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Acquisitions, Dispositions and Assets Held for Sale - Summary of Disposition Activity (Details) - USD ($) $ in Thousands	1 Months Ended					12 Months Ended
	Feb. 17, 2026	Jun. 30, 2025	May 31, 2025	Feb. 28, 2025	Mar. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of mortgage loans						$ 507,873	$ 197,954	$ 281,854
Gain (loss) on the extinguishment of debt, net						(2,402)	9,235	(450)
West Half \| Consolidated Real Estate Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of ownership interest in assets sold			40.00%
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						$ 46,633	$ (2,753)	$ 79,335
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
8001 Woodmont \| 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						$ 194,000
Cash proceeds from sale						188,779
Gain (Loss) on the Sale of Real Estate						(840)
Repayments of mortgage loans				$ 99,700		99,700
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						11,000		$ 5,500
Cash proceeds from sale						10,355		4,954
Gain (Loss) on the Sale of Real Estate						(539)		(53)
Development Parcel \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Subsequent Event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Asset sold	$ 50,700
WestEnd25 \| 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						186,000
Cash proceeds from sale						181,098
Gain (Loss) on the Sale of Real Estate						42,304
Repayments of mortgage loans		$ 97,500				97,500
Gain (loss) on termination of interest rate swap						2,200
The Batley \| 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						155,000
Cash proceeds from sale						150,053
Gain (Loss) on the Sale of Real Estate						(37)
Development Parcel disposed on December 9, 2025 \| 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						8,000
Cash proceeds from sale						7,545
Gain (Loss) on the Sale of Real Estate						(393)
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
Gain (loss) on the extinguishment of debt, net							9,200
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
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
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)
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						6,138	$ 3,799	$ 669
Other \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| National Landing
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on the Sale of Real Estate						4,700
Other \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Prior year property dispositions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on the Sale of Real Estate						$ 1,400