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Schedule III - Real Estate and Accumulated Depreciation (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 Years
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | $ 512,391 | [1]
Initial Cost |  |
Land | 666,690 |
Buildings and Improvements | 3,603,754 |
Net Improvements (Retirements Since Acquistion) | 522,640 |
Carrying Amount at Which Carried |  |
Land | 677,891 |
Buildings and Improvements | 4,115,189 |
Total | 4,793,080 | [2]
Accumulated Depreciation at December 31, 2011 | 865,710 | [3]
400 Berwyn Park [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,657 |
Buildings and Improvements | 4,462 |
Net Improvements (Retirements Since Acquistion) | 15,031 |
Carrying Amount at Which Carried |  |
Land | 2,657 |
Buildings and Improvements | 19,493 |
Total | 22,150 | [2]
Accumulated Depreciation at December 31, 2011 | 6,742 | [3]
Depreciable Life (Years) | 40 |
300 Berwyn Park [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 9,971 | [1]
Initial Cost |  |
Land | 2,206 |
Buildings and Improvements | 13,422 |
Net Improvements (Retirements Since Acquistion) | 4,161 |
Carrying Amount at Which Carried |  |
Land | 2,206 |
Buildings and Improvements | 17,583 |
Total | 19,789 | [2]
Accumulated Depreciation at December 31, 2011 | 6,554 | [3]
Depreciable Life (Years) | 40 |
1200 Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 1,887 | [1]
Initial Cost |  |
Land | 2,595 |
Buildings and Improvements | 11,809 |
Net Improvements (Retirements Since Acquistion) | 3,778 |
Carrying Amount at Which Carried |  |
Land | 2,596 |
Buildings and Improvements | 15,586 |
Total | 18,182 | [2]
Accumulated Depreciation at December 31, 2011 | 3,893 | [3]
Depreciable Life (Years) | 40 |
1050 Westlakes Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,611 |
Buildings and Improvements | 10,445 |
Net Improvements (Retirements Since Acquistion) | 5,046 |
Carrying Amount at Which Carried |  |
Land | 2,611 |
Buildings and Improvements | 15,491 |
Total | 18,102 | [2]
Accumulated Depreciation at December 31, 2011 | 5,820 | [3]
Depreciable Life (Years) | 40 |
200 Berwyn Park [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 6,887 | [1]
Initial Cost |  |
Land | 1,533 |
Buildings and Improvements | 9,460 |
Net Improvements (Retirements Since Acquistion) | 1,615 |
Carrying Amount at Which Carried |  |
Land | 1,533 |
Buildings and Improvements | 11,075 |
Total | 12,608 | [2]
Accumulated Depreciation at December 31, 2011 | 4,512 | [3]
Depreciable Life (Years) | 40 |
1080 Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,086 |
Buildings and Improvements | 8,342 |
Net Improvements (Retirements Since Acquistion) | 1,262 |
Carrying Amount at Which Carried |  |
Land | 2,085 |
Buildings and Improvements | 9,605 |
Total | 11,690 | [2]
Accumulated Depreciation at December 31, 2011 | 3,198 | [3]
Depreciable Life (Years) | 40 |
100 Berwyn Park [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 5,299 | [1]
Initial Cost |  |
Land | 1,180 |
Buildings and Improvements | 7,290 |
Net Improvements (Retirements Since Acquistion) | 2,144 |
Carrying Amount at Which Carried |  |
Land | 1,180 |
Buildings and Improvements | 9,434 |
Total | 10,614 | [2]
Accumulated Depreciation at December 31, 2011 | 3,636 | [3]
Depreciable Life (Years) | 40 |
1160 Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,781 |
Buildings and Improvements | 7,124 |
Net Improvements (Retirements Since Acquistion) | 1,071 |
Carrying Amount at Which Carried |  |
Land | 1,781 |
Buildings and Improvements | 8,195 |
Total | 9,976 | [2]
Accumulated Depreciation at December 31, 2011 | 2,690 | [3]
Depreciable Life (Years) | 40 |
1100 Cassett Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,695 |
Buildings and Improvements | 6,779 |
Net Improvements (Retirements Since Acquistion) | 102 |
Carrying Amount at Which Carried |  |
Land | 1,694 |
Buildings and Improvements | 6,882 |
Total | 8,576 | [2]
Accumulated Depreciation at December 31, 2011 | 1,823 | [3]
Depreciable Life (Years) | 40 |
980 Harvest Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,304 |
Buildings and Improvements | 16,960 |
Net Improvements (Retirements Since Acquistion) | (808) |
Carrying Amount at Which Carried |  |
Land | 3,304 |
Buildings and Improvements | 16,152 |
Total | 19,456 | [2]
Accumulated Depreciation at December 31, 2011 | 5,167 | [3]
Depreciable Life (Years) | 40 |
925 Harvest Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,671 |
Buildings and Improvements | 6,606 |
Net Improvements (Retirements Since Acquistion) | 770 |
Carrying Amount at Which Carried |  |
Land | 1,670 |
Buildings and Improvements | 7,377 |
Total | 9,047 | [2]
Accumulated Depreciation at December 31, 2011 | 2,837 | [3]
Depreciable Life (Years) | 40 |
920 Harvest Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,209 |
Buildings and Improvements | 6,595 |
Net Improvements (Retirements Since Acquistion) | (125) |
Carrying Amount at Which Carried |  |
Land | 1,208 |
Buildings and Improvements | 6,471 |
Total | 7,679 | [2]
Accumulated Depreciation at December 31, 2011 | 3,088 | [3]
Depreciable Life (Years) | 40 |
426 Lancaster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,689 |
Buildings and Improvements | 6,756 |
Net Improvements (Retirements Since Acquistion) | 405 |
Carrying Amount at Which Carried |  |
Land | 1,688 |
Buildings and Improvements | 7,162 |
Total | 8,850 | [2]
Accumulated Depreciation at December 31, 2011 | 2,884 | [3]
Depreciable Life (Years) | 40 |
52 Swedesford Square [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,241 |
Buildings and Improvements | 16,579 |
Net Improvements (Retirements Since Acquistion) | 557 |
Carrying Amount at Which Carried |  |
Land | 4,241 |
Buildings and Improvements | 17,136 |
Total | 21,377 | [2]
Accumulated Depreciation at December 31, 2011 | 6,341 | [3]
Depreciable Life (Years) | 40 |
429 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,368 |
Buildings and Improvements | 5,471 |
Net Improvements (Retirements Since Acquistion) | 451 |
Carrying Amount at Which Carried |  |
Land | 1,368 |
Buildings and Improvements | 5,922 |
Total | 7,290 | [2]
Accumulated Depreciation at December 31, 2011 | 1,667 | [3]
Depreciable Life (Years) | 40 |
412 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,195 |
Buildings and Improvements | 4,779 |
Net Improvements (Retirements Since Acquistion) | 1,123 |
Carrying Amount at Which Carried |  |
Land | 1,195 |
Buildings and Improvements | 5,902 |
Total | 7,097 | [2]
Accumulated Depreciation at December 31, 2011 | 1,612 | [3]
Depreciable Life (Years) | 40 |
440 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 982 |
Buildings and Improvements | 3,927 |
Net Improvements (Retirements Since Acquistion) | 1,900 |
Carrying Amount at Which Carried |  |
Land | 982 |
Buildings and Improvements | 5,827 |
Total | 6,809 | [2]
Accumulated Depreciation at December 31, 2011 | 2,124 | [3]
Depreciable Life (Years) | 40 |
436 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 994 |
Buildings and Improvements | 3,978 |
Net Improvements (Retirements Since Acquistion) | 686 |
Carrying Amount at Which Carried |  |
Land | 994 |
Buildings and Improvements | 4,664 |
Total | 5,658 | [2]
Accumulated Depreciation at December 31, 2011 | 1,251 | [3]
Depreciable Life (Years) | 40 |
467 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 906 |
Buildings and Improvements | 3,623 |
Net Improvements (Retirements Since Acquistion) | 1,070 |
Carrying Amount at Which Carried |  |
Land | 906 |
Buildings and Improvements | 4,693 |
Total | 5,599 | [2]
Accumulated Depreciation at December 31, 2011 | 1,353 | [3]
Depreciable Life (Years) | 40 |
100 Arrandale Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 970 |
Buildings and Improvements | 3,878 |
Net Improvements (Retirements Since Acquistion) | 274 |
Carrying Amount at Which Carried |  |
Land | 970 |
Buildings and Improvements | 4,152 |
Total | 5,122 | [2]
Accumulated Depreciation at December 31, 2011 | 1,275 | [3]
Depreciable Life (Years) | 40 |
457 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 777 |
Buildings and Improvements | 3,107 |
Net Improvements (Retirements Since Acquistion) | 1,035 |
Carrying Amount at Which Carried |  |
Land | 777 |
Buildings and Improvements | 4,142 |
Total | 4,919 | [2]
Accumulated Depreciation at December 31, 2011 | 1,062 | [3]
Depreciable Life (Years) | 40 |
486 Thomas Jones Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 806 |
Buildings and Improvements | 3,256 |
Net Improvements (Retirements Since Acquistion) | 605 |
Carrying Amount at Which Carried |  |
Land | 806 |
Buildings and Improvements | 3,861 |
Total | 4,667 | [2]
Accumulated Depreciation at December 31, 2011 | 1,710 | [3]
Depreciable Life (Years) | 40 |
468 Thomas Jones Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 526 |
Buildings and Improvements | 2,112 |
Net Improvements (Retirements Since Acquistion) | 612 |
Carrying Amount at Which Carried |  |
Land | 526 |
Buildings and Improvements | 2,724 |
Total | 3,250 | [2]
Accumulated Depreciation at December 31, 2011 | 972 | [3]
Depreciable Life (Years) | 40 |
456 Creamery Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 635 |
Buildings and Improvements | 2,548 |
Net Improvements (Retirements Since Acquistion) | (48) |
Carrying Amount at Which Carried |  |
Land | 636 |
Buildings and Improvements | 2,499 |
Total | 3,135 | [2]
Accumulated Depreciation at December 31, 2011 | 1,135 | [3]
Depreciable Life (Years) | 40 |
481 John Young Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 496 |
Buildings and Improvements | 1,983 |
Net Improvements (Retirements Since Acquistion) | 14 |
Carrying Amount at Which Carried |  |
Land | 496 |
Buildings and Improvements | 1,997 |
Total | 2,493 | [2]
Accumulated Depreciation at December 31, 2011 | 540 | [3]
Depreciable Life (Years) | 40 |
111 Arrandale Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 262 |
Buildings and Improvements | 1,048 |
Net Improvements (Retirements Since Acquistion) | 125 |
Carrying Amount at Which Carried |  |
Land | 262 |
Buildings and Improvements | 1,173 |
Total | 1,435 | [2]
Accumulated Depreciation at December 31, 2011 | 404 | [3]
Depreciable Life (Years) | 40 |
One Progress Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,399 |
Buildings and Improvements | 5,629 |
Net Improvements (Retirements Since Acquistion) | 4,466 |
Carrying Amount at Which Carried |  |
Land | 1,399 |
Buildings and Improvements | 10,095 |
Total | 11,494 | [2]
Accumulated Depreciation at December 31, 2011 | 2,777 | [3]
Depreciable Life (Years) | 40 |
500 Enterprise Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,303 |
Buildings and Improvements | 5,188 |
Net Improvements (Retirements Since Acquistion) | 3,228 |
Carrying Amount at Which Carried |  |
Land | 1,303 |
Buildings and Improvements | 8,416 |
Total | 9,719 | [2]
Accumulated Depreciation at December 31, 2011 | 2,566 | [3]
Depreciable Life (Years) | 40 |
640 Freedom Business Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,222 |
Buildings and Improvements | 16,891 |
Net Improvements (Retirements Since Acquistion) | 2,964 |
Carrying Amount at Which Carried |  |
Land | 4,222 |
Buildings and Improvements | 19,855 |
Total | 24,077 | [2]
