Building and Land Improvements | 16,930,000 |  |  |
Total | 31,001,000 |  |  |
Accumulated Depreciation | (3,626,000) |  |  |
1560 West Nursery Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,441,000 |  |  |
Building and Land Improvements | 113,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,441,000 |  |  |
Building and Land Improvements | 113,000 |  |  |
Total | 1,554,000 |  |  |
Accumulated Depreciation | (5,000) |  |  |
1560A Cable Ranch Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,097,000 |  |  |
Building and Land Improvements | 3,770,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 394,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,097,000 |  |  |
Building and Land Improvements | 4,164,000 |  |  |
Total | 5,261,000 |  |  |
Accumulated Depreciation | (1,298,000) |  |  |
1560B Cable Ranch Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,299,000 |  |  |
Building and Land Improvements | 6,545,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 159,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,299,000 |  |  |
Building and Land Improvements | 6,704,000 |  |  |
Total | 9,003,000 |  |  |
Accumulated Depreciation | (1,738,000) |  |  |
16442 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 613,000 |  |  |
Building and Land Improvements | 2,582,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 883,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 613,000 |  |  |
Building and Land Improvements | 3,465,000 |  |  |
Total | 4,078,000 |  |  |
Accumulated Depreciation | (1,332,000) |  |  |
16480 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,856,000 |  |  |
Building and Land Improvements | 7,425,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,283,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,856,000 |  |  |
Building and Land Improvements | 8,708,000 |  |  |
Total | 10,564,000 |  |  |
Accumulated Depreciation | (2,316,000) |  |  |
16501 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 522,000 |  |  |
Building and Land Improvements | 2,090,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 482,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 522,000 |  |  |
Building and Land Improvements | 2,572,000 |  |  |
Total | 3,094,000 |  |  |
Accumulated Depreciation | (797,000) |  |  |
16539 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 688,000 |  |  |
Building and Land Improvements | 2,860,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,524,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 688,000 |  |  |
Building and Land Improvements | 4,384,000 |  |  |
Total | 5,072,000 |  |  |
Accumulated Depreciation | (1,934,000) |  |  |
16541 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 773,000 |  |  |
Building and Land Improvements | 3,094,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,368,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 773,000 |  |  |
Building and Land Improvements | 4,462,000 |  |  |
Total | 5,235,000 |  |  |
Accumulated Depreciation | (1,727,000) |  |  |
16543 Commerce Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 436,000 |  |  |
Building and Land Improvements | 1,742,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 502,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 436,000 |  |  |
Building and Land Improvements | 2,244,000 |  |  |
Total | 2,680,000 |  |  |
Accumulated Depreciation | (573,000) |  |  |
1751 Pinnacle Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 10,486,000 |  |  |
Building and Land Improvements | 42,339,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 24,059,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 10,486,000 |  |  |
Building and Land Improvements | 66,398,000 |  |  |
Total | 76,884,000 |  |  |
Accumulated Depreciation | (23,750,000) |  |  |
1753 Pinnacle Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,275,000 |  |  |
Building and Land Improvements | 34,353,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 10,894,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,275,000 |  |  |
Building and Land Improvements | 45,247,000 |  |  |
Total | 53,522,000 |  |  |
Accumulated Depreciation | (15,849,000) |  |  |
201 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 726,000 |  |  |
Building and Land Improvements | 31,091,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 59,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 726,000 |  |  |
Building and Land Improvements | 31,150,000 |  |  |
Total | 31,876,000 |  |  |
Accumulated Depreciation | (6,358,000) |  |  |
206 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,813,000 |  |  |
Building and Land Improvements | 17,485,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,813,000 |  |  |
Building and Land Improvements | 17,485,000 |  |  |
Total | 19,298,000 |  |  |
Accumulated Depreciation | (1,416,000) |  |  |
209 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,045,000 |  |  |
Building and Land Improvements | 16,087,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 79,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,045,000 |  |  |
Building and Land Improvements | 16,166,000 |  |  |
Total | 17,211,000 |  |  |
Accumulated Depreciation | (2,069,000) |  |  |
210 Research Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,065,000 |  |  |
Building and Land Improvements | 15,102,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 75,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,065,000 |  |  |
Building and Land Improvements | 15,177,000 |  |  |
Total | 16,242,000 |  |  |
Accumulated Depreciation | (1,569,000) |  |  |
2100 Rideout Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 2,586,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 2,586,000 |  |  |
Total | 2,586,000 |  |  |
2100 L Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,273,000 |  |  |
Building and Land Improvements | 1,685,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,273,000 |  |  |
Building and Land Improvements | 1,685,000 |  |  |
Total | 2,958,000 |  |  |
21267 Smith Switch Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,040,000 |  |  |
Building and Land Improvements | 10,135,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,040,000 |  |  |
Building and Land Improvements | 10,135,000 |  |  |
Total | 14,175,000 |  |  |
Accumulated Depreciation | (365,000) |  |  |
21271 Smith Switch Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,346,000 |  |  |
Building and Land Improvements | 18,267,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 7,346,000 |  |  |
Building and Land Improvements | 18,267,000 |  |  |
Total | 25,613,000 |  |  |
Accumulated Depreciation | (881,000) |  |  |
22289 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,422,000 |  |  |
Building and Land Improvements | 5,719,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,660,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,422,000 |  |  |
Building and Land Improvements | 7,379,000 |  |  |
Total | 8,801,000 |  |  |
Accumulated Depreciation | (2,826,000) |  |  |
22299 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,362,000 |  |  |
Building and Land Improvements | 5,791,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,218,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,362,000 |  |  |
Building and Land Improvements | 7,009,000 |  |  |
Total | 8,371,000 |  |  |
Accumulated Depreciation | (2,641,000) |  |  |
22300 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,094,000 |  |  |
Building and Land Improvements | 5,038,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,315,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,094,000 |  |  |
Building and Land Improvements | 6,353,000 |  |  |
