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
|
|