Accumulated Depreciation at December 31, 2011 | 7,867 | [3]
Depreciable Life (Years) | 40 |
555 Croton Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,486 |
Buildings and Improvements | 17,943 |
Net Improvements (Retirements Since Acquistion) | 1,215 |
Carrying Amount at Which Carried |  |
Land | 4,486 |
Buildings and Improvements | 19,158 |
Total | 23,644 | [2]
Accumulated Depreciation at December 31, 2011 | 5,461 | [3]
Depreciable Life (Years) | 40 |
630 Allendale Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,836 |
Buildings and Improvements | 4,028 |
Net Improvements (Retirements Since Acquistion) | 12,275 |
Carrying Amount at Which Carried |  |
Land | 2,636 |
Buildings and Improvements | 16,503 |
Total | 19,139 | [2]
Accumulated Depreciation at December 31, 2011 | 4,385 | [3]
Depreciable Life (Years) | 40 |
1000 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,772 |
Buildings and Improvements | 10,936 |
Net Improvements (Retirements Since Acquistion) | 3,524 |
Carrying Amount at Which Carried |  |
Land | 2,772 |
Buildings and Improvements | 14,460 |
Total | 17,232 | [2]
Accumulated Depreciation at December 31, 2011 | 5,838 | [3]
Depreciable Life (Years) | 40 |
620 Freedom Business Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,770 |
Buildings and Improvements | 11,014 |
Net Improvements (Retirements Since Acquistion) | 3,413 |
Carrying Amount at Which Carried |  |
Land | 2,769 |
Buildings and Improvements | 14,428 |
Total | 17,197 | [2]
Accumulated Depreciation at December 31, 2011 | 6,184 | [3]
Depreciable Life (Years) | 40 |
1060 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,712 |
Buildings and Improvements | 10,953 |
Net Improvements (Retirements Since Acquistion) | 2,378 |
Carrying Amount at Which Carried |  |
Land | 2,712 |
Buildings and Improvements | 13,331 |
Total | 16,043 | [2]
Accumulated Depreciation at December 31, 2011 | 5,006 | [3]
Depreciable Life (Years) | 40 |
1040 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,860 |
Buildings and Improvements | 11,282 |
Net Improvements (Retirements Since Acquistion) | 1,303 |
Carrying Amount at Which Carried |  |
Land | 2,860 |
Buildings and Improvements | 12,585 |
Total | 15,445 | [2]
Accumulated Depreciation at December 31, 2011 | 4,717 | [3]
Depreciable Life (Years) | 40 |
630 Freedom Business Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,773 |
Buildings and Improvements | 11,144 |
Net Improvements (Retirements Since Acquistion) | 1,199 |
Carrying Amount at Which Carried |  |
Land | 2,773 |
Buildings and Improvements | 12,343 |
Total | 15,116 | [2]
Accumulated Depreciation at December 31, 2011 | 4,910 | [3]
Depreciable Life (Years) | 40 |
1020 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,168 |
Buildings and Improvements | 8,576 |
Net Improvements (Retirements Since Acquistion) | 4,117 |
Carrying Amount at Which Carried |  |
Land | 2,168 |
Buildings and Improvements | 12,693 |
Total | 14,861 | [2]
Accumulated Depreciation at December 31, 2011 | 5,079 | [3]
Depreciable Life (Years) | 40 |
610 Freedom Business Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,017 |
Buildings and Improvements | 8,070 |
Net Improvements (Retirements Since Acquistion) | 1,195 |
Carrying Amount at Which Carried |  |
Land | 2,017 |
Buildings and Improvements | 9,265 |
Total | 11,282 | [2]
Accumulated Depreciation at December 31, 2011 | 3,546 | [3]
Depreciable Life (Years) | 40 |
500 North Gulph Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,303 |
Buildings and Improvements | 5,201 |
Net Improvements (Retirements Since Acquistion) | 1,834 |
Carrying Amount at Which Carried |  |
Land | 1,303 |
Buildings and Improvements | 7,035 |
Total | 8,338 | [2]
Accumulated Depreciation at December 31, 2011 | 2,988 | [3]
Depreciable Life (Years) | 40 |
650 Park Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,916 |
Buildings and Improvements | 4,378 |
Net Improvements (Retirements Since Acquistion) | 2,042 |
Carrying Amount at Which Carried |  |
Land | 1,917 |
Buildings and Improvements | 6,419 |
Total | 8,336 | [2]
Accumulated Depreciation at December 31, 2011 | 2,819 | [3]
Depreciable Life (Years) | 40 |
741 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,287 |
Buildings and Improvements | 5,151 |
Net Improvements (Retirements Since Acquistion) | 12 |
Carrying Amount at Which Carried |  |
Land | 1,288 |
Buildings and Improvements | 5,162 |
Total | 6,450 | [2]
Accumulated Depreciation at December 31, 2011 | 1,996 | [3]
Depreciable Life (Years) | 40 |
875 First Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 618 |
Buildings and Improvements | 2,473 |
Net Improvements (Retirements Since Acquistion) | 3,239 |
Carrying Amount at Which Carried |  |
Land | 618 |
Buildings and Improvements | 5,712 |
Total | 6,330 | [2]
Accumulated Depreciation at December 31, 2011 | 2,438 | [3]
Depreciable Life (Years) | 40 |
751-761 Fifth Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,097 |
Buildings and Improvements | 4,391 |
Net Improvements (Retirements Since Acquistion) | 31 |
Carrying Amount at Which Carried |  |
Land | 1,097 |
Buildings and Improvements | 4,422 |
Total | 5,519 | [2]
Accumulated Depreciation at December 31, 2011 | 1,712 | [3]
Depreciable Life (Years) | 40 |
600 Park Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,012 |
Buildings and Improvements | 4,048 |
Net Improvements (Retirements Since Acquistion) | 385 |
Carrying Amount at Which Carried |  |
Land | 1,012 |
Buildings and Improvements | 4,433 |
Total | 5,445 | [2]
Accumulated Depreciation at December 31, 2011 | 1,684 | [3]
Depreciable Life (Years) | 40 |
620 Allendale Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,020 |
Buildings and Improvements | 3,839 |
Net Improvements (Retirements Since Acquistion) | 503 |
Carrying Amount at Which Carried |  |
Land | 1,020 |
Buildings and Improvements | 4,342 |
Total | 5,362 | [2]
Accumulated Depreciation at December 31, 2011 | 1,645 | [3]
Depreciable Life (Years) | 40 |
660 Allendale Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 396 |
Buildings and Improvements | 948 |
Net Improvements (Retirements Since Acquistion) | 2,505 |
Carrying Amount at Which Carried |  |
Land | 1,085 |
Buildings and Improvements | 2,764 |
Total | 3,849 | [2]
Accumulated Depreciation at December 31, 2011 | 42 | [3]
Depreciable Life (Years) | 40 |
640 Allendale Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 439 |
Buildings and Improvements | 432 |
Net Improvements (Retirements Since Acquistion) | 1,553 |
Carrying Amount at Which Carried |  |
Land | 439 |
Buildings and Improvements | 1,985 |
Total | 2,424 | [2]
Accumulated Depreciation at December 31, 2011 | 564 | [3]
Depreciable Life (Years) | 40 |
101 Lindenwood Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,152 |
Buildings and Improvements | 16,606 |
Net Improvements (Retirements Since Acquistion) | 3,331 |
Carrying Amount at Which Carried |  |
Land | 4,152 |
Buildings and Improvements | 19,937 |
Total | 24,089 | [2]
Accumulated Depreciation at December 31, 2011 | 4,954 | [3]
Depreciable Life (Years) | 40 |
301 Lindenwood Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,729 |
Buildings and Improvements | 10,915 |
Net Improvements (Retirements Since Acquistion) | 1,264 |
Carrying Amount at Which Carried |  |
Land | 2,729 |
Buildings and Improvements | 12,179 |
Total | 14,908 | [2]
Accumulated Depreciation at December 31, 2011 | 3,541 | [3]
Depreciable Life (Years) | 40 |
300 Lindenwood Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 848 |
Buildings and Improvements | 3,394 |
Net Improvements (Retirements Since Acquistion) | 1,334 |
Carrying Amount at Which Carried |  |
Land | 849 |
Buildings and Improvements | 4,727 |
Total | 5,576 | [2]
Accumulated Depreciation at December 31, 2011 | 1,532 | [3]
Depreciable Life (Years) | 40 |
1700 Paoli Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 458 |
Buildings and Improvements | 559 |
Net Improvements (Retirements Since Acquistion) | 3,018 |
Carrying Amount at Which Carried |  |
Land | 488 |
Buildings and Improvements | 3,547 |
Total | 4,035 | [2]
Accumulated Depreciation at December 31, 2011 | 977 | [3]
Depreciable Life (Years) | 40 |
100 Lindenwood Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 473 |
Buildings and Improvements | 1,892 |
Net Improvements (Retirements Since Acquistion) | 188 |
Carrying Amount at Which Carried |  |
Land | 474 |
Buildings and Improvements | 2,079 |
Total | 2,553 | [2]
Accumulated Depreciation at December 31, 2011 | 575 | [3]
Depreciable Life (Years) | 40 |
200 Lindenwood Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 324 |
Buildings and Improvements | 1,295 |
Net Improvements (Retirements Since Acquistion) | 335 |
Carrying Amount at Which Carried |  |
Land | 324 |
Buildings and Improvements | 1,630 |
Total | 1,954 | [2]
Accumulated Depreciation at December 31, 2011 | 378 | [3]
Depreciable Life (Years) | 40 |
14 Campus Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 6,384 | [1]
Initial Cost |  |
Land | 2,244 |
Buildings and Improvements | 4,217 |
Net Improvements (Retirements Since Acquistion) | 1,515 |
Carrying Amount at Which Carried |  |
Land | 2,243 |
Buildings and Improvements | 5,733 |
Total | 7,976 | [2]
Accumulated Depreciation at December 31, 2011 | 2,311 | [3]
Depreciable Life (Years) | 40 |
11 Campus Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 4,379 | [1]
Initial Cost |  |
Land | 1,112 |
Buildings and Improvements | 4,067 |
Net Improvements (Retirements Since Acquistion) | 1,047 |
Carrying Amount at Which Carried |  |
Land | 1,112 |
Buildings and Improvements | 5,114 |
Total | 6,226 | [2]
Accumulated Depreciation at December 31, 2011 | 1,836 | [3]
Depreciable Life (Years) | 40 |
17 Campus Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 4,458 | [1]
Initial Cost |  |
Land | 1,108 |
Buildings and Improvements | 5,155 |
Net Improvements (Retirements Since Acquistion) | (397) |
Carrying Amount at Which Carried |  |
Land | 1,108 |
Buildings and Improvements | 4,758 |
Total | 5,866 | [2]
Accumulated Depreciation at December 31, 2011 | 1,098 | [3]
Depreciable Life (Years) | 40 |
15 Campus Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 4,555 | [1]
Initial Cost |  |
Land | 1,164 |
Buildings and Improvements | 3,896 |
Net Improvements (Retirements Since Acquistion) | 229 |
Carrying Amount at Which Carried |  |
Land | 1,164 |
Buildings and Improvements | 4,125 |
Total | 5,289 | [2]
Accumulated Depreciation at December 31, 2011 | 1,016 | [3]
Depreciable Life (Years) | 40 |
18 Campus Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 3,431 | [1]
Initial Cost |  |
Land | 787 |
Buildings and Improvements | 3,312 |
Net Improvements (Retirements Since Acquistion) | 313 |
Carrying Amount at Which Carried |  |
Land | 787 |
Buildings and Improvements | 3,625 |
Total | 4,412 | [2]
Accumulated Depreciation at December 31, 2011 | 1,780 | [3]
Depreciable Life (Years) | 40 |
401 Plymouth Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,198 |
Buildings and Improvements | 16,131 |
Net Improvements (Retirements Since Acquistion) | 15,959 |
Carrying Amount at Which Carried |  |
Land | 6,199 |
Buildings and Improvements | 32,089 |
Total | 38,288 | [2]
Accumulated Depreciation at December 31, 2011 | 8,130 | [3]
Depreciable Life (Years) | 40 |