Total | 7,447,000 |  |  |
Accumulated Depreciation | (2,024,000) |  |  |
22309 Exploration Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,243,000 |  |  |
Building and Land Improvements | 10,419,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 7,787,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,243,000 |  |  |
Building and Land Improvements | 18,206,000 |  |  |
Total | 20,449,000 |  |  |
Accumulated Depreciation | (4,683,000) |  |  |
23535 Cottonwood Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 692,000 |  |  |
Building and Land Improvements | 3,051,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 248,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 692,000 |  |  |
Building and Land Improvements | 3,299,000 |  |  |
Total | 3,991,000 |  |  |
Accumulated Depreciation | (1,206,000) |  |  |
250 W Pratt St [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,057,000 |  |  |
Building and Land Improvements | 34,654,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,765,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,057,000 |  |  |
Building and Land Improvements | 39,419,000 |  |  |
Total | 47,476,000 |  |  |
Accumulated Depreciation | (1,652,000) |  |  |
2500 Riva Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,791,000 |  |  |
Building and Land Improvements | 12,145,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,791,000 |  |  |
Building and Land Improvements | 12,146,000 |  |  |
Total | 14,937,000 |  |  |
Accumulated Depreciation | (4,417,000) |  |  |
2600 Park Tower Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 20,304,000 |  |  |
Building and Land Improvements | 34,443,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 346,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 20,304,000 |  |  |
Building and Land Improvements | 34,789,000 |  |  |
Total | 55,093,000 |  |  |
Accumulated Depreciation | (1,051,000) |  |  |
2691 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,098,000 |  |  |
Building and Land Improvements | 17,334,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,305,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,098,000 |  |  |
Building and Land Improvements | 22,639,000 |  |  |
Total | 24,737,000 |  |  |
Accumulated Depreciation | (7,827,000) |  |  |
2701 Technology Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 22,053,000 |  |  |
Initial Cost |  |  |  |
Land | 1,737,000 |  |  |
Building and Land Improvements | 15,266,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,821,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,737,000 |  |  |
Building and Land Improvements | 18,087,000 |  |  |
Total | 19,824,000 |  |  |
Accumulated Depreciation | (7,567,000) |  |  |
2711 Technology Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 17,153,000 |  |  |
Initial Cost |  |  |  |
Land | 2,251,000 |  |  |
Building and Land Improvements | 21,611,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,468,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,251,000 |  |  |
Building and Land Improvements | 23,079,000 |  |  |
Total | 25,330,000 |  |  |
Accumulated Depreciation | (10,158,000) |  |  |
2720 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,863,000 |  |  |
Building and Land Improvements | 29,272,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 146,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,863,000 |  |  |
Building and Land Improvements | 29,418,000 |  |  |
Total | 33,281,000 |  |  |
Accumulated Depreciation | (8,316,000) |  |  |
2721 Technology Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,611,000 |  |  |
Building and Land Improvements | 14,597,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,263,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,611,000 |  |  |
Building and Land Improvements | 15,860,000 |  |  |
Total | 20,471,000 |  |  |
Accumulated Depreciation | (6,400,000) |  |  |
2730 Hercules Road [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 34,256,000 |  |  |
Initial Cost |  |  |  |
Land | 8,737,000 |  |  |
Building and Land Improvements | 31,612,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 7,213,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,737,000 |  |  |
Building and Land Improvements | 38,825,000 |  |  |
Total | 47,562,000 |  |  |
Accumulated Depreciation | (15,674,000) |  |  |
2900 Towerview Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,207,000 |  |  |
Building and Land Improvements | 16,379,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,509,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,207,000 |  |  |
Building and Land Improvements | 22,888,000 |  |  |
Total | 26,095,000 |  |  |
Accumulated Depreciation | (7,181,000) |  |  |
30 Light Street [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 4,268,000 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 12,101,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 37,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 12,138,000 |  |  |
Total | 12,138,000 |  |  |
Accumulated Depreciation | (128,000) |  |  |
300 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,517,000 |  |  |
Building and Land Improvements | 59,016,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 219,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,517,000 |  |  |
Building and Land Improvements | 59,235,000 |  |  |
Total | 60,752,000 |  |  |
Accumulated Depreciation | (8,458,000) |  |  |
302 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,648,000 |  |  |
Building and Land Improvements | 29,687,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 445,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,648,000 |  |  |
Building and Land Improvements | 30,132,000 |  |  |
Total | 32,780,000 |  |  |
Accumulated Depreciation | (6,000,000) |  |  |
304 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,411,000 |  |  |
Building and Land Improvements | 24,917,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 193,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,411,000 |  |  |
Building and Land Improvements | 25,110,000 |  |  |
Total | 28,521,000 |  |  |
Accumulated Depreciation | (6,304,000) |  |  |
306 Sentinel Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 15,878,000 |  |  |
Initial Cost |  |  |  |
Land | 3,260,000 |  |  |
Building and Land Improvements | 22,592,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 611,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,260,000 |  |  |
Building and Land Improvements | 23,203,000 |  |  |
Total | 26,463,000 |  |  |
Accumulated Depreciation | (5,269,000) |  |  |
308 Sentinel Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,422,000 |  |  |
Building and Land Improvements | 26,208,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 37,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,422,000 |  |  |
Building and Land Improvements | 26,245,000 |  |  |
Total | 27,667,000 |  |  |
Accumulated Depreciation | (3,050,000) |  |  |
310 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,372,000 |  |  |
Building and Land Improvements | 36,468,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,372,000 |  |  |
Building and Land Improvements | 36,468,000 |  |  |
Total | 38,840,000 |  |  |
Accumulated Depreciation | (191,000) |  |  |
310 The Bridge Street [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 261,000 |  |  |
Building and Land Improvements | 26,531,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,695,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 261,000 |  |  |
Building and Land Improvements | 28,226,000 |  |  |
Total | 28,487,000 |  |  |
Accumulated Depreciation | (5,136,000) |  |  |
312 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,138,000 |  |  |
