Acquisitions, Dispositions and Assets Held for Sale - Summary of the Disposition Activity (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2023	Apr. 30, 2022	Mar. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]				Gains (Losses) on Sales of Investment Real Estate	Gains (Losses) on Sales of Investment Real Estate	Gains (Losses) on Sales of Investment Real Estate
Gain on extinguishment of debt				$ 9,235	$ (450)	$ (3,073)
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on the Sale of Real Estate				(2,753)	79,335	161,894
North End Retail | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price				14,250
Cash proceeds from sale				12,410
Gain (Loss) on the Sale of Real Estate				(1,200)
Fort Totten Square | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price				86,800
Cash proceeds from sale				84,600
Gain (Loss) on the Sale of Real Estate				(5,352)
2101 L Street | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price				110,101
Cash proceeds from sale				105,014
2101 L Street | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mortgage loan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Principal amount				120,900
Repayments of Long-term Debt				6,700
Development Parcel | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					5,500	3,250
Cash proceeds from sale					4,954	3,149
Gain (Loss) on the Sale of Real Estate					(53)	(136)
4747 Bethesda Avenue | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price	$ 196,000				196,000
Gain (Loss) on the Sale of Real Estate					$ 40,053
Percentage of ownership interest in assets sold	80.00%				80.00%
Gross valuation of assets sold	$ 245,000				$ 245,000
Falkland Chase-South & West and Falkland Chase-North | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					95,000
Cash proceeds from sale					93,094
Gain (Loss) on the Sale of Real Estate					1,208
Other | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on the Sale of Real Estate				$ 3,799	669
Universal Buildings | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price						228,000
Cash proceeds from sale						194,737
Gain (Loss) on the Sale of Real Estate						41,245
Lease termination fee			$ 24,300
7200 Wisconsin Avenue, 1730 M Street, RTC-West and Courthouse Plaza 1 and 2 | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price						580,000
Cash proceeds from sale						527,694
Gain (Loss) on the Sale of Real Estate						(4,047)
Pen Place - Land Parcel | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price						198,000
Cash proceeds from sale						197,528
Gain (Loss) on the Sale of Real Estate						121,502
Land Option | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price						6,150
Cash proceeds from sale						5,800
Gain (Loss) on the Sale of Real Estate						$ 3,330
1730 M Street and RTC-West | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mortgage loan
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of Long-term Debt		$ 164,800
5 M Street Southwest | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					29,500
Cash proceeds from sale					28,585
Gain (Loss) on the Sale of Real Estate					430
Crystal City Marriott | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					80,000
Cash proceeds from sale					79,563
Gain (Loss) on the Sale of Real Estate					37,051
Capitol Point-North-75 New York Avenue | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gross sales price					11,516
Cash proceeds from sale					11,285
Gain (Loss) on the Sale of Real Estate					$ (23)