4000 Chemical Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,373 |
Buildings and Improvements | 24,546 |
Net Improvements (Retirements Since Acquistion) | 4,509 |
Carrying Amount at Which Carried |  |
Land | 4,373 |
Buildings and Improvements | 29,055 |
Total | 33,428 | [2]
Accumulated Depreciation at December 31, 2011 | 4,005 | [3]
Depreciable Life (Years) | 40 |
610 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,651 |
Buildings and Improvements | 14,514 |
Net Improvements (Retirements Since Acquistion) | 3,017 |
Carrying Amount at Which Carried |  |
Land | 3,651 |
Buildings and Improvements | 17,531 |
Total | 21,182 | [2]
Accumulated Depreciation at December 31, 2011 | 4,595 | [3]
Depreciable Life (Years) | 40 |
600 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,652 |
Buildings and Improvements | 15,288 |
Net Improvements (Retirements Since Acquistion) | 1,958 |
Carrying Amount at Which Carried |  |
Land | 3,652 |
Buildings and Improvements | 17,246 |
Total | 20,898 | [2]
Accumulated Depreciation at December 31, 2011 | 4,225 | [3]
Depreciable Life (Years) | 40 |
630 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,558 |
Buildings and Improvements | 14,743 |
Net Improvements (Retirements Since Acquistion) | 2,199 |
Carrying Amount at Which Carried |  |
Land | 3,558 |
Buildings and Improvements | 16,942 |
Total | 20,500 | [2]
Accumulated Depreciation at December 31, 2011 | 4,585 | [3]
Depreciable Life (Years) | 40 |
620 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,572 |
Buildings and Improvements | 14,435 |
Net Improvements (Retirements Since Acquistion) | 1,220 |
Carrying Amount at Which Carried |  |
Land | 3,572 |
Buildings and Improvements | 15,655 |
Total | 19,227 | [2]
Accumulated Depreciation at December 31, 2011 | 3,921 | [3]
Depreciable Life (Years) | 40 |
2240/2250 Butler Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,104 |
Buildings and Improvements | 4,627 |
Net Improvements (Retirements Since Acquistion) | 1,277 |
Carrying Amount at Which Carried |  |
Land | 1,104 |
Buildings and Improvements | 5,904 |
Total | 7,008 | [2]
Accumulated Depreciation at December 31, 2011 | 2,929 | [3]
Depreciable Life (Years) | 40 |
2260 Butler Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 661 |
Buildings and Improvements | 2,727 |
Net Improvements (Retirements Since Acquistion) | 1,198 |
Carrying Amount at Which Carried |  |
Land | 662 |
Buildings and Improvements | 3,924 |
Total | 4,586 | [2]
Accumulated Depreciation at December 31, 2011 | 1,710 | [3]
Depreciable Life (Years) | 40 |
120 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 685 |
Buildings and Improvements | 2,773 |
Net Improvements (Retirements Since Acquistion) | 631 |
Carrying Amount at Which Carried |  |
Land | 685 |
Buildings and Improvements | 3,404 |
Total | 4,089 | [2]
Accumulated Depreciation at December 31, 2011 | 1,481 | [3]
Depreciable Life (Years) | 40 |
140 West Germantown Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 481 |
Buildings and Improvements | 1,976 |
Net Improvements (Retirements Since Acquistion) | 318 |
Carrying Amount at Which Carried |  |
Land | 481 |
Buildings and Improvements | 2,294 |
Total | 2,775 | [2]
Accumulated Depreciation at December 31, 2011 | 1,096 | [3]
Depreciable Life (Years) | 40 |
351 Plymouth Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,043 |
Buildings and Improvements | 555 |
Net Improvements (Retirements Since Acquistion) | 0 |
Carrying Amount at Which Carried |  |
Land | 1,043 |
Buildings and Improvements | 555 |
Total | 1,598 | [2]
Accumulated Depreciation at December 31, 2011 | 94 | [3]
Depreciable Life (Years) | 40 |
150 Radnor Chester Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 11,925 |
Buildings and Improvements | 36,986 |
Net Improvements (Retirements Since Acquistion) | 12,838 |
Carrying Amount at Which Carried |  |
Land | 11,897 |
Buildings and Improvements | 49,852 |
Total | 61,749 | [2]
Accumulated Depreciation at December 31, 2011 | 12,855 | [3]
Depreciable Life (Years) | 29 |
One Radnor Corporate Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,323 |
Buildings and Improvements | 28,613 |
Net Improvements (Retirements Since Acquistion) | 22,241 |
Carrying Amount at Which Carried |  |
Land | 7,323 |
Buildings and Improvements | 50,854 |
Total | 58,177 | [2]
Accumulated Depreciation at December 31, 2011 | 10,296 | [3]
Depreciable Life (Years) | 29 |
201 King of Prussia Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 8,956 |
Buildings and Improvements | 29,811 |
Net Improvements (Retirements Since Acquistion) | 6,700 |
Carrying Amount at Which Carried |  |
Land | 8,949 |
Buildings and Improvements | 36,518 |
Total | 45,467 | [2]
Accumulated Depreciation at December 31, 2011 | 11,783 | [3]
Depreciable Life (Years) | 25 |
555 Lancaster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 8,014 |
Buildings and Improvements | 16,508 |
Net Improvements (Retirements Since Acquistion) | 18,711 |
Carrying Amount at Which Carried |  |
Land | 8,609 |
Buildings and Improvements | 34,624 |
Total | 43,233 | [2]
Accumulated Depreciation at December 31, 2011 | 9,207 | [3]
Depreciable Life (Years) | 24 |
Four Radnor Corporate Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,406 |
Buildings and Improvements | 21,390 |
Net Improvements (Retirements Since Acquistion) | 11,350 |
Carrying Amount at Which Carried |  |
Land | 5,705 |
Buildings and Improvements | 32,441 |
Total | 38,146 | [2]
Accumulated Depreciation at December 31, 2011 | 9,291 | [3]
Depreciable Life (Years) | 30 |
Five Radnor Corporate Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,506 |
Buildings and Improvements | 25,525 |
Net Improvements (Retirements Since Acquistion) | 2,159 |
Carrying Amount at Which Carried |  |
Land | 6,578 |
Buildings and Improvements | 27,612 |
Total | 34,190 | [2]
Accumulated Depreciation at December 31, 2011 | 6,414 | [3]
Depreciable Life (Years) | 38 |
Three Radnor Corporate Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,773 |
Buildings and Improvements | 17,961 |
Net Improvements (Retirements Since Acquistion) | 2,361 |
Carrying Amount at Which Carried |  |
Land | 4,792 |
Buildings and Improvements | 20,303 |
Total | 25,095 | [2]
Accumulated Depreciation at December 31, 2011 | 5,259 | [3]
Depreciable Life (Years) | 29 |
Two Radnor Corporate Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,937 |
Buildings and Improvements | 15,484 |
Net Improvements (Retirements Since Acquistion) | 1,208 |
Carrying Amount at Which Carried |  |
Land | 3,942 |
Buildings and Improvements | 16,687 |
Total | 20,629 | [2]
Accumulated Depreciation at December 31, 2011 | 4,396 | [3]
Depreciable Life (Years) | 29 |
130 Radnor Chester Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,573 |
Buildings and Improvements | 8,338 |
Net Improvements (Retirements Since Acquistion) | 3,542 |
Carrying Amount at Which Carried |  |
Land | 2,568 |
Buildings and Improvements | 11,885 |
Total | 14,453 | [2]
Accumulated Depreciation at December 31, 2011 | 2,788 | [3]
Depreciable Life (Years) | 25 |
170 Radnor Chester Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,514 |
Buildings and Improvements | 8,147 |
Net Improvements (Retirements Since Acquistion) | 3,283 |
Carrying Amount at Which Carried |  |
Land | 2,508 |
Buildings and Improvements | 11,436 |
Total | 13,944 | [2]
Accumulated Depreciation at December 31, 2011 | 3,203 | [3]
Depreciable Life (Years) | 25 |
101 West Elm Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,251 |
Buildings and Improvements | 25,209 |
Net Improvements (Retirements Since Acquistion) | 3,010 |
Carrying Amount at Which Carried |  |
Land | 6,252 |
Buildings and Improvements | 28,218 |
Total | 34,470 | [2]
Accumulated Depreciation at December 31, 2011 | 4,845 | [3]
Depreciable Life (Years) | 40 |
1 West Elm Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,557 |
Buildings and Improvements | 14,249 |
Net Improvements (Retirements Since Acquistion) | 1,128 |
Carrying Amount at Which Carried |  |
Land | 3,557 |
Buildings and Improvements | 15,377 |
Total | 18,934 | [2]
Accumulated Depreciation at December 31, 2011 | 2,497 | [3]
Depreciable Life (Years) | 40 |
595 East Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,729 |
Buildings and Improvements | 10,917 |
Net Improvements (Retirements Since Acquistion) | 2,072 |
Carrying Amount at Which Carried |  |
Land | 2,729 |
Buildings and Improvements | 12,989 |
Total | 15,718 | [2]
Accumulated Depreciation at December 31, 2011 | 2,939 | [3]
Depreciable Life (Years) | 40 |
575 East Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,178 |
Buildings and Improvements | 8,712 |
Net Improvements (Retirements Since Acquistion) | 1,630 |
Carrying Amount at Which Carried |  |
Land | 2,178 |
Buildings and Improvements | 10,342 |
Total | 12,520 | [2]
Accumulated Depreciation at December 31, 2011 | 2,551 | [3]
Depreciable Life (Years) | 40 |
565 East Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,872 |
Buildings and Improvements | 7,489 |
Net Improvements (Retirements Since Acquistion) | 1,785 |
Carrying Amount at Which Carried |  |
Land | 1,872 |
Buildings and Improvements | 9,274 |
Total | 11,146 | [2]
Accumulated Depreciation at December 31, 2011 | 2,208 | [3]
Depreciable Life (Years) | 40 |
585 East Swedesford Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,350 |
Buildings and Improvements | 5,401 |
Net Improvements (Retirements Since Acquistion) | 358 |
Carrying Amount at Which Carried |  |
Land | 1,351 |
Buildings and Improvements | 5,758 |
Total | 7,109 | [2]
Accumulated Depreciation at December 31, 2011 | 1,325 | [3]
Depreciable Life (Years) | 40 |
1336 Enterprise Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 731 |
Buildings and Improvements | 2,946 |
Net Improvements (Retirements Since Acquistion) | 47 |
Carrying Amount at Which Carried |  |
Land | 731 |
Buildings and Improvements | 2,993 |
Total | 3,724 | [2]
Accumulated Depreciation at December 31, 2011 | 1,275 | [3]
Depreciable Life (Years) | 40 |
2970 Market Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 202,905 | [1]
Initial Cost |  |
Land | 22,430 |
Buildings and Improvements | 217,763 |
Net Improvements (Retirements Since Acquistion) | 9,956 |
Carrying Amount at Which Carried |  |
Land | 22,430 |
Buildings and Improvements | 227,719 |
Total | 250,149 | [2]
Accumulated Depreciation at December 31, 2011 | 8,408 | [3]
Depreciable Life (Years) | 40 |
2929 Arch Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 208,570 |
Net Improvements (Retirements Since Acquistion) | 18,366 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 226,936 |
Total | 226,936 | [2]
Accumulated Depreciation at December 31, 2011 | 55,716 | [3]
Depreciable Life (Years) | 40 |
130 North 18th Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 14,496 |
Buildings and Improvements | 107,736 |
Net Improvements (Retirements Since Acquistion) | 10,054 |
Carrying Amount at Which Carried |  |
Land | 14,473 |
Buildings and Improvements | 117,813 |
Total | 132,286 | [2]
Accumulated Depreciation at December 31, 2011 | 28,639 | [3]
Depreciable Life (Years) | 23 |
100 North 18th Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 89,800 | [1]
Initial Cost |  |
Land | 16,066 |
Buildings and Improvements | 100,255 |
