Information by Business Segment (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
$ 175,070
|
$ 146,743
|
$ 324,010
|
$ 302,219
|
|
| Property operating expenses |
(47,886)
|
(49,446)
|
(97,331)
|
(100,397)
|
|
| UJV NOI allocable to COPT |
1,251
|
1,202
|
2,470
|
2,401
|
|
| Segment assets |
3,803,469
|
3,612,362
|
3,803,469
|
3,612,362
|
$ 3,656,005
|
| Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
132,771
|
129,162
|
264,761
|
257,440
|
|
| Property operating expenses |
(47,886)
|
(49,446)
|
(97,331)
|
(100,397)
|
|
| UJV NOI allocable to COPT |
1,251
|
1,202
|
2,470
|
2,401
|
|
| NOI from real estate operations |
86,136
|
80,918
|
169,900
|
159,444
|
|
| Additions to long-lived assets |
15,665
|
16,768
|
30,519
|
31,063
|
|
| Transfers from non-operating properties |
101,611
|
34,224
|
141,086
|
54,318
|
|
| Defense/Information Technology Locations | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
108,452
|
105,227
|
216,975
|
209,347
|
|
| Property operating expenses |
(36,330)
|
(38,241)
|
(75,212)
|
(76,704)
|
|
| UJV NOI allocable to COPT |
1,251
|
1,202
|
2,470
|
2,401
|
|
| NOI from real estate operations |
73,373
|
68,188
|
144,233
|
135,044
|
|
| Additions to long-lived assets |
10,666
|
11,138
|
21,365
|
21,386
|
|
| Transfers from non-operating properties |
101,611
|
33,091
|
141,086
|
52,173
|
|
| Defense/Information Technology Locations | Fort Meade/BW Corridor | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
61,659
|
61,993
|
124,342
|
124,775
|
|
| Property operating expenses |
(19,344)
|
(20,099)
|
(41,679)
|
(41,703)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
42,315
|
41,894
|
82,663
|
83,072
|
|
| Additions to long-lived assets |
7,499
|
8,151
|
11,434
|
15,272
|
|
| Transfers from non-operating properties |
1,338
|
3,035
|
6,378
|
20,221
|
|
| Defense/Information Technology Locations | Northern Virginia Defense/IT | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
13,912
|
13,118
|
28,743
|
25,679
|
|
| Property operating expenses |
(4,694)
|
(4,909)
|
(9,986)
|
(9,632)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
9,218
|
8,209
|
18,757
|
16,047
|
|
| Additions to long-lived assets |
1,703
|
1,186
|
3,150
|
3,126
|
|
| Transfers from non-operating properties |
20
|
352
|
4,529
|
693
|
|
| Defense/Information Technology Locations | Lackland Air Force Base | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
12,104
|
12,382
|
23,665
|
23,825
|
|
| Property operating expenses |
(6,648)
|
(7,494)
|
(12,607)
|
(14,092)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
5,456
|
4,888
|
11,058
|
9,733
|
|
| Additions to long-lived assets |
0
|
0
|
0
|
0
|
|
| Transfers from non-operating properties |
1,833
|
0
|
8,336
|
0
|
|
| Defense/Information Technology Locations | Navy Support Locations | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
8,185
|
8,127
|
16,340
|
15,997
|
|
| Property operating expenses |
(3,286)
|
(3,431)
|
(6,690)
|
(6,735)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
4,899
|
4,696
|
9,650
|
9,262
|
|
| Additions to long-lived assets |
928
|
1,450
|
5,945
|
2,558
|
|
| Transfers from non-operating properties |
0
|
3
|
0
|
0
|
|
| Defense/Information Technology Locations | Redstone Arsenal | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
3,968
|
3,652
|
7,907
|
7,285
|
|
| Property operating expenses |
(1,599)
|
(1,509)
|
(3,138)
|
(2,949)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
2,369
|
2,143
|
4,769
|
4,336
|
|
| Additions to long-lived assets |
536
|
351
|
836
|
430
|
|
| Transfers from non-operating properties |
5,576
|
26
|
9,211
|
470
|
|
