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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt discount.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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No definition available.

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The cash outflow for a borrowing supported by a written promise to pay an obligation.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Debt - Mortgage Loans - Schedule and Narratives (Details) - USD ($) $ in Thousands	1 Months Ended								12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Feb. 28, 2025	Dec. 31, 2024	Nov. 30, 2024	Sep. 30, 2024	Jun. 30, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt
Debt, gross									$ 2,546,589
Repayments of mortgage loans									507,873	$ 197,954	$ 281,854
Gain on extinguishment of debt									(2,402)	9,235	$ (450)
WestEnd25 \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Debt
Repayments of mortgage loans		$ 97,500							97,500
8001 Woodmont \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Debt
Repayments of mortgage loans				$ 99,700					99,700
1101 17th Street
Debt
Ownership percentage acquired	45.00%
1101 17th Street \| 1101 17th Street
Debt
Unamortized discount									$ 29,600
Mortgage loans
Debt
Variable rate									5.19%
Variable rate amount					$ 587,254				$ 600,899	587,254
Fixed rate									5.17%
Fixed rate amount					1,196,479				$ 1,020,690	1,196,479
Debt, gross					1,783,733				1,621,589	1,783,733
Unamortized deferred financing costs and premium/ discount, net					(16,560)				(42,431)	(16,560)
Long-term debt, net					1,767,173				$ 1,579,158	1,767,173
Weighted average interest rate cap strike									3.18%
SOFR at end of period									3.69%
Net carrying value of real estate collateralizing the mortgages loans					2,100,000				$ 1,700,000	2,100,000
Mortgage loans \| 1101 17th Street
Debt
Debt, gross					60,000					60,000
Mortgage loans \| 1101 17th Street \| 1101 17th Street
Debt
Debt, gross	$ 60,000
Fixed interest Rate	3.40%
Fair value of debt assumed	$ 30,400
Mortgage loans \| Interest Rate Contract
Debt
Derivative notional amount					1,400,000				$ 756,000	1,400,000
Mortgage loans \| Assets pledged as collateral \| The Grace and The Reva
Debt
Fixed rate						5.19%
Interest only payment period						5 years
Principal amount						$ 273,600
Mortgage loans \| Assets pledged as collateral \| 2101 L Street
Debt
Principal amount					120,900					$ 120,900
Repayments of mortgage loans					6,700
Gain on extinguishment of debt					$ 9,200
Mortgage loans \| Assets pledged as collateral \| 201 12th Street S., 200 12th Street S., and 251 18th Street S.
Debt
Repayments of mortgage loans							$ 83,300
Mortgage loans \| Assets pledged as collateral \| Falkland Chase-South & West and 800 North Glebe Road
Debt
Repayments of mortgage loans								$ 142,400
Mortgage loans \| Assets pledged as collateral \| Ashley, Potomac and James buildings
Debt
Fixed rate			5.03%
Interest only payment period			5 years
Principal amount			$ 258,900
Repayments of mortgage loans			$ 307,700