Net Improvements (Retirements Since Acquistion) | 5,671 |
Carrying Amount at Which Carried |  |
Land | 16,066 |
Buildings and Improvements | 105,926 |
Total | 121,992 | [2]
Accumulated Depreciation at December 31, 2011 | 26,011 | [3]
Depreciable Life (Years) | 33 |
1717 Arch Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 98,188 |
Net Improvements (Retirements Since Acquistion) | 3,346 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 101,534 |
Total | 101,534 | [2]
Accumulated Depreciation at December 31, 2011 | 7,383 | [3]
Depreciable Life (Years) | 40 |
2930 Chestnut Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 44,379 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 76,008 |
Net Improvements (Retirements Since Acquistion) | 3,064 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 79,072 |
Total | 79,072 | [2]
Accumulated Depreciation at December 31, 2011 | 2,600 | [3]
Depreciable Life (Years) | 40 |
3020 Market Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 21,417 |
Net Improvements (Retirements Since Acquistion) | 20 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 21,437 |
Total | 21,437 | [2]
Accumulated Depreciation at December 31, 2011 | 277 | [3]
Depreciable Life (Years) | 26 |
101-103 Juniper Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 14,401 |
Net Improvements (Retirements Since Acquistion) | 76 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 14,477 |
Total | 14,477 | [2]
Accumulated Depreciation at December 31, 2011 | 212 | [3]
Depreciable Life (Years) | 40 |
Philadelphia Marine Center [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 532 |
Buildings and Improvements | 2,196 |
Net Improvements (Retirements Since Acquistion) | 3,236 |
Carrying Amount at Which Carried |  |
Land | 628 |
Buildings and Improvements | 5,336 |
Total | 5,964 | [2]
Accumulated Depreciation at December 31, 2011 | 1,749 | [3]
Depreciable Life (Years) | 40 |
11720 Beltsville Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,831 |
Buildings and Improvements | 16,661 |
Net Improvements (Retirements Since Acquistion) | 4,047 |
Carrying Amount at Which Carried |  |
Land | 3,903 |
Buildings and Improvements | 20,636 |
Total | 24,539 | [2]
Accumulated Depreciation at December 31, 2011 | 4,357 | [3]
Depreciable Life (Years) | 46 |
11700 Beltsville Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,808 |
Buildings and Improvements | 12,081 |
Net Improvements (Retirements Since Acquistion) | 339 |
Carrying Amount at Which Carried |  |
Land | 2,863 |
Buildings and Improvements | 12,365 |
Total | 15,228 | [2]
Accumulated Depreciation at December 31, 2011 | 2,033 | [3]
Depreciable Life (Years) | 46 |
11710 Beltsville Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,278 |
Buildings and Improvements | 11,100 |
Net Improvements (Retirements Since Acquistion) | (769) |
Carrying Amount at Which Carried |  |
Land | 2,322 |
Buildings and Improvements | 10,288 |
Total | 12,610 | [2]
Accumulated Depreciation at December 31, 2011 | 1,578 | [3]
Depreciable Life (Years) | 46 |
6600 Rockledge Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 37,421 |
Net Improvements (Retirements Since Acquistion) | 11,145 |
Carrying Amount at Which Carried |  |
Land | 0 |
Buildings and Improvements | 48,566 |
Total | 48,566 | [2]
Accumulated Depreciation at December 31, 2011 | 8,529 | [3]
Depreciable Life (Years) | 50 |
11740 Beltsville Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 198 |
Buildings and Improvements | 870 |
Net Improvements (Retirements Since Acquistion) | 42 |
Carrying Amount at Which Carried |  |
Land | 203 |
Buildings and Improvements | 908 |
Total | 1,111 | [2]
Accumulated Depreciation at December 31, 2011 | 146 | [3]
Depreciable Life (Years) | 46 |
12015 Lee Jackson Memorial Highway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,770 |
Buildings and Improvements | 22,895 |
Net Improvements (Retirements Since Acquistion) | 2,702 |
Carrying Amount at Which Carried |  |
Land | 3,841 |
Buildings and Improvements | 25,526 |
Total | 29,367 | [2]
Accumulated Depreciation at December 31, 2011 | 3,937 | [3]
Depreciable Life (Years) | 42 |
11781 Lee Jackson Memorial Highway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,246 |
Buildings and Improvements | 19,836 |
Net Improvements (Retirements Since Acquistion) | (289) |
Carrying Amount at Which Carried |  |
Land | 3,307 |
Buildings and Improvements | 19,487 |
Total | 22,794 | [2]
Accumulated Depreciation at December 31, 2011 | 3,572 | [3]
Depreciable Life (Years) | 40 |
4401 Fair Lakes Court [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,569 |
Buildings and Improvements | 11,982 |
Net Improvements (Retirements Since Acquistion) | 284 |
Carrying Amount at Which Carried |  |
Land | 1,600 |
Buildings and Improvements | 12,236 |
Total | 13,836 | [2]
Accumulated Depreciation at December 31, 2011 | 1,738 | [3]
Depreciable Life (Years) | 52 |
3141 Fairview Park Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 22,000 | [1],[4]
Initial Cost |  |
Land | 5,918 | [4]
Buildings and Improvements | 40,981 | [4]
Net Improvements (Retirements Since Acquistion) | 8,917 | [4]
Carrying Amount at Which Carried |  |
Land | 7,081 | [4]
Buildings and Improvements | 48,736 | [4]
Total | 55,817 | [2],[4]
Accumulated Depreciation at December 31, 2011 | 6,499 | [3],[4]
Depreciable Life (Years) | 51 | [4]
2340 Dulles Corner Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 16,345 |
Buildings and Improvements | 65,379 |
Net Improvements (Retirements Since Acquistion) | 18,370 |
Carrying Amount at Which Carried |  |
Land | 16,129 |
Buildings and Improvements | 83,965 |
Total | 100,094 | [2]
Accumulated Depreciation at December 31, 2011 | 17,616 | [3]
Depreciable Life (Years) | 40 |
13820 Sunrise Valley Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 11,082 |
Buildings and Improvements | 47,290 |
Net Improvements (Retirements Since Acquistion) | 19,687 |
Carrying Amount at Which Carried |  |
Land | 11,082 |
Buildings and Improvements | 66,977 |
Total | 78,059 | [2]
Accumulated Depreciation at December 31, 2011 | 8,334 | [3]
Depreciable Life (Years) | 40 |
2291 Wood Oak Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 8,243 |
Buildings and Improvements | 52,413 |
Net Improvements (Retirements Since Acquistion) | 12,805 |
Carrying Amount at Which Carried |  |
Land | 8,781 |
Buildings and Improvements | 64,680 |
Total | 73,461 | [2]
Accumulated Depreciation at December 31, 2011 | 6,930 | [3]
Depreciable Life (Years) | 55 |
2355 Dulles Corner Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 10,365 |
Buildings and Improvements | 43,876 |
Net Improvements (Retirements Since Acquistion) | 4,418 |
Carrying Amount at Which Carried |  |
Land | 10,364 |
Buildings and Improvements | 48,295 |
Total | 58,659 | [2]
Accumulated Depreciation at December 31, 2011 | 7,804 | [3]
Depreciable Life (Years) | 40 |
196/198 Van Buren Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,931 |
Buildings and Improvements | 43,812 |
Net Improvements (Retirements Since Acquistion) | 6,058 |
Carrying Amount at Which Carried |  |
Land | 8,348 |
Buildings and Improvements | 49,453 |
Total | 57,801 | [2]
Accumulated Depreciation at December 31, 2011 | 7,660 | [3]
Depreciable Life (Years) | 53 |
2251 Corporate Park Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 11,472 |
Buildings and Improvements | 45,893 |
Net Improvements (Retirements Since Acquistion) | 337 |
Carrying Amount at Which Carried |  |
Land | 11,471 |
Buildings and Improvements | 46,231 |
Total | 57,702 | [2]
Accumulated Depreciation at December 31, 2011 | 5,942 | [3]
Depreciable Life (Years) | 40 |
2411 Dulles Corner Park [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,279 |
Buildings and Improvements | 46,340 |
Net Improvements (Retirements Since Acquistion) | 3,691 |
Carrying Amount at Which Carried |  |
Land | 7,416 |
Buildings and Improvements | 49,894 |
Total | 57,310 | [2]
Accumulated Depreciation at December 31, 2011 | 7,736 | [3]
Depreciable Life (Years) | 50 |
2121 Cooperative Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,598 |
Buildings and Improvements | 38,639 |
Net Improvements (Retirements Since Acquistion) | 1,330 |
Carrying Amount at Which Carried |  |
Land | 5,794 |
Buildings and Improvements | 39,772 |
Total | 45,566 | [2]
Accumulated Depreciation at December 31, 2011 | 4,593 | [3]
Depreciable Life (Years) | 54 |
13880 Dulles Corner Lane [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,236 |
Buildings and Improvements | 39,213 |
Net Improvements (Retirements Since Acquistion) | (1,132) |
Carrying Amount at Which Carried |  |
Land | 7,373 |
Buildings and Improvements | 37,943 |
Total | 45,316 | [2]
Accumulated Depreciation at December 31, 2011 | 4,816 | [3]
Depreciable Life (Years) | 55 |
2201 Cooperative Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,809 |
Buildings and Improvements | 34,093 |
Net Improvements (Retirements Since Acquistion) | (678) |
Carrying Amount at Which Carried |  |
Land | 4,809 |
Buildings and Improvements | 33,416 |
Total | 38,225 | [2]
Accumulated Depreciation at December 31, 2011 | 3,936 | [3]
Depreciable Life (Years) | 54 |
13825 Sunrise Valley Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,794 |
Buildings and Improvements | 19,365 |
Net Improvements (Retirements Since Acquistion) | (851) |
Carrying Amount at Which Carried |  |
Land | 3,865 |
Buildings and Improvements | 18,443 |
Total | 22,308 | [2]
Accumulated Depreciation at December 31, 2011 | 2,480 | [3]
Depreciable Life (Years) | 46 |
1676 International Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 61,976 | [1]
Initial Cost |  |
Land | 18,437 |
Buildings and Improvements | 97,538 |
Net Improvements (Retirements Since Acquistion) | 1,650 |
Carrying Amount at Which Carried |  |
Land | 18,785 |
Buildings and Improvements | 98,840 |
Total | 117,625 | [2]
Accumulated Depreciation at December 31, 2011 | 13,100 | [3]
Depreciable Life (Years) | 55 |
8260 Greensboro Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 32,906 | [1]
Initial Cost |  |
Land | 7,952 |
Buildings and Improvements | 33,964 |
Net Improvements (Retirements Since Acquistion) | 242 |
Carrying Amount at Which Carried |  |
Land | 8,103 |
Buildings and Improvements | 34,055 |
Total | 42,158 | [2]
Accumulated Depreciation at December 31, 2011 | 4,509 | [3]
Depreciable Life (Years) | 52 |
1880 Campus Commons Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,164 |
Buildings and Improvements | 28,114 |
Net Improvements (Retirements Since Acquistion) | 1,714 |
Carrying Amount at Which Carried |  |
Land | 6,281 |
Buildings and Improvements | 29,711 |
Total | 35,992 | [2]
Accumulated Depreciation at December 31, 2011 | 3,636 | [3]
Depreciable Life (Years) | 52 |
2273 Research Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,167 |
Buildings and Improvements | 31,110 |
Net Improvements (Retirements Since Acquistion) | 3,179 |
Carrying Amount at Which Carried |  |
Land | 5,237 |
Buildings and Improvements | 34,219 |
Total | 39,456 | [2]
Accumulated Depreciation at December 31, 2011 | 6,197 | [3]
Depreciable Life (Years) | 45 |
2275 Research Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,059 |
Buildings and Improvements | 29,668 |
Net Improvements (Retirements Since Acquistion) | 2,372 |