Building and Land Improvements | 27,789,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,138,000 |  |  |
Building and Land Improvements | 27,789,000 |  |  |
Total | 30,927,000 |  |  |
Accumulated Depreciation | (913,000) |  |  |
3120 Fairview Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,863,000 |  |  |
Building and Land Improvements | 35,606,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 8,773,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,863,000 |  |  |
Building and Land Improvements | 44,379,000 |  |  |
Total | 51,242,000 |  |  |
Accumulated Depreciation | (7,229,000) |  |  |
314 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,254,000 |  |  |
Building and Land Improvements | 1,439,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,254,000 |  |  |
Building and Land Improvements | 1,439,000 |  |  |
Total | 2,693,000 |  |  |
Accumulated Depreciation | (249,000) |  |  |
316 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,748,000 |  |  |
Building and Land Improvements | 38,156,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 138,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,748,000 |  |  |
Building and Land Improvements | 38,294,000 |  |  |
Total | 41,042,000 |  |  |
Accumulated Depreciation | (3,570,000) |  |  |
318 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,185,000 |  |  |
Building and Land Improvements | 28,426,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,185,000 |  |  |
Building and Land Improvements | 28,426,000 |  |  |
Total | 30,611,000 |  |  |
Accumulated Depreciation | (6,981,000) |  |  |
320 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,067,000 |  |  |
Building and Land Improvements | 21,623,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,067,000 |  |  |
Building and Land Improvements | 21,623,000 |  |  |
Total | 23,690,000 |  |  |
Accumulated Depreciation | (4,310,000) |  |  |
322 Sentinel Way [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 21,122,000 |  |  |
Initial Cost |  |  |  |
Land | 2,605,000 |  |  |
Building and Land Improvements | 22,827,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,605,000 |  |  |
Building and Land Improvements | 22,827,000 |  |  |
Total | 25,432,000 |  |  |
Accumulated Depreciation | (5,143,000) |  |  |
324 Sentinel Way [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,656,000 |  |  |
Building and Land Improvements | 23,018,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,656,000 |  |  |
Building and Land Improvements | 23,018,000 |  |  |
Total | 24,674,000 |  |  |
Accumulated Depreciation | (3,078,000) |  |  |
410 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,831,000 |  |  |
Building and Land Improvements | 23,257,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 112,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,831,000 |  |  |
Building and Land Improvements | 23,369,000 |  |  |
Total | 25,200,000 |  |  |
Accumulated Depreciation | (1,719,000) |  |  |
420 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,370,000 |  |  |
Building and Land Improvements | 27,490,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 106,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,370,000 |  |  |
Building and Land Improvements | 27,596,000 |  |  |
Total | 29,966,000 |  |  |
Accumulated Depreciation | (1,230,000) |  |  |
430 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,852,000 |  |  |
Building and Land Improvements | 21,153,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 119,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,852,000 |  |  |
Building and Land Improvements | 21,272,000 |  |  |
Total | 23,124,000 |  |  |
Accumulated Depreciation | (2,034,000) |  |  |
44408 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 817,000 |  |  |
Building and Land Improvements | 1,583,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 581,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 817,000 |  |  |
Building and Land Improvements | 2,164,000 |  |  |
Total | 2,981,000 |  |  |
Accumulated Depreciation | (560,000) |  |  |
44414 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 405,000 |  |  |
Building and Land Improvements | 1,619,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 337,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 405,000 |  |  |
Building and Land Improvements | 1,956,000 |  |  |
Total | 2,361,000 |  |  |
Accumulated Depreciation | (725,000) |  |  |
44417 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 434,000 |  |  |
Building and Land Improvements | 3,348,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 88,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 434,000 |  |  |
Building and Land Improvements | 3,436,000 |  |  |
Total | 3,870,000 |  |  |
Accumulated Depreciation | (1,127,000) |  |  |
44420 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 344,000 |  |  |
Building and Land Improvements | 890,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 148,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 344,000 |  |  |
Building and Land Improvements | 1,038,000 |  |  |
Total | 1,382,000 |  |  |
Accumulated Depreciation | (255,000) |  |  |
44425 Pecan Court [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,309,000 |  |  |
Building and Land Improvements | 3,506,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,590,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,309,000 |  |  |
Building and Land Improvements | 5,096,000 |  |  |
Total | 6,405,000 |  |  |
Accumulated Depreciation | (1,784,000) |  |  |
45310 Abell House Lane [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,272,000 |  |  |
Building and Land Improvements | 13,808,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,272,000 |  |  |
Building and Land Improvements | 13,808,000 |  |  |
Total | 16,080,000 |  |  |
Accumulated Depreciation | (1,403,000) |  |  |
46579 Expedition Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,406,000 |  |  |
Building and Land Improvements | 5,796,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,335,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,406,000 |  |  |
Building and Land Improvements | 7,131,000 |  |  |
Total | 8,537,000 |  |  |
Accumulated Depreciation | (3,060,000) |  |  |
46591 Expedition Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,200,000 |  |  |
Building and Land Improvements | 7,199,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,134,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,200,000 |  |  |
Building and Land Improvements | 8,333,000 |  |  |
Total | 9,533,000 |  |  |
Accumulated Depreciation | (1,933,000) |  |  |
4851 Stonecroft Boulevard [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,878,000 |  |  |
Building and Land Improvements | 11,558,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 21,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,878,000 |  |  |
Building and Land Improvements | 11,579,000 |  |  |
Total | 13,457,000 |  |  |
Accumulated Depreciation | (3,248,000) |  |  |
4940 Campbell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,379,000 |  |  |
Building and Land Improvements | 2,728,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,464,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,379,000 |  |  |
Building and Land Improvements | 4,192,000 |  |  |
Total | 5,571,000 |  |  |
Accumulated Depreciation | (445,000) |  |  |
525 Babcock Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 355,000 |  |  |
Building and Land Improvements | 397,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 79,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 355,000 |  |  |
Building and Land Improvements | 476,000 |  |  |
