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v3.25.3

Organization, Ownership, and Basis of Presentation - Additional Information (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 USD ($) a property development_site property_partnership variableInterestEntity | Dec. 31, 2024 USD ($) entity variableInterestEntity
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Lease-up properties occupancy percentage | 95.00% |
Lease-up properties, period from the date of cessation of major base building construction activities | 1 year |
Assets | $ 10,992,199 | $ 10,898,357
Liabilities | 5,306,344 | 5,289,488
Noncontrolling interests in consolidated property partnerships | $ 167,339 | $ 174,351
Entity established to facilitate potential Section 1031 Exchange | entity |  | 1
Variable Interest Entity, Primary Beneficiary |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of VIEs | variableInterestEntity | 2 | 3
Assets | $ 390,200 | $ 435,500
Liabilities | 22,100 | 18,000
Variable Interest Entity, Primary Beneficiary | Real Estate Investment |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Assets | $ 322,600 | $ 357,300
Operating Partnership |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Ownership interest (percent) | 99.00% | 99.00%
Operating Partnership | Non-Affiliated Investors and Former Executive Officer and Director |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Ownership interest (percent) | 1.00% | 1.00%
101 First LLC and 303 Second LLC | Variable Interest Entity, Primary Beneficiary |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Noncontrolling interests in consolidated property partnerships | $ 162,500 | $ 169,400
Future Development Site |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of future development sites | development_site | 8 |
Area of Land | a | 64 |
Stabilized Office Properties | Washington |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of Projects | property | 10 |
Stabilized Office Properties | Texas |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of Projects | property | 1 |
Future Development Project | Washington |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of Projects | development_site | 1 |
Future Development Project | Texas |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of Projects | development_site | 1 |
Properties And Development Projects |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Property ownership percentage | 100.00% |
Office Properties Owned By Consolidated Property Partnerships |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of Projects | property | 4 |
Consolidated Property Partnerships |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of property partnerships | property_partnership | 3 |

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