Carrying Amount at Which Carried |  |
Land | 5,154 |
Buildings and Improvements | 31,945 |
Total | 37,099 | [2]
Accumulated Depreciation at December 31, 2011 | 5,358 | [3]
Depreciable Life (Years) | 45 |
2277 Research Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,649 |
Buildings and Improvements | 26,952 |
Net Improvements (Retirements Since Acquistion) | 823 |
Carrying Amount at Which Carried |  |
Land | 4,733 |
Buildings and Improvements | 27,690 |
Total | 32,423 | [2]
Accumulated Depreciation at December 31, 2011 | 4,304 | [3]
Depreciable Life (Years) | 45 |
1900 Gallows Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,797 |
Buildings and Improvements | 47,817 |
Net Improvements (Retirements Since Acquistion) | 2,978 |
Carrying Amount at Which Carried |  |
Land | 7,944 |
Buildings and Improvements | 50,648 |
Total | 58,592 | [2]
Accumulated Depreciation at December 31, 2011 | 6,300 | [3]
Depreciable Life (Years) | 52 |
8521 Leesburg Pike [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,316 |
Buildings and Improvements | 30,885 |
Net Improvements (Retirements Since Acquistion) | (1,004) |
Carrying Amount at Which Carried |  |
Land | 4,397 |
Buildings and Improvements | 29,799 |
Total | 34,196 | [2]
Accumulated Depreciation at December 31, 2011 | 4,022 | [3]
Depreciable Life (Years) | 51 |
457 Haddonfield Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 11,175 | [1]
Initial Cost |  |
Land | 2,142 |
Buildings and Improvements | 9,120 |
Net Improvements (Retirements Since Acquistion) | 853 |
Carrying Amount at Which Carried |  |
Land | 2,142 |
Buildings and Improvements | 9,973 |
Total | 12,115 | [2]
Accumulated Depreciation at December 31, 2011 | 4,138 | [3]
Depreciable Life (Years) | 40 |
220 Lake Drive East [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,144 |
Buildings and Improvements | 8,798 |
Net Improvements (Retirements Since Acquistion) | 863 |
Carrying Amount at Which Carried |  |
Land | 2,144 |
Buildings and Improvements | 9,661 |
Total | 11,805 | [2]
Accumulated Depreciation at December 31, 2011 | 2,799 | [3]
Depreciable Life (Years) | 40 |
200 Lake Drive East [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,069 |
Buildings and Improvements | 8,275 |
Net Improvements (Retirements Since Acquistion) | 1,244 |
Carrying Amount at Which Carried |  |
Land | 2,068 |
Buildings and Improvements | 9,520 |
Total | 11,588 | [2]
Accumulated Depreciation at December 31, 2011 | 2,559 | [3]
Depreciable Life (Years) | 40 |
210 Lake Drive East [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,645 |
Buildings and Improvements | 6,579 |
Net Improvements (Retirements Since Acquistion) | 1,332 |
Carrying Amount at Which Carried |  |
Land | 1,645 |
Buildings and Improvements | 7,911 |
Total | 9,556 | [2]
Accumulated Depreciation at December 31, 2011 | 2,222 | [3]
Depreciable Life (Years) | 40 |
6 East Clementon Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,345 |
Buildings and Improvements | 5,366 |
Net Improvements (Retirements Since Acquistion) | 682 |
Carrying Amount at Which Carried |  |
Land | 1,345 |
Buildings and Improvements | 6,048 |
Total | 7,393 | [2]
Accumulated Depreciation at December 31, 2011 | 2,303 | [3]
Depreciable Life (Years) | 40 |
20 East Clementon Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 769 |
Buildings and Improvements | 3,055 |
Net Improvements (Retirements Since Acquistion) | 582 |
Carrying Amount at Which Carried |  |
Land | 768 |
Buildings and Improvements | 3,638 |
Total | 4,406 | [2]
Accumulated Depreciation at December 31, 2011 | 1,425 | [3]
Depreciable Life (Years) | 40 |
10 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 244 |
Buildings and Improvements | 971 |
Net Improvements (Retirements Since Acquistion) | 118 |
Carrying Amount at Which Carried |  |
Land | 244 |
Buildings and Improvements | 1,089 |
Total | 1,333 | [2]
Accumulated Depreciation at December 31, 2011 | 450 | [3]
Depreciable Life (Years) | 40 |
7 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 231 |
Buildings and Improvements | 921 |
Net Improvements (Retirements Since Acquistion) | 16 |
Carrying Amount at Which Carried |  |
Land | 231 |
Buildings and Improvements | 937 |
Total | 1,168 | [2]
Accumulated Depreciation at December 31, 2011 | 373 | [3]
Depreciable Life (Years) | 40 |
50 East Clementon Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 114 |
Buildings and Improvements | 964 |
Net Improvements (Retirements Since Acquistion) | 3 |
Carrying Amount at Which Carried |  |
Land | 114 |
Buildings and Improvements | 967 |
Total | 1,081 | [2]
Accumulated Depreciation at December 31, 2011 | 383 | [3]
Depreciable Life (Years) | 40 |
2 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 185 |
Buildings and Improvements | 730 |
Net Improvements (Retirements Since Acquistion) | 16 |
Carrying Amount at Which Carried |  |
Land | 185 |
Buildings and Improvements | 746 |
Total | 931 | [2]
Accumulated Depreciation at December 31, 2011 | 297 | [3]
Depreciable Life (Years) | 40 |
4 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 183 |
Buildings and Improvements | 726 |
Net Improvements (Retirements Since Acquistion) | 5 |
Carrying Amount at Which Carried |  |
Land | 182 |
Buildings and Improvements | 732 |
Total | 914 | [2]
Accumulated Depreciation at December 31, 2011 | 290 | [3]
Depreciable Life (Years) | 40 |
1 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 93 |
Buildings and Improvements | 364 |
Net Improvements (Retirements Since Acquistion) | 76 |
Carrying Amount at Which Carried |  |
Land | 93 |
Buildings and Improvements | 440 |
Total | 533 | [2]
Accumulated Depreciation at December 31, 2011 | 185 | [3]
Depreciable Life (Years) | 40 |
5 U.S. Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 21 |
Buildings and Improvements | 81 |
Net Improvements (Retirements Since Acquistion) | 3 |
Carrying Amount at Which Carried |  |
Land | 21 |
Buildings and Improvements | 84 |
Total | 105 | [2]
Accumulated Depreciation at December 31, 2011 | 33 | [3]
Depreciable Life (Years) | 40 |
5 Foster Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 9 |
Buildings and Improvements | 32 |
Net Improvements (Retirements Since Acquistion) | 26 |
Carrying Amount at Which Carried |  |
Land | 9 |
Buildings and Improvements | 58 |
Total | 67 | [2]
Accumulated Depreciation at December 31, 2011 | 23 | [3]
Depreciable Life (Years) | 40 |
1009 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,876 |
Buildings and Improvements | 19,284 |
Net Improvements (Retirements Since Acquistion) | 4,373 |
Carrying Amount at Which Carried |  |
Land | 5,118 |
Buildings and Improvements | 23,415 |
Total | 28,533 | [2]
Accumulated Depreciation at December 31, 2011 | 9,039 | [3]
Depreciable Life (Years) | 40 |
989 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,701 |
Buildings and Improvements | 14,802 |
Net Improvements (Retirements Since Acquistion) | 1,420 |
Carrying Amount at Which Carried |  |
Land | 3,850 |
Buildings and Improvements | 16,073 |
Total | 19,923 | [2]
Accumulated Depreciation at December 31, 2011 | 3,610 | [3]
Depreciable Life (Years) | 40 |
997 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,410 |
Buildings and Improvements | 9,700 |
Net Improvements (Retirements Since Acquistion) | 4,442 |
Carrying Amount at Which Carried |  |
Land | 2,540 |
Buildings and Improvements | 14,012 |
Total | 16,552 | [2]
Accumulated Depreciation at December 31, 2011 | 4,781 | [3]
Depreciable Life (Years) | 40 |
2000 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,291 |
Buildings and Improvements | 12,221 |
Net Improvements (Retirements Since Acquistion) | 1,975 |
Carrying Amount at Which Carried |  |
Land | 2,684 |
Buildings and Improvements | 13,803 |
Total | 16,487 | [2]
Accumulated Depreciation at December 31, 2011 | 3,499 | [3]
Depreciable Life (Years) | 40 |
993 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,811 |
Buildings and Improvements | 17,996 |
Net Improvements (Retirements Since Acquistion) | (4,369) |
Carrying Amount at Which Carried |  |
Land | 2,960 |
Buildings and Improvements | 13,478 |
Total | 16,438 | [2]
Accumulated Depreciation at December 31, 2011 | 5,196 | [3]
Depreciable Life (Years) | 40 |
1200 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,071 |
Buildings and Improvements | 12,967 |
Net Improvements (Retirements Since Acquistion) | 1,238 |
Carrying Amount at Which Carried |  |
Land | 1,071 |
Buildings and Improvements | 14,205 |
Total | 15,276 | [2]
Accumulated Depreciation at December 31, 2011 | 1,846 | [3]
Depreciable Life (Years) | 40 |
100 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 0 |
Net Improvements (Retirements Since Acquistion) | 12,103 |
Carrying Amount at Which Carried |  |
Land | 1,134 |
Buildings and Improvements | 10,969 |
Total | 12,103 | [2]
Accumulated Depreciation at December 31, 2011 | 1,815 | [3]
Depreciable Life (Years) | 40 |
1000 Lenox Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,174 |
Buildings and Improvements | 4,696 |
Net Improvements (Retirements Since Acquistion) | 2,180 |
Carrying Amount at Which Carried |  |
Land | 1,244 |
Buildings and Improvements | 6,806 |
Total | 8,050 | [2]
Accumulated Depreciation at December 31, 2011 | 2,677 | [3]
Depreciable Life (Years) | 40 |
1120 Executive Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,074 |
Buildings and Improvements | 8,415 |
Net Improvements (Retirements Since Acquistion) | 1,804 |
Carrying Amount at Which Carried |  |
Land | 2,074 |
Buildings and Improvements | 10,219 |
Total | 12,293 | [2]
Accumulated Depreciation at December 31, 2011 | 4,200 | [3]
Depreciable Life (Years) | 40 |
Two Eves Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 818 |
Buildings and Improvements | 3,461 |
Net Improvements (Retirements Since Acquistion) | 178 |
Carrying Amount at Which Carried |  |
Land | 819 |
Buildings and Improvements | 3,638 |
Total | 4,457 | [2]
Accumulated Depreciation at December 31, 2011 | 1,575 | [3]
Depreciable Life (Years) | 40 |
Five Eves Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 703 |
Buildings and Improvements | 2,819 |
Net Improvements (Retirements Since Acquistion) | 511 |
Carrying Amount at Which Carried |  |
Land | 703 |
Buildings and Improvements | 3,330 |
Total | 4,033 | [2]
Accumulated Depreciation at December 31, 2011 | 1,392 | [3]
Depreciable Life (Years) | 40 |
Four B Eves Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 588 |
Buildings and Improvements | 2,369 |
Net Improvements (Retirements Since Acquistion) | 361 |
Carrying Amount at Which Carried |  |
Land | 589 |
Buildings and Improvements | 2,729 |
Total | 3,318 | [2]
Accumulated Depreciation at December 31, 2011 | 1,180 | [3]
Depreciable Life (Years) | 40 |
Four A Eves Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 539 |
Buildings and Improvements | 2,168 |
Net Improvements (Retirements Since Acquistion) | 136 |
Carrying Amount at Which Carried |  |
Land | 538 |
Buildings and Improvements | 2,305 |
Total | 2,843 | [2]
Accumulated Depreciation at December 31, 2011 | 1,011 | [3]
Depreciable Life (Years) | 40 |
308 Harper Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,643 |
Buildings and Improvements | 6,663 |
Net Improvements (Retirements Since Acquistion) | 1,070 |
Carrying Amount at Which Carried |  |