Total | 831,000 |  |  |
Accumulated Depreciation | (173,000) |  |  |
5325 Nottingham Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 816,000 |  |  |
Building and Land Improvements | 3,976,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 485,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 816,000 |  |  |
Building and Land Improvements | 4,461,000 |  |  |
Total | 5,277,000 |  |  |
Accumulated Depreciation | (1,233,000) |  |  |
5355 Nottingham Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 761,000 |  |  |
Building and Land Improvements | 3,562,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,758,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 761,000 |  |  |
Building and Land Improvements | 5,320,000 |  |  |
Total | 6,081,000 |  |  |
Accumulated Depreciation | (2,132,000) |  |  |
540 National Business Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,035,000 |  |  |
Building and Land Improvements | 9,496,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,035,000 |  |  |
Building and Land Improvements | 9,496,000 |  |  |
Total | 11,531,000 |  |  |
Accumulated Depreciation | 0 |  |  |
5520 Research Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 20,072,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 201,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 20,273,000 |  |  |
Total | 20,273,000 |  |  |
Accumulated Depreciation | (3,195,000) |  |  |
5522 Research Park Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 4,550,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 4,550,000 |  |  |
Total | 4,550,000 |  |  |
Accumulated Depreciation | (955,000) |  |  |
5825 University Research Court [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 15,255,000 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 22,740,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 87,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 22,827,000 |  |  |
Total | 22,827,000 |  |  |
Accumulated Depreciation | (3,817,000) |  |  |
5850 University Research Court [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 20,771,000 |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 31,906,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 406,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 32,312,000 |  |  |
Total | 32,312,000 |  |  |
Accumulated Depreciation | (4,580,000) |  |  |
6700 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,755,000 |  |  |
Building and Land Improvements | 7,019,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 6,226,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,755,000 |  |  |
Building and Land Improvements | 13,245,000 |  |  |
Total | 15,000,000 |  |  |
Accumulated Depreciation | (5,913,000) |  |  |
6708 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 897,000 |  |  |
Building and Land Improvements | 8,844,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,591,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 897,000 |  |  |
Building and Land Improvements | 10,435,000 |  |  |
Total | 11,332,000 |  |  |
Accumulated Depreciation |  | (3,414,000) |  |
6711 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,683,000 |  |  |
Building and Land Improvements | 23,239,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 619,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,683,000 |  |  |
Building and Land Improvements | 23,858,000 |  |  |
Total | 26,541,000 |  |  |
Accumulated Depreciation |  | (5,407,000) |  |
6716 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,242,000 |  |  |
Building and Land Improvements | 4,969,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,352,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,242,000 |  |  |
Building and Land Improvements | 8,321,000 |  |  |
Total | 9,563,000 |  |  |
Accumulated Depreciation |  | (4,359,000) |  |
6721 Columbia Gateway Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 16,663,000 |  |  |
Initial Cost |  |  |  |
Land | 1,753,000 |  |  |
Building and Land Improvements | 34,090,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 76,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,753,000 |  |  |
Building and Land Improvements | 34,166,000 |  |  |
Total | 35,919,000 |  |  |
Accumulated Depreciation |  | (5,798,000) |  |
6724 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 449,000 |  |  |
Building and Land Improvements | 5,039,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 708,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 449,000 |  |  |
Building and Land Improvements | 5,747,000 |  |  |
Total | 6,196,000 |  |  |
Accumulated Depreciation |  | (2,266,000) |  |
6731 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,807,000 |  |  |
Building and Land Improvements | 19,098,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,916,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,807,000 |  |  |
Building and Land Improvements | 22,014,000 |  |  |
Total | 24,821,000 |  |  |
Accumulated Depreciation |  | (8,494,000) |  |
6740 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,424,000 |  |  |
Building and Land Improvements | 5,696,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,340,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,424,000 |  |  |
Building and Land Improvements | 9,036,000 |  |  |
Total | 10,460,000 |  |  |
Accumulated Depreciation |  | (5,058,000) |  |
6741 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 675,000 |  |  |
Building and Land Improvements | 1,711,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 124,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 675,000 |  |  |
Building and Land Improvements | 1,835,000 |  |  |
Total | 2,510,000 |  |  |
Accumulated Depreciation |  | (357,000) |  |
6750 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,263,000 |  |  |
Building and Land Improvements | 12,461,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,457,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,263,000 |  |  |
Building and Land Improvements | 15,918,000 |  |  |
Total | 17,181,000 |  |  |
Accumulated Depreciation |  | (7,576,000) |  |
6760 Alexander Bell Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 890,000 |  |  |
Building and Land Improvements | 3,561,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,974,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 890,000 |  |  |
Building and Land Improvements | 6,535,000 |  |  |
Total | 7,425,000 |  |  |
Accumulated Depreciation |  | (3,248,000) |  |
6940 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,545,000 |  |  |
Building and Land Improvements | 9,916,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,537,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,545,000 |  |  |
Building and Land Improvements | 15,453,000 |  |  |
Total | 18,998,000 |  |  |
Accumulated Depreciation |  | (7,000,000) |  |
6950 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,596,000 |  |  |
Building and Land Improvements | 14,269,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,087,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,596,000 |  |  |
Building and Land Improvements | 17,356,000 |  |  |
Total | 20,952,000 |  |  |
Accumulated Depreciation |  | (7,506,000) |  |
7000 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,131,000 |  |  |
Building and Land Improvements | 12,103,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,138,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,131,000 |  |  |
Building and Land Improvements | 14,241,000 |  |  |
Total | 17,372,000 |  |  |
Accumulated Depreciation |  | (4,482,000) |  |
7005 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,036,000 |  |  |
