|
Information by Business Segment (Details) (USD $)
In Thousands, unless otherwise specified
|
3 Months Ended |
|
|
Mar. 31, 2015
segment
|
Mar. 31, 2014
|
Dec. 31, 2014
|
| Segment Reporting [Abstract] |
|
|
|
| Number of primary office property segments |
10 |
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
$ 122,710 |
$ 124,896 |
|
| Property operating expenses |
50,686 |
49,752 |
|
| NOI from real estate operations |
72,024 |
75,144 |
|
| Segment assets |
3,777,155 |
3,605,897 |
3,670,257 |
| Operating Segment Total |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
122,710 |
124,896 |
|
| Property operating expenses |
50,686 |
49,752 |
|
| NOI from real estate operations |
72,024 |
75,144 |
|
| Additions to long-lived assets |
71,971 |
13,729 |
|
| Transfers from non-operating properties |
117,272 |
56,940 |
|
| Segment assets |
3,110,380 |
2,932,749 |
|
| Baltimore and Washington Corridor |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
61,792 |
61,113 |
|
| Property operating expenses |
23,583 |
23,597 |
|
| NOI from real estate operations |
38,209 |
37,516 |
|
| Additions to long-lived assets |
3,445 |
5,741 |
|
| Transfers from non-operating properties |
12,930 |
6,911 |
|
| Segment assets |
1,280,742 |
1,244,876 |
|
| Northern Virginia |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
21,749 |
24,968 |
|
| Property operating expenses |
9,121 |
8,973 |
|
| NOI from real estate operations |
12,628 |
15,995 |
|
| Additions to long-lived assets |
2,821 |
3,495 |
|
| Transfers from non-operating properties |
58,571 |
26,588 |
|
| Segment assets |
696,276 |
636,895 |
|
| San Antonio |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
9,171 |
8,479 |
|
| Property operating expenses |
4,975 |
4,474 |
|
| NOI from real estate operations |
4,196 |
4,005 |
|
| Additions to long-lived assets |
21 |
(6) |
|
| Transfers from non-operating properties |
31,091 |
0 |
|
| Segment assets |
147,078 |
117,812 |
|
| Huntsville |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
2,446 |
2,555 |
|
| Property operating expenses |
829 |
653 |
|
| NOI from real estate operations |
1,617 |
1,902 |
|
| Additions to long-lived assets |
83 |
2,507 |
|
| Transfers from non-operating properties |
2,997 |
20,102 |
|
| Segment assets |
99,335 |
99,378 |
|
| Washington, DC - Capitol Riverfront |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
3,364 |
3,634 |
|
| Property operating expenses |
1,814 |
1,765 |
|
| NOI from real estate operations |
1,550 |
1,869 |
|
| Additions to long-lived assets |
393 |
63 |
|
| Transfers from non-operating properties |
0 |
0 |
|
| Segment assets |
94,400 |
97,843 |
|
| St. Mary's and King George Counties |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
3,901 |
4,316 |
|
| Property operating expenses |
1,584 |
1,504 |
|
| NOI from real estate operations |
2,317 |
2,812 |
|
| Additions to long-lived assets |
1,200 |
839 |
|
| Transfers from non-operating properties |
0 |
0 |
|
| Segment assets |
100,849 |
95,645 |
|
| Greater Baltimore |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
11,485 |
11,496 |
|
| Property operating expenses |
4,997 |
5,476 |
|
| NOI from real estate operations |
6,488 |
6,020 |
|
| Additions to long-lived assets |
63,604 |
1,012 |
|
| Transfers from non-operating properties |
0 |
74 |
|
| Segment assets |
334,271 |
300,619 |
|
| Greater Philadelphia |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
3,224 |
3,340 |
|
| Property operating expenses |
1,375 |
1,300 |
|
| NOI from real estate operations |
1,849 |
2,040 |
|
| Additions to long-lived assets |
294 |
11 |
|
| Transfers from non-operating properties |
11,498 |
3,176 |
|
| Segment assets |
117,919 |
94,428 |
|
| Other |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
2,543 |
2,594 |
|
| Property operating expenses |
196 |
322 |
|
| NOI from real estate operations |
2,347 |
2,272 |
|
| Additions to long-lived assets |
80 |
55 |
|
| Transfers from non-operating properties |
8 |
11 |
|
| Segment assets |
77,340 |
79,542 |
|
| Wholesale Data Center |
|
|
|
| Segment financial information for real estate operations |
|
|
|
| Revenues from real estate operations |
3,035 |
2,401 |
|
| Property operating expenses |
2,212 |
1,688 |
|
| NOI from real estate operations |
823 |
713 |
|
| Additions to long-lived assets |
30 |
12 |
|
| Transfers from non-operating properties |
177 |
78 |
|
| Segment assets |
$ 162,170 |
$ 165,711 |
|