Land | 1,644 |
Buildings and Improvements | 7,732 |
Total | 9,376 | [2]
Accumulated Depreciation at December 31, 2011 | 2,685 | [3]
Depreciable Life (Years) | 40 |
304 Harper Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 657 |
Buildings and Improvements | 2,674 |
Net Improvements (Retirements Since Acquistion) | 359 |
Carrying Amount at Which Carried |  |
Land | 657 |
Buildings and Improvements | 3,033 |
Total | 3,690 | [2]
Accumulated Depreciation at December 31, 2011 | 1,161 | [3]
Depreciable Life (Years) | 40 |
700 East Gate Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,569 |
Buildings and Improvements | 14,436 |
Net Improvements (Retirements Since Acquistion) | 2,122 |
Carrying Amount at Which Carried |  |
Land | 3,568 |
Buildings and Improvements | 16,559 |
Total | 20,127 | [2]
Accumulated Depreciation at December 31, 2011 | 6,205 | [3]
Depreciable Life (Years) | 40 |
10000 Midlantic Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,206 |
Buildings and Improvements | 12,857 |
Net Improvements (Retirements Since Acquistion) | 1,473 |
Carrying Amount at Which Carried |  |
Land | 3,206 |
Buildings and Improvements | 14,330 |
Total | 17,536 | [2]
Accumulated Depreciation at December 31, 2011 | 6,306 | [3]
Depreciable Life (Years) | 40 |
15000 Midlantic Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,061 |
Buildings and Improvements | 12,254 |
Net Improvements (Retirements Since Acquistion) | 1,070 |
Carrying Amount at Which Carried |  |
Land | 3,061 |
Buildings and Improvements | 13,324 |
Total | 16,385 | [2]
Accumulated Depreciation at December 31, 2011 | 5,351 | [3]
Depreciable Life (Years) | 40 |
1000 Atrium Way [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,061 |
Buildings and Improvements | 8,180 |
Net Improvements (Retirements Since Acquistion) | 3,583 |
Carrying Amount at Which Carried |  |
Land | 2,062 |
Buildings and Improvements | 11,762 |
Total | 13,824 | [2]
Accumulated Depreciation at December 31, 2011 | 4,788 | [3]
Depreciable Life (Years) | 40 |
1000 Howard Boulevard [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,297 |
Buildings and Improvements | 9,288 |
Net Improvements (Retirements Since Acquistion) | 1,378 |
Carrying Amount at Which Carried |  |
Land | 2,297 |
Buildings and Improvements | 10,666 |
Total | 12,963 | [2]
Accumulated Depreciation at December 31, 2011 | 4,294 | [3]
Depreciable Life (Years) | 40 |
2000 Midlantic Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,202 |
Buildings and Improvements | 8,823 |
Net Improvements (Retirements Since Acquistion) | 1,905 |
Carrying Amount at Which Carried |  |
Land | 2,203 |
Buildings and Improvements | 10,727 |
Total | 12,930 | [2]
Accumulated Depreciation at December 31, 2011 | 3,953 | [3]
Depreciable Life (Years) | 40 |
701 East Gate Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,736 |
Buildings and Improvements | 6,877 |
Net Improvements (Retirements Since Acquistion) | 1,277 |
Carrying Amount at Which Carried |  |
Land | 1,736 |
Buildings and Improvements | 8,154 |
Total | 9,890 | [2]
Accumulated Depreciation at December 31, 2011 | 2,843 | [3]
Depreciable Life (Years) | 40 |
307 Fellowship Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,565 |
Buildings and Improvements | 6,342 |
Net Improvements (Retirements Since Acquistion) | 1,295 |
Carrying Amount at Which Carried |  |
Land | 1,564 |
Buildings and Improvements | 7,638 |
Total | 9,202 | [2]
Accumulated Depreciation at December 31, 2011 | 2,658 | [3]
Depreciable Life (Years) | 40 |
9000 Midlantic Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,472 |
Buildings and Improvements | 5,895 |
Net Improvements (Retirements Since Acquistion) | 1,785 |
Carrying Amount at Which Carried |  |
Land | 1,471 |
Buildings and Improvements | 7,681 |
Total | 9,152 | [2]
Accumulated Depreciation at December 31, 2011 | 2,608 | [3]
Depreciable Life (Years) | 40 |
305 Fellowship Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,421 |
Buildings and Improvements | 5,768 |
Net Improvements (Retirements Since Acquistion) | 1,440 |
Carrying Amount at Which Carried |  |
Land | 1,421 |
Buildings and Improvements | 7,208 |
Total | 8,629 | [2]
Accumulated Depreciation at December 31, 2011 | 3,050 | [3]
Depreciable Life (Years) | 40 |
309 Fellowship Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,518 |
Buildings and Improvements | 6,154 |
Net Improvements (Retirements Since Acquistion) | 564 |
Carrying Amount at Which Carried |  |
Land | 1,518 |
Buildings and Improvements | 6,718 |
Total | 8,236 | [2]
Accumulated Depreciation at December 31, 2011 | 2,472 | [3]
Depreciable Life (Years) | 40 |
303 Fellowship Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,493 |
Buildings and Improvements | 6,055 |
Net Improvements (Retirements Since Acquistion) | 567 |
Carrying Amount at Which Carried |  |
Land | 1,493 |
Buildings and Improvements | 6,622 |
Total | 8,115 | [2]
Accumulated Depreciation at December 31, 2011 | 2,441 | [3]
Depreciable Life (Years) | 40 |
1000 Bishops Gate [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 934 |
Buildings and Improvements | 6,287 |
Net Improvements (Retirements Since Acquistion) | 427 |
Carrying Amount at Which Carried |  |
Land | 934 |
Buildings and Improvements | 6,714 |
Total | 7,648 | [2]
Accumulated Depreciation at December 31, 2011 | 1,755 | [3]
Depreciable Life (Years) | 40 |
161 Gaither Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,016 |
Buildings and Improvements | 4,064 |
Net Improvements (Retirements Since Acquistion) | 818 |
Carrying Amount at Which Carried |  |
Land | 1,016 |
Buildings and Improvements | 4,882 |
Total | 5,898 | [2]
Accumulated Depreciation at December 31, 2011 | 1,578 | [3]
Depreciable Life (Years) | 40 |
4000 Midlantic Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 714 |
Buildings and Improvements | 5,085 |
Net Improvements (Retirements Since Acquistion) | (1,403) |
Carrying Amount at Which Carried |  |
Land | 714 |
Buildings and Improvements | 3,682 |
Total | 4,396 | [2]
Accumulated Depreciation at December 31, 2011 | 1,810 | [3]
Depreciable Life (Years) | 40 |
815 East Gate Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 636 |
Buildings and Improvements | 2,584 |
Net Improvements (Retirements Since Acquistion) | 253 |
Carrying Amount at Which Carried |  |
Land | 636 |
Buildings and Improvements | 2,837 |
Total | 3,473 | [2]
Accumulated Depreciation at December 31, 2011 | 1,092 | [3]
Depreciable Life (Years) | 40 |
817 East Gate Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 611 |
Buildings and Improvements | 2,426 |
Net Improvements (Retirements Since Acquistion) | 360 |
Carrying Amount at Which Carried |  |
Land | 612 |
Buildings and Improvements | 2,785 |
Total | 3,397 | [2]
Accumulated Depreciation at December 31, 2011 | 1,096 | [3]
Depreciable Life (Years) | 40 |
400 Commerce Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,528 |
Buildings and Improvements | 9,220 |
Net Improvements (Retirements Since Acquistion) | 1,180 |
Carrying Amount at Which Carried |  |
Land | 2,528 |
Buildings and Improvements | 10,400 |
Total | 12,928 | [2]
Accumulated Depreciation at December 31, 2011 | 3,000 | [3]
Depreciable Life (Years) | 40 |
200 Commerce Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 911 |
Buildings and Improvements | 4,414 |
Net Improvements (Retirements Since Acquistion) | 1,018 |
Carrying Amount at Which Carried |  |
Land | 911 |
Buildings and Improvements | 5,432 |
Total | 6,343 | [2]
Accumulated Depreciation at December 31, 2011 | 1,676 | [3]
Depreciable Life (Years) | 40 |
100 Commerce Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,160 |
Buildings and Improvements | 4,633 |
Net Improvements (Retirements Since Acquistion) | 454 |
Carrying Amount at Which Carried |  |
Land | 1,159 |
Buildings and Improvements | 5,088 |
Total | 6,247 | [2]
Accumulated Depreciation at December 31, 2011 | 2,116 | [3]
Depreciable Life (Years) | 40 |
Main Street-Plaza 1000 [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,732 |
Buildings and Improvements | 10,942 |
Net Improvements (Retirements Since Acquistion) | 3,446 |
Carrying Amount at Which Carried |  |
Land | 2,732 |
Buildings and Improvements | 14,388 |
Total | 17,120 | [2]
Accumulated Depreciation at December 31, 2011 | 6,143 | [3]
Depreciable Life (Years) | 40 |
Main Street-Piazza [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 696 |
Buildings and Improvements | 2,802 |
Net Improvements (Retirements Since Acquistion) | 60 |
Carrying Amount at Which Carried |  |
Land | 696 |
Buildings and Improvements | 2,862 |
Total | 3,558 | [2]
Accumulated Depreciation at December 31, 2011 | 1,233 | [3]
Depreciable Life (Years) | 40 |
Main Street-Promenade [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 531 |
Buildings and Improvements | 2,052 |
Net Improvements (Retirements Since Acquistion) | 363 |
Carrying Amount at Which Carried |  |
Land | 531 |
Buildings and Improvements | 2,415 |
Total | 2,946 | [2]
Accumulated Depreciation at December 31, 2011 | 916 | [3]
Depreciable Life (Years) | 40 |
920 North King Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,141 |
Buildings and Improvements | 21,140 |
Net Improvements (Retirements Since Acquistion) | 1,232 |
Carrying Amount at Which Carried |  |
Land | 6,142 |
Buildings and Improvements | 22,371 |
Total | 28,513 | [2]
Accumulated Depreciation at December 31, 2011 | 6,432 | [3]
Depreciable Life (Years) | 30 |
300 Delaware Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,368 |
Buildings and Improvements | 13,739 |
Net Improvements (Retirements Since Acquistion) | 2,942 |
Carrying Amount at Which Carried |  |
Land | 6,369 |
Buildings and Improvements | 16,680 |
Total | 23,049 | [2]
Accumulated Depreciation at December 31, 2011 | 5,121 | [3]
Depreciable Life (Years) | 23 |
Two Righter Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,802 |
Buildings and Improvements | 11,217 |
Net Improvements (Retirements Since Acquistion) | 5,255 |
Carrying Amount at Which Carried |  |
Land | 2,803 |
Buildings and Improvements | 16,471 |
Total | 19,274 | [2]
Accumulated Depreciation at December 31, 2011 | 2,361 | [3]
Depreciable Life (Years) | 40 |
One Righter Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,545 |
Buildings and Improvements | 10,195 |
Net Improvements (Retirements Since Acquistion) | 4,773 |
Carrying Amount at Which Carried |  |
Land | 2,546 |
Buildings and Improvements | 14,967 |
Total | 17,513 | [2]
Accumulated Depreciation at December 31, 2011 | 7,070 | [3]
Depreciable Life (Years) | 40 |
4364 South Alston Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,622 |
Buildings and Improvements | 6,419 |
Net Improvements (Retirements Since Acquistion) | 892 |
Carrying Amount at Which Carried |  |
Land | 1,580 |
Buildings and Improvements | 7,353 |
Total | 8,933 | [2]
Accumulated Depreciation at December 31, 2011 | 2,625 | [3]
Depreciable Life (Years) | 40 |
4805 Lake Brooke Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,640 |
Buildings and Improvements | 6,567 |
Net Improvements (Retirements Since Acquistion) | 1,373 |
Carrying Amount at Which Carried |  |
Land | 1,640 |
Buildings and Improvements | 7,940 |
Total | 9,580 | [2]
Accumulated Depreciation at December 31, 2011 | 3,220 | [3]