Building and Land Improvements | 189,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,036,000 |  |  |
Building and Land Improvements | 189,000 |  |  |
Total | 3,225,000 |  |  |
Accumulated Depreciation |  | 0 |  |
7015 Albert Einstein Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 1,570,000 |  |  |
Initial Cost |  |  |  |
Land | 2,058,000 |  |  |
Building and Land Improvements | 6,093,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,527,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,058,000 |  |  |
Building and Land Improvements | 7,620,000 |  |  |
Total | 9,678,000 |  |  |
Accumulated Depreciation |  | (2,915,000) |  |
7061 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 729,000 |  |  |
Building and Land Improvements | 3,094,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,407,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 729,000 |  |  |
Building and Land Improvements | 4,501,000 |  |  |
Total | 5,230,000 |  |  |
Accumulated Depreciation |  | (1,802,000) |  |
7063 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 902,000 |  |  |
Building and Land Improvements | 3,684,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,512,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 902,000 |  |  |
Building and Land Improvements | 6,196,000 |  |  |
Total | 7,098,000 |  |  |
Accumulated Depreciation |  | (2,452,000) |  |
7065 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 919,000 |  |  |
Building and Land Improvements | 3,763,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,095,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 919,000 |  |  |
Building and Land Improvements | 6,858,000 |  |  |
Total | 7,777,000 |  |  |
Accumulated Depreciation |  | (2,773,000) |  |
7067 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,829,000 |  |  |
Building and Land Improvements | 11,823,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,838,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,829,000 |  |  |
Building and Land Improvements | 14,661,000 |  |  |
Total | 16,490,000 |  |  |
Accumulated Depreciation |  | (6,154,000) |  |
7125 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 3,361,000 |  |  |
Building and Land Improvements | 1,677,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 279,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,361,000 |  |  |
Building and Land Improvements | 1,956,000 |  |  |
Total | 5,317,000 |  |  |
7125 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 17,126,000 |  |  |
Building and Land Improvements | 46,994,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 9,813,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 17,126,000 |  |  |
Building and Land Improvements | 56,807,000 |  |  |
Total | 73,933,000 |  |  |
Accumulated Depreciation |  | (16,632,000) |  |
7130 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,350,000 |  |  |
Building and Land Improvements | 4,359,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,906,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,350,000 |  |  |
Building and Land Improvements | 6,265,000 |  |  |
Total | 7,615,000 |  |  |
Accumulated Depreciation |  | (2,692,000) |  |
7134 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 704,000 |  |  |
Building and Land Improvements | 2,139,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 314,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 704,000 |  |  |
Building and Land Improvements | 2,453,000 |  |  |
Total | 3,157,000 |  |  |
Accumulated Depreciation |  | (1,234,000) |  |
7138 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,104,000 |  |  |
Building and Land Improvements | 3,518,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,118,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,104,000 |  |  |
Building and Land Improvements | 5,636,000 |  |  |
Total | 6,740,000 |  |  |
Accumulated Depreciation |  | (3,139,000) |  |
7142 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,342,000 |  |  |
Building and Land Improvements | 3,978,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,502,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,342,000 |  |  |
Building and Land Improvements | 6,480,000 |  |  |
Total | 7,822,000 |  |  |
Accumulated Depreciation |  | (2,322,000) |  |
7150 Columbia Gateway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,032,000 |  |  |
Building and Land Improvements | 3,429,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 665,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,032,000 |  |  |
Building and Land Improvements | 4,094,000 |  |  |
Total | 5,126,000 |  |  |
Accumulated Depreciation |  | (1,170,000) |  |
7150 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,821,000 |  |  |
Building and Land Improvements | 4,388,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,713,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,821,000 |  |  |
Building and Land Improvements | 6,101,000 |  |  |
Total | 7,922,000 |  |  |
Accumulated Depreciation |  | (1,933,000) |  |
7160 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,732,000 |  |  |
Building and Land Improvements | 7,006,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,275,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,732,000 |  |  |
Building and Land Improvements | 9,281,000 |  |  |
Total | 12,013,000 |  |  |
Accumulated Depreciation |  | (3,265,000) |  |
7170 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,283,000 |  |  |
Building and Land Improvements | 3,096,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 692,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,283,000 |  |  |
Building and Land Improvements | 3,788,000 |  |  |
Total | 5,071,000 |  |  |
Accumulated Depreciation |  | (1,386,000) |  |
7175 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,788,000 |  |  |
Building and Land Improvements | 7,269,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,788,000 |  |  |
Building and Land Improvements | 7,269,000 |  |  |
Total | 9,057,000 |  |  |
Accumulated Depreciation |  | (389,000) |  |
7200 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 6,649,000 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 8,347,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 8,347,000 |  |  |
Total | 8,347,000 |  |  |
Accumulated Depreciation |  | (328,000) |  |
7200 Riverwood Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,089,000 |  |  |
Building and Land Improvements | 22,544,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,994,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,089,000 |  |  |
Building and Land Improvements | 26,538,000 |  |  |
Total | 30,627,000 |  |  |
Accumulated Depreciation |  | (8,761,000) |  |
7205 Riverwood Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,367,000 |  |  |
Building and Land Improvements | 21,484,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,367,000 |  |  |
Building and Land Improvements | 21,484,000 |  |  |
Total | 22,851,000 |  |  |
Accumulated Depreciation |  | (1,310,000) |  |
7272 Park Circle Drive [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 4,747,000 |  |  |
Initial Cost |  |  |  |
Land | 1,479,000 |  |  |
Building and Land Improvements | 6,300,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,883,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,479,000 |  |  |
Building and Land Improvements | 10,183,000 |  |  |
Total | 11,662,000 |  |  |
Accumulated Depreciation |  | (2,956,000) |  |
7318 Parkway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 972,000 |  |  |
Building and Land Improvements | 3,888,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,002,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 972,000 |  |  |
