Information by Business Segment (Details) - USD ($)
$ in Thousands |
3 Months Ended |
9 Months Ended |
|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
$ 130,954
|
$ 133,686
|
$ 397,965
|
$ 384,591
|
|
| Property operating expenses |
49,952
|
48,897
|
149,968
|
145,990
|
|
| UJV NOI allocable to COPT |
1,008
|
0
|
1,008
|
0
|
|
| NOI from real estate operations |
82,010
|
84,789
|
249,005
|
238,601
|
|
| Additions to long-lived assets |
22,232
|
141,037
|
51,655
|
307,723
|
|
| Transfers from non-operating properties |
34,291
|
142,210
|
154,732
|
304,106
|
|
| Segment assets |
3,634,194
|
3,912,092
|
3,634,194
|
3,912,092
|
$ 3,909,312
|
| Defense/Information Technology Locations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
101,819
|
98,905
|
305,146
|
292,718
|
|
| Property operating expenses |
37,673
|
34,516
|
112,182
|
108,293
|
|
| UJV NOI allocable to COPT |
1,008
|
0
|
1,008
|
0
|
|
| NOI from real estate operations |
65,154
|
64,389
|
193,972
|
184,425
|
|
| Additions to long-lived assets |
17,903
|
11,805
|
42,077
|
108,744
|
|
| Transfers from non-operating properties |
34,255
|
62,586
|
155,030
|
192,366
|
|
| Segment assets |
2,307,245
|
2,340,559
|
2,307,245
|
2,340,559
|
|
| Defense/Information Technology Locations | Fort Meade/BW Corridor |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
61,460
|
61,400
|
184,881
|
182,591
|
|
| Property operating expenses |
20,598
|
20,106
|
64,222
|
63,102
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
40,862
|
41,294
|
120,659
|
119,489
|
|
| Additions to long-lived assets |
5,901
|
7,943
|
19,516
|
16,529
|
|
| Transfers from non-operating properties |
5,331
|
25,184
|
41,850
|
44,212
|
|
| Segment assets |
1,261,337
|
1,284,712
|
1,261,337
|
1,284,712
|
|
| Defense/Information Technology Locations | Northern Virginia Defense/IT |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
12,231
|
12,875
|
36,404
|
37,383
|
|
| Property operating expenses |
4,462
|
5,150
|
13,310
|
16,120
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
7,769
|
7,725
|
23,094
|
21,263
|
|
| Additions to long-lived assets |
7,153
|
1,603
|
13,290
|
86,303
|
|
| Transfers from non-operating properties |
308
|
(91)
|
28,158
|
51,117
|
|
| Segment assets |
416,886
|
413,321
|
416,886
|
413,321
|
|
| Defense/Information Technology Locations | Lackland Air Force Base |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
12,532
|
9,018
|
34,408
|
27,426
|
|
| Property operating expenses |
7,599
|
4,553
|
19,863
|
14,665
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
4,933
|
4,465
|
14,545
|
12,761
|
|
| Additions to long-lived assets |
0
|
0
|
0
|
0
|
|
| Transfers from non-operating properties |
3
|
591
|
240
|
32,150
|
|
| Segment assets |
132,722
|
134,790
|
132,722
|
134,790
|
|
| Defense/Information Technology Locations | Navy Support Locations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
7,232
|
6,886
|
21,164
|
21,337
|
|
| Property operating expenses |
3,374
|
3,287
|
9,573
|
10,075
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
3,858
|
3,599
|
11,591
|
11,262
|
|
| Additions to long-lived assets |
2,207
|
2,084
|
5,710
|
5,446
|
|
| Transfers from non-operating properties |
0
|
1,408
|
0
|
1,408
|
|
| Segment assets |
195,244
|
196,105
|
195,244
|
196,105
|
|
| Defense/Information Technology Locations | Redstone Arsenal |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
3,189
|
3,061
|
9,496
|
8,165
|
|
| Property operating expenses |
1,112
|
888
|
3,050
|
2,605
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
2,077
|
2,173
|
6,446
|
5,560
|
|
| Additions to long-lived assets |
2,642
|
175
|
3,561
|
466
|
|
| Transfers from non-operating properties |
3,100
|
1,207
|
3,315
|
13,184
|
|
| Segment assets |
111,310
|
108,541
|
111,310
|
108,541
|
|
| Defense/Information Technology Locations | Data Center Shells |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
5,175
|
5,665
|
18,793
|
15,816
|
|
| Property operating expenses |
528
|
532
|
2,164
|
1,726
|
|
| UJV NOI allocable to COPT |
1,008
|
0
|
1,008
|
0
|
|
| NOI from real estate operations |
5,655
|
5,133
|
17,637
|
14,090
|
|
| Additions to long-lived assets |
0
|
0
|
0
|
0
|
|
| Transfers from non-operating properties |
25,513
|
34,287
|
81,467
|
50,295
|
|
| Segment assets |
189,746
|
203,090
|
189,746
|
203,090
|
|
| Regional Office |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
20,499
|
26,782
|
67,284
|
73,142
|
|
| Property operating expenses |
8,155
|
9,596
|
26,707
|
26,750
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
12,344
|
17,186
|
40,577
|
46,392
|
|
| Additions to long-lived assets |
4,168
|
129,259
|
9,107
|
198,589
|
|
| Transfers from non-operating properties |
(4)
|
5,505
|
104
|
22,230
|
|
| Segment assets |
453,766
|
695,490
|
453,766
|
695,490
|
|
| Operating wholesale data centers |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
6,809
|
6,078
|
20,106
|
12,933
|
|
| Property operating expenses |
3,317
|
4,008
|
8,629
|
8,441
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
3,492
|
2,070
|
11,477
|
4,492
|
|
| Additions to long-lived assets |
108
|
0
|
108
|
108
|
|
| Transfers from non-operating properties |
40
|
73,804
|
(391)
|
89,183
|
|
| Segment assets |
234,551
|
246,806
|
234,551
|
246,806
|
|
| Other Segments |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
1,827
|
1,921
|
5,429
|
5,798
|
|
| Property operating expenses |
807
|
777
|
2,450
|
2,506
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
1,020
|
1,144
|
2,979
|
3,292
|
|
| Additions to long-lived assets |
53
|
(27)
|
363
|
282
|
|
| Transfers from non-operating properties |
0
|
315
|
(11)
|
327
|
|
| Segment assets |
31,563
|
71,907
|
31,563
|
71,907
|
|
| Segment assets |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
$ 3,027,125
|
$ 3,354,762
|
$ 3,027,125
|
$ 3,354,762
|
|