Depreciable Life (Years) | 40 |
Overlook II [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 791 |
Buildings and Improvements | 4,503 |
Net Improvements (Retirements Since Acquistion) | 62 |
Carrying Amount at Which Carried |  |
Land | 790 |
Buildings and Improvements | 4,565 |
Total | 5,355 | [2]
Accumulated Depreciation at December 31, 2011 | 188 | [3]
Depreciable Life (Years) | 40 |
Overlook I [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 791 |
Buildings and Improvements | 3,976 |
Net Improvements (Retirements Since Acquistion) | 93 |
Carrying Amount at Which Carried |  |
Land | 790 |
Buildings and Improvements | 4,069 |
Total | 4,859 | [2]
Accumulated Depreciation at December 31, 2011 | 181 | [3]
Depreciable Life (Years) | 40 |
2812 Emerywood Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,069 |
Buildings and Improvements | 4,281 |
Net Improvements (Retirements Since Acquistion) | 1,043 |
Carrying Amount at Which Carried |  |
Land | 1,069 |
Buildings and Improvements | 5,324 |
Total | 6,393 | [2]
Accumulated Depreciation at December 31, 2011 | 2,226 | [3]
Depreciable Life (Years) | 40 |
300 Arboretum Place [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,450 |
Buildings and Improvements | 21,892 |
Net Improvements (Retirements Since Acquistion) | 3,528 |
Carrying Amount at Which Carried |  |
Land | 5,450 |
Buildings and Improvements | 25,420 |
Total | 30,870 | [2]
Accumulated Depreciation at December 31, 2011 | 9,639 | [3]
Depreciable Life (Years) | 40 |
7501 Boulders View Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,669 |
Buildings and Improvements | 19,699 |
Net Improvements (Retirements Since Acquistion) | 1,952 |
Carrying Amount at Which Carried |  |
Land | 4,925 |
Buildings and Improvements | 21,395 |
Total | 26,320 | [2]
Accumulated Depreciation at December 31, 2011 | 2,510 | [3]
Depreciable Life (Years) | 40 |
7300 Beaufont Springs Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,672 |
Buildings and Improvements | 19,689 |
Net Improvements (Retirements Since Acquistion) | 670 |
Carrying Amount at Which Carried |  |
Land | 4,922 |
Buildings and Improvements | 20,109 |
Total | 25,031 | [2]
Accumulated Depreciation at December 31, 2011 | 2,256 | [3]
Depreciable Life (Years) | 40 |
6800 Paragon Place [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,552 |
Buildings and Improvements | 18,414 |
Net Improvements (Retirements Since Acquistion) | 1,549 |
Carrying Amount at Which Carried |  |
Land | 4,552 |
Buildings and Improvements | 19,963 |
Total | 24,515 | [2]
Accumulated Depreciation at December 31, 2011 | 3,110 | [3]
Depreciable Life (Years) | 40 |
6802 Paragon Place [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,917 |
Buildings and Improvements | 11,454 |
Net Improvements (Retirements Since Acquistion) | 2,469 |
Carrying Amount at Which Carried |  |
Land | 2,917 |
Buildings and Improvements | 13,923 |
Total | 16,840 | [2]
Accumulated Depreciation at December 31, 2011 | 3,638 | [3]
Depreciable Life (Years) | 40 |
1025 Boulders Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,574 |
Buildings and Improvements | 11,297 |
Net Improvements (Retirements Since Acquistion) | 1,146 |
Carrying Amount at Which Carried |  |
Land | 2,825 |
Buildings and Improvements | 12,192 |
Total | 15,017 | [2]
Accumulated Depreciation at December 31, 2011 | 1,364 | [3]
Depreciable Life (Years) | 40 |
2100-2116 West Laburnam Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,482 |
Buildings and Improvements | 8,846 |
Net Improvements (Retirements Since Acquistion) | 3,073 |
Carrying Amount at Which Carried |  |
Land | 2,482 |
Buildings and Improvements | 11,919 |
Total | 14,401 | [2]
Accumulated Depreciation at December 31, 2011 | 4,497 | [3]
Depreciable Life (Years) | 40 |
7401 Beaufont Springs Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,349 |
Buildings and Improvements | 10,396 |
Net Improvements (Retirements Since Acquistion) | 717 |
Carrying Amount at Which Carried |  |
Land | 2,599 |
Buildings and Improvements | 10,863 |
Total | 13,462 | [2]
Accumulated Depreciation at December 31, 2011 | 1,201 | [3]
Depreciable Life (Years) | 40 |
7325 Beaufont Springs Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,344 |
Buildings and Improvements | 10,377 |
Net Improvements (Retirements Since Acquistion) | 502 |
Carrying Amount at Which Carried |  |
Land | 2,594 |
Buildings and Improvements | 10,629 |
Total | 13,223 | [2]
Accumulated Depreciation at December 31, 2011 | 1,307 | [3]
Depreciable Life (Years) | 40 |
6806 Paragon Place [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 0 |
Buildings and Improvements | 10,288 |
Net Improvements (Retirements Since Acquistion) | 827 |
Carrying Amount at Which Carried |  |
Land | 403 |
Buildings and Improvements | 10,712 |
Total | 11,115 | [2]
Accumulated Depreciation at December 31, 2011 | 2,573 | [3]
Depreciable Life (Years) | 40 |
9011 Arboretum Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,857 |
Buildings and Improvements | 7,702 |
Net Improvements (Retirements Since Acquistion) | 832 |
Carrying Amount at Which Carried |  |
Land | 1,856 |
Buildings and Improvements | 8,535 |
Total | 10,391 | [2]
Accumulated Depreciation at December 31, 2011 | 3,333 | [3]
Depreciable Life (Years) | 40 |
2511 Brittons Hill Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,202 |
Buildings and Improvements | 4,820 |
Net Improvements (Retirements Since Acquistion) | 1,472 |
Carrying Amount at Which Carried |  |
Land | 1,202 |
Buildings and Improvements | 6,292 |
Total | 7,494 | [2]
Accumulated Depreciation at December 31, 2011 | 2,472 | [3]
Depreciable Life (Years) | 40 |
9100 Arboretum Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,362 |
Buildings and Improvements | 5,489 |
Net Improvements (Retirements Since Acquistion) | 565 |
Carrying Amount at Which Carried |  |
Land | 1,362 |
Buildings and Improvements | 6,054 |
Total | 7,416 | [2]
Accumulated Depreciation at December 31, 2011 | 2,298 | [3]
Depreciable Life (Years) | 40 |
100 Gateway Centre Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 391 |
Buildings and Improvements | 5,410 |
Net Improvements (Retirements Since Acquistion) | 885 |
Carrying Amount at Which Carried |  |
Land | 391 |
Buildings and Improvements | 6,295 |
Total | 6,686 | [2]
Accumulated Depreciation at December 31, 2011 | 1,878 | [3]
Depreciable Life (Years) | 40 |
9200 Arboretum Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 985 |
Buildings and Improvements | 3,973 |
Net Improvements (Retirements Since Acquistion) | 1,353 |
Carrying Amount at Which Carried |  |
Land | 984 |
Buildings and Improvements | 5,327 |
Total | 6,311 | [2]
Accumulated Depreciation at December 31, 2011 | 1,819 | [3]
Depreciable Life (Years) | 40 |
9210 Arboretum Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,110 |
Buildings and Improvements | 4,474 |
Net Improvements (Retirements Since Acquistion) | 486 |
Carrying Amount at Which Carried |  |
Land | 1,110 |
Buildings and Improvements | 4,960 |
Total | 6,070 | [2]
Accumulated Depreciation at December 31, 2011 | 1,839 | [3]
Depreciable Life (Years) | 40 |
2201-2245 Tomlynn Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,020 |
Buildings and Improvements | 4,067 |
Net Improvements (Retirements Since Acquistion) | 447 |
Carrying Amount at Which Carried |  |
Land | 1,019 |
Buildings and Improvements | 4,515 |
Total | 5,534 | [2]
Accumulated Depreciation at December 31, 2011 | 1,620 | [3]
Depreciable Life (Years) | 40 |
9211 Arboretum Parkway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 582 |
Buildings and Improvements | 2,433 |
Net Improvements (Retirements Since Acquistion) | 252 |
Carrying Amount at Which Carried |  |
Land | 582 |
Buildings and Improvements | 2,685 |
Total | 3,267 | [2]
Accumulated Depreciation at December 31, 2011 | 1,048 | [3]
Depreciable Life (Years) | 40 |
2212-2224 Tomlynn Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 502 |
Buildings and Improvements | 2,014 |
Net Improvements (Retirements Since Acquistion) | 353 |
Carrying Amount at Which Carried |  |
Land | 502 |
Buildings and Improvements | 2,367 |
Total | 2,869 | [2]
Accumulated Depreciation at December 31, 2011 | 779 | [3]
Depreciable Life (Years) | 40 |
2244 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 550 |
Buildings and Improvements | 2,203 |
Net Improvements (Retirements Since Acquistion) | 37 |
Carrying Amount at Which Carried |  |
Land | 550 |
Buildings and Improvements | 2,240 |
Total | 2,790 | [2]
Accumulated Depreciation at December 31, 2011 | 837 | [3]
Depreciable Life (Years) | 40 |
2248 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 512 |
Buildings and Improvements | 2,049 |
Net Improvements (Retirements Since Acquistion) | 223 |
Carrying Amount at Which Carried |  |
Land | 512 |
Buildings and Improvements | 2,272 |
Total | 2,784 | [2]
Accumulated Depreciation at December 31, 2011 | 854 | [3]
Depreciable Life (Years) | 40 |
2221-2245 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 530 |
Buildings and Improvements | 2,123 |
Net Improvements (Retirements Since Acquistion) | 80 |
Carrying Amount at Which Carried |  |
Land | 529 |
Buildings and Improvements | 2,204 |
Total | 2,733 | [2]
Accumulated Depreciation at December 31, 2011 | 804 | [3]
Depreciable Life (Years) | 40 |
2277 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 507 |
Buildings and Improvements | 2,034 |
Net Improvements (Retirements Since Acquistion) | 61 |
Carrying Amount at Which Carried |  |
Land | 507 |
Buildings and Improvements | 2,095 |
Total | 2,602 | [2]
Accumulated Depreciation at December 31, 2011 | 751 | [3]
Depreciable Life (Years) | 40 |
2246 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 455 |
Buildings and Improvements | 1,822 |
Net Improvements (Retirements Since Acquistion) | 18 |
Carrying Amount at Which Carried |  |
Land | 455 |
Buildings and Improvements | 1,840 |
Total | 2,295 | [2]
Accumulated Depreciation at December 31, 2011 | 682 | [3]
Depreciable Life (Years) | 40 |
2161-2179 Tomlynn Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 423 |
Buildings and Improvements | 1,695 |
Net Improvements (Retirements Since Acquistion) | 68 |
Carrying Amount at Which Carried |  |
Land | 423 |
Buildings and Improvements | 1,763 |
Total | 2,186 | [2]
Accumulated Depreciation at December 31, 2011 | 640 | [3]
Depreciable Life (Years) | 40 |
2251 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 387 |
Buildings and Improvements | 1,552 |
Net Improvements (Retirements Since Acquistion) | 138 |
Carrying Amount at Which Carried |  |
Land | 387 |
Buildings and Improvements | 1,690 |
Total | 2,077 | [2]
Accumulated Depreciation at December 31, 2011 | 636 | [3]
Depreciable Life (Years) | 40 |
2256 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 356 |
Buildings and Improvements | 1,427 |
Net Improvements (Retirements Since Acquistion) | 273 |
Carrying Amount at Which Carried |  |
Land | 356 |
Buildings and Improvements | 1,700 |
Total | 2,056 | [2]
Accumulated Depreciation at December 31, 2011 | 676 | [3]
Depreciable Life (Years) | 40 |
2130-2146 Tomlynn Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 353 |
Buildings and Improvements | 1,416 |
Net Improvements (Retirements Since Acquistion) | 213 |
Carrying Amount at Which Carried |  |
