v3.25.3

Joint Ventures - Unconsolidated JV - Pier Park RI JV (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) item	Sep. 30, 2025 USD ($) room	Dec. 31, 2024 USD ($)
Investments
Outstanding debt principal		$ 403,999	$ 442,716
Outstanding debt		399,006	437,754
Unconsolidated joint ventures
Investments
Outstanding debt principal		89,027	131,241
Pier Park RI JV
Investments
Outstanding debt principal		24,948	24,948
Pier Park RI JV \| Pier Park RI JV Loan
Investments
Loan amount	$ 25,000
Basis spread on variable rate (as a percent)	2.50%
Debt Instrument, Variable Interest Rate, Type	us-gaap:SecuredOvernightFinancingRateSofrMember
Number of options to extend maturity date \| item	2
Debt instrument, period by which maturity date may be extended	24 months
Outstanding debt principal		$ 24,900	$ 24,900
Pier Park RI JV \| Hotel
Investments
Number of units to be developed \| room		121
Pier Park RI JV
Investments
Ownership percentage		50.00%	50.00%

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ST JOE Co 10-Q