| Defense/Information Technology Locations | Data Center Shells | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
8,624
|
5,955
|
15,978
|
11,786
|
|
| Property operating expenses |
(759)
|
(799)
|
(1,112)
|
(1,593)
|
|
| UJV NOI allocable to COPT |
1,251
|
1,202
|
2,470
|
2,401
|
|
| NOI from real estate operations |
9,116
|
6,358
|
17,336
|
12,594
|
|
| Additions to long-lived assets |
0
|
0
|
0
|
0
|
|
| Transfers from non-operating properties |
92,844
|
29,675
|
112,632
|
30,789
|
|
| Regional Office | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
15,018
|
15,296
|
29,851
|
30,580
|
|
| Property operating expenses |
(7,590)
|
(7,169)
|
(15,006)
|
(15,047)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
7,428
|
8,127
|
14,845
|
15,533
|
|
| Additions to long-lived assets |
4,870
|
5,361
|
8,859
|
9,245
|
|
| Transfers from non-operating properties |
0
|
0
|
0
|
0
|
|
| Operating wholesale data center | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
8,560
|
8,105
|
16,431
|
16,182
|
|
| Property operating expenses |
(3,618)
|
(4,150)
|
(6,456)
|
(8,408)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
4,942
|
3,955
|
9,975
|
7,774
|
|
| Additions to long-lived assets |
95
|
81
|
251
|
117
|
|
| Transfers from non-operating properties |
0
|
1,133
|
0
|
2,145
|
|
| Other | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Revenues from real estate operations |
741
|
534
|
1,504
|
1,331
|
|
| Property operating expenses |
(348)
|
114
|
(657)
|
(238)
|
|
| UJV NOI allocable to COPT |
0
|
0
|
0
|
0
|
|
| NOI from real estate operations |
393
|
648
|
847
|
1,093
|
|
| Additions to long-lived assets |
34
|
188
|
44
|
315
|
|
| Transfers from non-operating properties |
0
|
0
|
0
|
0
|
|
| Segment assets |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
3,036,140
|
3,042,452
|
3,036,140
|
3,042,452
|
|
| Segment assets | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
3,036,140
|
3,042,452
|
3,036,140
|
3,042,452
|
|
| Segment assets | Defense/Information Technology Locations | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
2,429,467
|
2,420,153
|
2,429,467
|
2,420,153
|
|
| Segment assets | Defense/Information Technology Locations | Fort Meade/BW Corridor | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
1,274,336
|
1,269,525
|
1,274,336
|
1,269,525
|
|
| Segment assets | Defense/Information Technology Locations | Northern Virginia Defense/IT | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
398,586
|
396,139
|
398,586
|
396,139
|
|
| Segment assets | Defense/Information Technology Locations | Lackland Air Force Base | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
146,475
|
126,956
|
146,475
|
126,956
|
|
| Segment assets | Defense/Information Technology Locations | Navy Support Locations | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
187,172
|
190,537
|
187,172
|
190,537
|
|
| Segment assets | Defense/Information Technology Locations | Redstone Arsenal | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
115,222
|
106,374
|
115,222
|
106,374
|
|
| Segment assets | Defense/Information Technology Locations | Data Center Shells | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
307,676
|
330,622
|
307,676
|
330,622
|
|
| Segment assets | Regional Office | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
393,110
|
396,847
|
393,110
|
396,847
|
|
| Segment assets | Operating wholesale data center | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
209,787
|
221,239
|
209,787
|
221,239
|
|
| Segment assets | Other | Real estate operations |
|
|
|
|
|
| Segment financial information for real estate operations |
|
|
|
|
|
| Segment assets |
$ 3,776
|
$ 4,213
|
$ 3,776
|
$ 4,213
|
|