Land | 353 |
Buildings and Improvements | 1,629 |
Total | 1,982 | [2]
Accumulated Depreciation at December 31, 2011 | 681 | [3]
Depreciable Life (Years) | 40 |
2120 Tomlynn Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 281 |
Buildings and Improvements | 1,125 |
Net Improvements (Retirements Since Acquistion) | 204 |
Carrying Amount at Which Carried |  |
Land | 280 |
Buildings and Improvements | 1,330 |
Total | 1,610 | [2]
Accumulated Depreciation at December 31, 2011 | 475 | [3]
Depreciable Life (Years) | 40 |
2240 Dabney Road [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 264 |
Buildings and Improvements | 1,059 |
Net Improvements (Retirements Since Acquistion) | 11 |
Carrying Amount at Which Carried |  |
Land | 264 |
Buildings and Improvements | 1,069 |
Total | 1,333 | [2]
Accumulated Depreciation at December 31, 2011 | 396 | [3]
Depreciable Life (Years) | 40 |
Boulders Land [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,256 |
Buildings and Improvements | 0 |
Net Improvements (Retirements Since Acquistion) | 3 |
Carrying Amount at Which Carried |  |
Land | 1,259 |
Buildings and Improvements | 0 |
Total | 1,259 | [2]
Accumulated Depreciation at December 31, 2011 | 0 | [3]
5780 & 5790 Fleet Street [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,073 |
Buildings and Improvements | 22,907 |
Net Improvements (Retirements Since Acquistion) | 3,435 |
Carrying Amount at Which Carried |  |
Land | 7,516 |
Buildings and Improvements | 25,899 |
Total | 33,415 | [2]
Accumulated Depreciation at December 31, 2011 | 3,596 | [3]
Depreciable Life (Years) | 55 |
5900 & 5950 La Place Court [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,706 |
Buildings and Improvements | 11,185 |
Net Improvements (Retirements Since Acquistion) | 2,090 |
Carrying Amount at Which Carried |  |
Land | 3,955 |
Buildings and Improvements | 13,026 |
Total | 16,981 | [2]
Accumulated Depreciation at December 31, 2011 | 2,090 | [3]
Depreciable Life (Years) | 48 |
5963 La Place Court [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,824 |
Buildings and Improvements | 9,413 |
Net Improvements (Retirements Since Acquistion) | 1,662 |
Carrying Amount at Which Carried |  |
Land | 2,999 |
Buildings and Improvements | 10,900 |
Total | 13,899 | [2]
Accumulated Depreciation at December 31, 2011 | 1,647 | [3]
Depreciable Life (Years) | 55 |
5973 Avenida Encinas [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,121 |
Buildings and Improvements | 8,361 |
Net Improvements (Retirements Since Acquistion) | 1,383 |
Carrying Amount at Which Carried |  |
Land | 2,256 |
Buildings and Improvements | 9,609 |
Total | 11,865 | [2]
Accumulated Depreciation at December 31, 2011 | 1,803 | [3]
Depreciable Life (Years) | 45 |
2035 Corte Del Nogal [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,261 |
Buildings and Improvements | 6,077 |
Net Improvements (Retirements Since Acquistion) | 1,250 |
Carrying Amount at Which Carried |  |
Land | 3,499 |
Buildings and Improvements | 7,089 |
Total | 10,588 | [2]
Accumulated Depreciation at December 31, 2011 | 1,484 | [3]
Depreciable Life (Years) | 39 |
1200 Concord Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,395 |
Buildings and Improvements | 24,664 |
Net Improvements (Retirements Since Acquistion) | 235 |
Carrying Amount at Which Carried |  |
Land | 6,515 |
Buildings and Improvements | 24,778 |
Total | 31,293 | [2]
Accumulated Depreciation at December 31, 2011 | 4,215 | [3]
Depreciable Life (Years) | 34 |
1220 Concord Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 6,476 |
Buildings and Improvements | 24,966 |
Net Improvements (Retirements Since Acquistion) | (332) |
Carrying Amount at Which Carried |  |
Land | 6,476 |
Buildings and Improvements | 24,634 |
Total | 31,110 | [2]
Accumulated Depreciation at December 31, 2011 | 3,911 | [3]
Depreciable Life (Years) | 34 |
155 Grand Avenue [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 13,556 |
Buildings and Improvements | 54,266 |
Net Improvements (Retirements Since Acquistion) | 4,482 |
Carrying Amount at Which Carried |  |
Land | 13,555 |
Buildings and Improvements | 58,749 |
Total | 72,304 | [2]
Accumulated Depreciation at December 31, 2011 | 7,863 | [3]
Depreciable Life (Years) | 40 |
Two Kaiser Plaza [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 7,841 |
Buildings and Improvements | 0 |
Net Improvements (Retirements Since Acquistion) | 0 |
Carrying Amount at Which Carried |  |
Land | 7,841 |
Buildings and Improvements | 0 |
Total | 7,841 | [2]
Accumulated Depreciation at December 31, 2011 | 0 | [3]
Oakland Lot B [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,342 |
Buildings and Improvements | 0 |
Net Improvements (Retirements Since Acquistion) | 0 |
Carrying Amount at Which Carried |  |
Land | 4,342 |
Buildings and Improvements | 0 |
Total | 4,342 | [2]
Accumulated Depreciation at December 31, 2011 | 0 | [3]
16870 W Bernardo Drive [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 2,979 |
Buildings and Improvements | 15,896 |
Net Improvements (Retirements Since Acquistion) | 1,766 |
Carrying Amount at Which Carried |  |
Land | 3,154 |
Buildings and Improvements | 17,487 |
Total | 20,641 | [2]
Accumulated Depreciation at December 31, 2011 | 2,562 | [3]
Depreciable Life (Years) | 56 |
1250 Capital of Texas Hwy South [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 5,152 |
Buildings and Improvements | 37,928 |
Net Improvements (Retirements Since Acquistion) | 5,826 |
Carrying Amount at Which Carried |  |
Land | 5,247 |
Buildings and Improvements | 43,659 |
Total | 48,906 | [2]
Accumulated Depreciation at December 31, 2011 | 7,063 | [3]
Depreciable Life (Years) | 52 |
1301 Mopac Expressway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 4,188 |
Buildings and Improvements | 41,229 |
Net Improvements (Retirements Since Acquistion) | (595) |
Carrying Amount at Which Carried |  |
Land | 4,251 |
Buildings and Improvements | 40,571 |
Total | 44,822 | [2]
Accumulated Depreciation at December 31, 2011 | 5,732 | [3]
Depreciable Life (Years) | 55 |
1221 Mopac Expressway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,290 |
Buildings and Improvements | 31,548 |
Net Improvements (Retirements Since Acquistion) | 4,228 |
Carrying Amount at Which Carried |  |
Land | 3,369 |
Buildings and Improvements | 35,696 |
Total | 39,065 | [2]
Accumulated Depreciation at December 31, 2011 | 3,900 | [3]
Depreciable Life (Years) | 55 |
1601 Mopac Expressway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,538 |
Buildings and Improvements | 34,346 |
Net Improvements (Retirements Since Acquistion) | 220 |
Carrying Amount at Which Carried |  |
Land | 3,605 |
Buildings and Improvements | 34,499 |
Total | 38,104 | [2]
Accumulated Depreciation at December 31, 2011 | 4,390 | [3]
Depreciable Life (Years) | 54 |
1501 South Mopac Expressway [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 3,698 |
Buildings and Improvements | 34,912 |
Net Improvements (Retirements Since Acquistion) | (2,202) |
Carrying Amount at Which Carried |  |
Land | 3,767 |
Buildings and Improvements | 32,640 |
Total | 36,407 | [2]
Accumulated Depreciation at December 31, 2011 | 3,889 | [3]
Depreciable Life (Years) | 53 |
3711 South Mopac Expressway - II [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,688 |
Buildings and Improvements | 19,229 |
Net Improvements (Retirements Since Acquistion) | 4,316 |
Carrying Amount at Which Carried |  |
Land | 1,688 |
Buildings and Improvements | 23,545 |
Total | 25,233 | [2]
Accumulated Depreciation at December 31, 2011 | 3,660 | [3]
Depreciable Life (Years) | 40 |
3711 South Mopac Expressway - I [Member] |  |
Real Estate and Accumulated Depreciation [Line Items] |  |
Encumbrances at December 31, 2011 | 0 | [1]
Initial Cost |  |
Land | 1,688 |
Buildings and Improvements | 21,011 |
Net Improvements (Retirements Since Acquistion) | 2,451 |
Carrying Amount at Which Carried |  |
Land | 1,688 |
Buildings and Improvements | 23,462 |
Total | 25,150 | [2]
Accumulated Depreciation at December 31, 2011 | $ 2,262 | [3]
Depreciable Life (Years) | 40 |
[1] | Excludes the effect of any net interest premium/(discount).
[2] | Reconciliation of Real Estate:The following table reconciles the real estate investments from January 1, 2009 to December 31, 2011 (in thousands): 2011 2010 2009Balance at beginning of year$4,834,111 $4,512,618 $4,608,320Additions: Acquisitions31,454 102,475 —Capital expenditures133,550 336,281 80,506Less: Dispositions(206,035) (117,263) (176,208)Balance at end of year$4,793,080 $4,834,111 $4,512,618
[3] | Reconciliation of Accumulated Depreciation:The following table reconciles the accumulated depreciation on real estate investments from January 1, 2009 to December 31, 2011 (in thousands): 2011 2010 2009Balance at beginning of year$776,078 $716,957 $639,688Additions: Depreciation expense — continuing operations157,691 133,740 141,309Depreciation expense — discontinued operations1,185 1,554 6,494Less: Dispositions(69,244) (76,173) (70,534)Balance at end of year$865,710 $776,078 $716,957
[4] | This property was contributed to an unconsolidated real estate venture, however, the Company will continue to consolidate this property due to its continuing involvement in this property resulting from its ongoing lease at this property and its 50% ownership interest in the venture. Please see Note 3 to the consolidated financial financial statements for additional information.

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- Definition The amount of accumulated depreciation for the property as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
Name: | us-gaap_RealEstateAndAccumulatedDepreciationAccumulatedDepreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition The amount of a lien or mortgage outstanding as of the balance sheet date on a specific property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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- Definition The carrying amount at which buildings and improvements are carried at the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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- Definition The carrying amount at which land is carried at the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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- Definition Gross amount at which land and buildings and improvements are carried at the end of the period for each property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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- Definition Carrying amount as of the balance sheet date of improvements made to the property and capitalized after acquisition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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- Definition Initial cost to the Entity for buildings and improvements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 970 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-28) -URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule III -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 28 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule III) -URI http://asc.fasb.org/extlink&oid=6882300&loc=d3e5864-122674 + Details
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