Mortgages Payable, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Mortgages Payable, Net
Secured debt	$ 39,090	$ 100,390
Mortgages payable, net	38,361	38,348
Secured mortgages payable related to assets held for sale (1)		61,300
Mortgage Payable
Mortgages Payable, Net
Mortgages payable, net	38,361	38,348
Collateral amount	91,100
Fixed-rate debt
Mortgages Payable, Net
Secured debt	39,090	39,090
Fixed-rate debt \| Mortgage Payable
Mortgages Payable, Net
Secured debt	39,090	39,090
Unamortized deferred financing costs	$ (729)	$ (742)

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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+ Details

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Seaport Entertainment Group Inc. 10-Q