Quarterly report pursuant to Section 13 or 15(d)

Information by Business Segment (Details)

v2.3.0.15
Information by Business Segment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2011
Year
property
segment
Sep. 30, 2010
Sep. 30, 2011
sqfeet
Year
property
segment
Sep. 30, 2010
Dec. 31, 2010
Information by Business Segment          
Number of primary office property segments 9   9    
Segment financial information for real estate operations          
Revenues from real estate operations $ 125,129 $ 115,028 $ 368,376 $ 338,015  
Property operating expenses 48,712 44,304 145,071 132,744  
NOI from real estate operations 76,417 70,724 223,305 205,271  
Segment assets 3,965,392   3,965,392   3,844,517
Operating Segment Total
         
Segment financial information for real estate operations          
Revenues from real estate operations 125,129 115,028 368,376 338,015  
Property operating expenses 48,712 44,304 145,071 132,744  
NOI from real estate operations 76,417 70,724 223,305 205,271  
Additions to properties, net 111,356 259,568 262,703 405,290  
Segment assets 3,965,392 3,737,372 3,965,392 3,737,372  
Baltimore/Washington Corridor
         
Segment financial information for real estate operations          
Revenues from real estate operations 54,744 51,946 160,856 154,627  
Property operating expenses 19,905 18,945 59,620 57,953  
NOI from real estate operations 34,839 33,001 101,236 96,674  
Additions to properties, net 22,208 19,097 65,551 67,313  
Segment assets 1,414,086 1,382,234 1,414,086 1,382,234  
Greater Baltimore
         
Segment financial information for real estate operations          
Revenues from real estate operations 18,193 18,288 53,651 52,980  
Property operating expenses 7,621 7,828 23,430 24,149  
NOI from real estate operations 10,572 10,460 30,221 28,831  
Additions to properties, net 2,706 14,578 20,390 29,737  
Segment assets 551,942 584,429 551,942 584,429  
Northern Virginia
         
Segment financial information for real estate operations          
Revenues from real estate operations 18,640 18,949 55,359 55,780  
Property operating expenses 7,364 7,195 22,409 21,214  
NOI from real estate operations 11,276 11,754 32,950 34,566  
Additions to properties, net 20,402 7,302 39,716 44,896  
Segment assets 571,940 487,898 571,940 487,898  
Colorado Springs
         
Segment financial information for real estate operations          
Revenues from real estate operations 6,037 6,176 17,869 18,662  
Property operating expenses 2,573 2,380 7,086 6,928  
NOI from real estate operations 3,464 3,796 10,783 11,734  
Additions to properties, net 1,293 1,028 2,712 2,541  
Segment assets 261,255 266,228 261,255 266,228  
Suburban Maryland
         
Segment financial information for real estate operations          
Revenues from real estate operations 5,648 5,243 16,582 16,524  
Property operating expenses 2,021 2,618 6,973 7,518  
NOI from real estate operations 3,627 2,625 9,609 9,006  
Additions to properties, net 4,372 1,373 7,935 3,454  
Segment assets 176,336 175,181 176,336 175,181  
San Antonio
         
Segment financial information for real estate operations          
Revenues from real estate operations 7,701 5,609 22,453 13,775  
Property operating expenses 3,897 2,697 10,974 6,426  
NOI from real estate operations 3,804 2,912 11,479 7,349  
Additions to properties, net 1,021 5,701 5,710 16,199  
Segment assets 159,238 151,058 159,238 151,058  
Washington, DC - Capitol Riverfront
         
Segment financial information for real estate operations          
Revenues from real estate operations 4,507 135 13,349 135  
Property operating expenses 1,808 50 5,092 50  
NOI from real estate operations 2,699 85 8,257 85  
Additions to properties, net (262) 92,816 433 92,816  
Segment assets 114,249 122,737 114,249 122,737  
Greater Philadelphia
         
Segment financial information for real estate operations          
Revenues from real estate operations 1,701 1,793 5,315 4,505  
Property operating expenses 462 232 1,283 1,795  
NOI from real estate operations 1,239 1,561 4,032 2,710  
Additions to properties, net 4,786 2,187 10,819 18,518  
Segment assets 133,077 121,695 133,077 121,695  
St. Mary's and King George Counties
         
Segment financial information for real estate operations          
Revenues from real estate operations 3,508 3,431 10,606 10,550  
Property operating expenses 1,143 1,152 3,129 3,300  
NOI from real estate operations 2,365 2,279 7,477 7,250  
Additions to properties, net 2,795 3,445 9,939 3,988  
Segment assets 104,732 96,813 104,732 96,813  
Wholesale Data Center
         
Segment financial information for real estate operations          
Revenues from real estate operations 1,283 162 3,769 162  
Property operating expenses 1,054 251 2,591 251  
NOI from real estate operations 229 (89) 1,178 (89)  
Additions to properties, net 21,941 111,510 61,322 111,510  
Segment assets 190,495 115,722 190,495 115,722  
Other
         
Segment financial information for real estate operations          
Revenues from real estate operations 3,167 3,296 8,567 10,315  
Property operating expenses 864 956 2,484 3,160  
NOI from real estate operations 2,303 2,340 6,083 7,155  
Additions to properties, net 30,094 531 38,176 14,318  
Segment assets $ 288,042 $ 233,377 $ 288,042 $ 233,377