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Information by Business Segment - Segment Financial Information for Our Reportable Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | $ 161,722 | $ 145,797 |
Property operating expenses | (56,974) | (49,999) |
UJV NOI allocable to COPT | 917 | 1,713 |
Segment assets | 4,112,948 | 4,054,457 | $ 4,077,023
Segment assets |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 3,380,802 | 3,066,945 |
Real estate operations |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 145,164 | 132,116 |
Property operating expenses | (56,974) | (49,999) |
UJV NOI allocable to COPT | 917 | 1,713 |
NOI from real estate operations | 89,107 | 83,830 |
Additions to long-lived assets | 12,230 | 16,594 |
Transfers from non-operating properties | 14,754 | 58,177 |
Real estate operations | Defense/Information Technology Locations |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 119,650 | 108,786 |
Property operating expenses | (44,490) | (38,991) |
UJV NOI allocable to COPT | 917 | 1,713 |
NOI from real estate operations | 76,077 | 71,508 |
Additions to long-lived assets | 7,976 | 12,294 |
Transfers from non-operating properties | 14,397 | 58,177 |
Real estate operations | Defense/Information Technology Locations | Fort Meade/BW Corridor |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 66,446 | 64,438 |
Property operating expenses | (24,671) | (21,222) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 41,775 | 43,216 |
Additions to long-lived assets | 6,881 | 7,675 |
Transfers from non-operating properties | 356 | 538 |
Real estate operations | Defense/Information Technology Locations | Northern Virginia Defense/IT |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 15,211 | 13,678 |
Property operating expenses | (5,876) | (5,185) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 9,335 | 8,493 |
Additions to long-lived assets | 285 | 2,691 |
Transfers from non-operating properties | 88 | 256 |
Real estate operations | Defense/Information Technology Locations | Lackland Air Force Base |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 12,555 | 12,076 |
Property operating expenses | (6,874) | (6,795) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 5,681 | 5,281 |
Additions to long-lived assets | 0 | 0 |
Transfers from non-operating properties | 51 | 15 |
Real estate operations | Defense/Information Technology Locations | Navy Support Locations |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 8,398 | 8,341 |
Property operating expenses | (3,433) | (3,285) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 4,965 | 5,056 |
Additions to long-lived assets | 552 | 1,758 |
Transfers from non-operating properties | 0 | 0 |
Real estate operations | Defense/Information Technology Locations | Redstone Arsenal |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 8,253 | 4,676 |
Property operating expenses | (2,554) | (1,847) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 5,699 | 2,829 |
Additions to long-lived assets | 258 | 170 |
Transfers from non-operating properties | 12,917 | 1,136 |
Real estate operations | Defense/Information Technology Locations | Data Center Shells |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 8,787 | 5,577 |
Property operating expenses | (1,082) | (657) |
UJV NOI allocable to COPT | 917 | 1,713 |
NOI from real estate operations | 8,622 | 6,633 |
Additions to long-lived assets | 0 | 0 |
Transfers from non-operating properties | 985 | 56,232 |
Real estate operations | Regional Office |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 16,677 | 15,460 |
Property operating expenses | (7,664) | (7,537) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 9,013 | 7,923 |
Additions to long-lived assets | 4,022 | 3,357 |
Transfers from non-operating properties | 357 | 0 |
Real estate operations | Operating wholesale data center |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 8,090 | 7,172 |
Property operating expenses | (4,421) | (3,233) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 3,669 | 3,939 |
Additions to long-lived assets | 228 | 878 |
Transfers from non-operating properties | 0 | 0 |
Real estate operations | Other |  |  |
Segment financial information for real estate operations |  |  |
Revenues from real estate operations | 747 | 698 |
Property operating expenses | (399) | (238) |
UJV NOI allocable to COPT | 0 | 0 |
NOI from real estate operations | 348 | 460 |
Additions to long-lived assets | 4 | 65 |
Transfers from non-operating properties | 0 | 0 |
Real estate operations | Segment assets |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 3,380,802 | 3,066,945 |
Real estate operations | Segment assets | Defense/Information Technology Locations |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 2,689,944 | 2,472,025 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Fort Meade/BW Corridor |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 1,270,467 | 1,275,601 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Northern Virginia Defense/IT |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 388,863 | 395,108 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Lackland Air Force Base |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 141,044 | 145,363 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Navy Support Locations |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 176,506 | 183,054 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Redstone Arsenal |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 293,107 | 138,797 |
Real estate operations | Segment assets | Defense/Information Technology Locations | Data Center Shells |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 419,957 | 334,102 |
Real estate operations | Segment assets | Regional Office |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 488,117 | 390,352 |
Real estate operations | Segment assets | Operating wholesale data center |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | 199,245 | 200,891 |
Real estate operations | Segment assets | Other |  |  |
Segment financial information for real estate operations |  |  |
Segment assets | $ 3,496 | $ 3,677 |

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