Building and Land Improvements | 4,890,000 |  |  |
Total | 5,862,000 |  |  |
Accumulated Depreciation |  | (2,084,000) |  |
7320 Parkway Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 905,000 |  |  |
Building and Land Improvements | 3,570,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,048,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 905,000 |  |  |
Building and Land Improvements | 8,618,000 |  |  |
Total | 9,523,000 |  |  |
Accumulated Depreciation |  | (2,883,000) |  |
7400 Redstone Gateway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 7,292,000 |  |  |
Initial Cost |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 9,012,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 0 |  |  |
Building and Land Improvements | 9,012,000 |  |  |
Total | 9,012,000 |  |  |
Accumulated Depreciation |  | (121,000) |  |
7467 Ridge Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,629,000 |  |  |
Building and Land Improvements | 6,517,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,645,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,629,000 |  |  |
Building and Land Improvements | 10,162,000 |  |  |
Total | 11,791,000 |  |  |
Accumulated Depreciation |  | (4,439,000) |  |
7740 Milestone Parkway [Member] |  |  |  |
Real Estate and Accumulated Depreciation |  |  |  |
Encumbrances | 18,987,000 |  |  |
Initial Cost |  |  |  |
Land | 3,825,000 |  |  |
Building and Land Improvements | 34,176,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 404,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 3,825,000 |  |  |
Building and Land Improvements | 34,580,000 |  |  |
Total | 38,405,000 |  |  |
Accumulated Depreciation | (4,692,000) |  |  |
7770 Backlick Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,387,000 |  |  |
Building and Land Improvements | 74,325,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 141,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,387,000 |  |  |
Building and Land Improvements | 74,466,000 |  |  |
Total | 80,853,000 |  |  |
Accumulated Depreciation | (5,292,000) |  |  |
7880 Milestone Parkway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,857,000 |  |  |
Building and Land Improvements | 23,647,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,857,000 |  |  |
Building and Land Improvements | 23,647,000 |  |  |
Total | 28,504,000 |  |  |
Accumulated Depreciation | (215,000) |  |  |
8003 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 611,000 |  |  |
Building and Land Improvements | 1,126,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 685,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 611,000 |  |  |
Building and Land Improvements | 1,811,000 |  |  |
Total | 2,422,000 |  |  |
Accumulated Depreciation | (99,000) |  |  |
8007 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,434,000 |  |  |
Building and Land Improvements | 350,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,218,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,434,000 |  |  |
Building and Land Improvements | 1,568,000 |  |  |
Total | 3,002,000 |  |  |
Accumulated Depreciation | (278,000) |  |  |
8010 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,349,000 |  |  |
Building and Land Improvements | 3,262,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,744,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,349,000 |  |  |
Building and Land Improvements | 5,006,000 |  |  |
Total | 6,355,000 |  |  |
Accumulated Depreciation | (1,448,000) |  |  |
8013 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 642,000 |  |  |
Building and Land Improvements | 1,072,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,808,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 642,000 |  |  |
Building and Land Improvements | 2,880,000 |  |  |
Total | 3,522,000 |  |  |
Accumulated Depreciation | (519,000) |  |  |
8015 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 446,000 |  |  |
Building and Land Improvements | 1,116,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 466,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 446,000 |  |  |
Building and Land Improvements | 1,582,000 |  |  |
Total | 2,028,000 |  |  |
Accumulated Depreciation | (468,000) |  |  |
8019 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 680,000 |  |  |
Building and Land Improvements | 1,898,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 825,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 680,000 |  |  |
Building and Land Improvements | 2,723,000 |  |  |
Total | 3,403,000 |  |  |
Accumulated Depreciation | (827,000) |  |  |
8020 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,184,000 |  |  |
Building and Land Improvements | 3,767,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,205,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,184,000 |  |  |
Building and Land Improvements | 5,972,000 |  |  |
Total | 8,156,000 |  |  |
Accumulated Depreciation | (1,703,000) |  |  |
8023 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 651,000 |  |  |
Building and Land Improvements | 1,164,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 5,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 651,000 |  |  |
Building and Land Improvements | 1,169,000 |  |  |
Total | 1,820,000 |  |  |
Accumulated Depreciation | (47,000) |  |  |
8094 Sandpiper Circle [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,960,000 |  |  |
Building and Land Improvements | 3,716,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,129,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,960,000 |  |  |
Building and Land Improvements | 4,845,000 |  |  |
Total | 6,805,000 |  |  |
Accumulated Depreciation | (1,267,000) |  |  |
8098 Sandpiper Circle [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,797,000 |  |  |
Building and Land Improvements | 3,651,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 639,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,797,000 |  |  |
Building and Land Improvements | 4,290,000 |  |  |
Total | 6,087,000 |  |  |
Accumulated Depreciation | (929,000) |  |  |
8110 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,285,000 |  |  |
Building and Land Improvements | 10,117,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 989,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,285,000 |  |  |
Building and Land Improvements | 11,106,000 |  |  |
Total | 13,391,000 |  |  |
Accumulated Depreciation | (3,133,000) |  |  |
8140 Corporate Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,158,000 |  |  |
Building and Land Improvements | 8,457,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,163,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,158,000 |  |  |
Building and Land Improvements | 11,620,000 |  |  |
Total | 13,778,000 |  |  |
Accumulated Depreciation | (4,117,000) |  |  |
8621 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,317,000 |  |  |
Building and Land Improvements | 12,642,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 344,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,317,000 |  |  |
Building and Land Improvements | 12,986,000 |  |  |
Total | 15,303,000 |  |  |
Accumulated Depreciation | (3,378,000) |  |  |
8661 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,510,000 |  |  |
Building and Land Improvements | 3,764,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,420,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,510,000 |  |  |
Building and Land Improvements | 6,184,000 |  |  |
Total | 7,694,000 |  |  |
Accumulated Depreciation | (2,117,000) |  |  |
8671 Robert Fulton Drive [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,718,000 |  |  |
Building and Land Improvements | 4,280,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,931,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,718,000 |  |  |
Building and Land Improvements | 8,211,000 |  |  |
Total | 9,929,000 |  |  |
Accumulated Depreciation | (3,060,000) |  |  |
870 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,003,000 |  |  |
Building and Land Improvements | 9,442,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 7,616,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,003,000 |  |  |
Building and Land Improvements | 17,058,000 |  |  |
Total | 19,061,000 |  |  |
Accumulated Depreciation | (8,411,000) |  |  |
891 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,165,000 |  |  |
Building and Land Improvements | 4,772,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,928,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,165,000 |  |  |
Building and Land Improvements | 7,700,000 |  |  |
Total | 8,865,000 |  |  |
Accumulated Depreciation | (3,488,000) |  |  |
900 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,993,000 |  |  |
Building and Land Improvements | 7,972,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,603,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,993,000 |  |  |
Building and Land Improvements | 11,575,000 |  |  |
Total | 13,568,000 |  |  |
Accumulated Depreciation | (6,009,000) |  |  |
901 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,156,000 |  |  |
Building and Land Improvements | 4,437,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,390,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,156,000 |  |  |
Building and Land Improvements | 6,827,000 |  |  |
Total | 7,983,000 |  |  |
Accumulated Depreciation | (3,015,000) |  |  |
911 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,215,000 |  |  |
Building and Land Improvements | 4,861,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 2,024,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,215,000 |  |  |
Building and Land Improvements | 6,885,000 |  |  |
Total | 8,100,000 |  |  |
Accumulated Depreciation | (3,462,000) |  |  |
921 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,044,000 |  |  |
Building and Land Improvements | 4,727,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 748,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,044,000 |  |  |
Building and Land Improvements | 5,475,000 |  |  |
Total | 6,519,000 |  |  |
Accumulated Depreciation | (4,924,000) |  |  |
938 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 922,000 |  |  |
Building and Land Improvements | 4,748,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,263,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 922,000 |  |  |
Building and Land Improvements | 6,011,000 |  |  |
Total | 6,933,000 |  |  |
Accumulated Depreciation | (2,116,000) |  |  |
939 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 939,000 |  |  |
Building and Land Improvements | 3,756,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 4,245,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 939,000 |  |  |
Building and Land Improvements | 8,001,000 |  |  |
Total | 8,940,000 |  |  |
Accumulated Depreciation | (3,337,000) |  |  |
940 Elkridge Landing Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 842,000 |  |  |
Building and Land Improvements | 4,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 842,000 |  |  |
Building and Land Improvements | 4,000 |  |  |
Total | 846,000 |  |  |
Accumulated Depreciation | 0 |  |  |
9651 Hornbaker Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,050,000 |  |  |
Building and Land Improvements | 249,706,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 985,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,050,000 |  |  |
Building and Land Improvements | 250,691,000 |  |  |
Total | 256,741,000 |  |  |
Accumulated Depreciation | (18,119,000) |  |  |
Aerotech Commerce [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 900,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 900,000 |  |  |
Total | 900,000 |  |  |
Arborcrest [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 21,968,000 |  |  |
Building and Land Improvements | 122,759,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 1,301,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 21,968,000 |  |  |
Building and Land Improvements | 124,060,000 |  |  |
Total | 146,028,000 |  |  |
Accumulated Depreciation | (25,901,000) |  |  |
Arundel Preserve [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 13,401,000 |  |  |
Building and Land Improvements | 9,331,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 13,401,000 |  |  |
Building and Land Improvements | 9,331,000 |  |  |
Total | 22,732,000 |  |  |
Ashburn Crossing - DC 10 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,408,000 |  |  |
Building and Land Improvements | 10,689,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,408,000 |  |  |
Building and Land Improvements | 10,689,000 |  |  |
Total | 15,097,000 |  |  |
Accumulated Depreciation | (225,000) |  |  |
Canton Crossing Land [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 16,085,000 |  |  |
Building and Land Improvements | 2,134,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 16,085,000 |  |  |
Building and Land Improvements | 2,134,000 |  |  |
Total | 18,219,000 |  |  |
Canton Crossing Util Distr Ctr [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,300,000 |  |  |
Building and Land Improvements | 15,556,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 942,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 7,300,000 |  |  |
Building and Land Improvements | 16,498,000 |  |  |
Total | 23,798,000 |  |  |
Accumulated Depreciation | (3,326,000) |  |  |
Columbia Gateway - Southridge [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,387,000 |  |  |
Building and Land Improvements | 3,539,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,387,000 |  |  |
Building and Land Improvements | 3,539,000 |  |  |
Total | 9,926,000 |  |  |
Dahlgren Technology Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 978,000 |  |  |
Building and Land Improvements | 178,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 978,000 |  |  |
Building and Land Improvements | 178,000 |  |  |
Total | 1,156,000 |  |  |
Expedition VII [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 705,000 |  |  |
Building and Land Improvements | 728,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 705,000 |  |  |
Building and Land Improvements | 728,000 |  |  |
Total | 1,433,000 |  |  |
InterQuest [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,201,000 |  |  |
Building and Land Improvements | 0 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,201,000 |  |  |
Building and Land Improvements | 0 |  |  |
Total | 8,201,000 |  |  |
M Square Research Park [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 2,986,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 2,986,000 |  |  |
Total | 2,986,000 |  |  |
National Business Park North [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 28,066,000 |  |  |
Building and Land Improvements | 41,936,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 28,066,000 |  |  |
Building and Land Improvements | 41,936,000 |  |  |
Total | 70,002,000 |  |  |
North Gate Business Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,309,000 |  |  |
Building and Land Improvements | 4,540,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,309,000 |  |  |
Building and Land Improvements | 4,540,000 |  |  |
Total | 10,849,000 |  |  |
Northwest Crossroads [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,430,000 |  |  |
Building and Land Improvements | 847,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 7,430,000 |  |  |
Building and Land Improvements | 847,000 |  |  |
Total | 8,277,000 |  |  |
NOVA Office A [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,096,000 |  |  |
Building and Land Improvements | 47,364,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,096,000 |  |  |
Building and Land Improvements | 47,364,000 |  |  |
Total | 49,460,000 |  |  |
Accumulated Depreciation | (1,046,000) |  |  |
NOVA Office B [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 739,000 |  |  |
Building and Land Improvements | 26,277,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 739,000 |  |  |
Building and Land Improvements | 26,277,000 |  |  |
Total | 27,016,000 |  |  |
NOVA Office D [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,587,000 |  |  |
Building and Land Improvements | 103,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,587,000 |  |  |
Building and Land Improvements | 103,000 |  |  |
Total | 6,690,000 |  |  |
Old Annapolis Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,637,000 |  |  |
Building and Land Improvements | 5,500,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 3,457,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,637,000 |  |  |
Building and Land Improvements | 8,957,000 |  |  |
Total | 10,594,000 |  |  |
Accumulated Depreciation | (2,983,000) |  |  |
Patriot Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 2,328,000 |  |  |
Building and Land Improvements | 1,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 2,328,000 |  |  |
Building and Land Improvements | 1,000 |  |  |
Total | 2,329,000 |  |  |
Patriot Point - DC15 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 12,156,000 |  |  |
Building and Land Improvements | 7,112,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 12,156,000 |  |  |
Building and Land Improvements | 7,112,000 |  |  |
Total | 19,268,000 |  |  |
Patriot Point - DC16 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 12,156,000 |  |  |
Building and Land Improvements | 4,110,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 12,156,000 |  |  |
Building and Land Improvements | 4,110,000 |  |  |
Total | 16,266,000 |  |  |
Patriot Point - DC17 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 6,078,000 |  |  |
Building and Land Improvements | 472,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 6,078,000 |  |  |
Building and Land Improvements | 472,000 |  |  |
Total | 6,550,000 |  |  |
Patriot Ridge [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 18,517,000 |  |  |
Building and Land Improvements | 14,423,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 18,517,000 |  |  |
Building and Land Improvements | 14,423,000 |  |  |
Total | 32,940,000 |  |  |
Redstone Gateway [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 14,250,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 14,250,000 |  |  |
Total | 14,250,000 |  |  |
Route 15/Biggs Ford Road [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,703,000 |  |  |
Building and Land Improvements | 596,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,703,000 |  |  |
Building and Land Improvements | 596,000 |  |  |
Total | 9,299,000 |  |  |
Sentry Gateway [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 8,275,000 |  |  |
Building and Land Improvements | 3,645,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 8,275,000 |  |  |
Building and Land Improvements | 3,645,000 |  |  |
Total | 11,920,000 |  |  |
Sentry Gateway - T [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 14,020,000 |  |  |
Building and Land Improvements | 38,804,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 13,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 14,020,000 |  |  |
Building and Land Improvements | 38,817,000 |  |  |
Total | 52,837,000 |  |  |
Accumulated Depreciation | (8,618,000) |  |  |
Sentry Gateway - V [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 1,066,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 1,066,000 |  |  |
Total | 1,066,000 |  |  |
Accumulated Depreciation | (188,000) |  |  |
Sentry Gateway - W [Member] |  |  |  |
Initial Cost |  |  |  |
Building and Land Improvements | 1,884,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Building and Land Improvements | 1,884,000 |  |  |
Total | 1,884,000 |  |  |
Accumulated Depreciation | (296,000) |  |  |
Sentry Gateway - X [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 21,178,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 21,178,000 |  |  |
Total | 23,142,000 |  |  |
Accumulated Depreciation | (2,728,000) |  |  |
Sentry Gateway - Y [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 21,298,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 21,298,000 |  |  |
Total | 23,262,000 |  |  |
Accumulated Depreciation | (2,745,000) |  |  |
Sentry Gateway - Z [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 30,335,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 1,964,000 |  |  |
Building and Land Improvements | 30,335,000 |  |  |
Total | 32,299,000 |  |  |
Accumulated Depreciation | (616,000) |  |  |
Southpoint Manassas - DC12 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,518,000 |  |  |
Building and Land Improvements | 12,701,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,518,000 |  |  |
Building and Land Improvements | 12,701,000 |  |  |
Total | 17,219,000 |  |  |
Accumulated Depreciation | (127,000) |  |  |
Southpoint Manassas - DC14 [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 4,518,000 |  |  |
Building and Land Improvements | 13,009,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 4,518,000 |  |  |
Building and Land Improvements | 13,009,000 |  |  |
Total | 17,527,000 |  |  |
Accumulated Depreciation | (101,000) |  |  |
Westfields - Park Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 16,418,000 |  |  |
Building and Land Improvements | 7,488,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 16,418,000 |  |  |
Building and Land Improvements | 7,488,000 |  |  |
Total | 23,906,000 |  |  |
Westfields Corporate Center [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,141,000 |  |  |
Building and Land Improvements | 1,423,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 7,141,000 |  |  |
Building and Land Improvements | 1,423,000 |  |  |
Total | 8,564,000 |  |  |
White Marsh [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 7,852,000 |  |  |
Building and Land Improvements | 2,570,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 7,852,000 |  |  |
Building and Land Improvements | 2,570,000 |  |  |
Total | 10,422,000 |  |  |
Woodland Park [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 9,614,000 |  |  |
Building and Land Improvements | 85,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 9,614,000 |  |  |
Building and Land Improvements | 85,000 |  |  |
Total | 9,699,000 |  |  |
Other Developments, including intercompany eliminations [Member] |  |  |  |
Initial Cost |  |  |  |
Land | 94,000 |  |  |
Building and Land Improvements | 34,000 |  |  |
Costs Capitalized Subsequent to Acquisition | 431,000 |  |  |
Gross Amounts Carried at Close of Period |  |  |  |
Land | 94,000 |  |  |
Building and Land Improvements | 465,000 |  |  |
Total | 559,000 |  |  |
Accumulated Depreciation | (39,000) |  |  |
Fair value measurement on a nonrecurring basis [Member] | Real Estate Held [Member] |  |  |  |
Additional information |  |  |  |
Impairment losses | 22,000,000 |  |  |
Fair value measurement on a nonrecurring basis [Member] | Real Estate Investment Properties, Net [Member] |  |  |  |
Additional information |  |  |  |
Impairment losses | $ 23,500,000 | $ 1,400,000 |  |

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