Financial Instruments and Fair Value Measurements - Liabilities Measured at FV (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Jan. 31, 2019
Recurring basis
Financial instruments and fair value measurements
Liabilities	$ 1,993	$ 336
Recurring basis | Interest rate swap | Other liabilities.
Financial instruments and fair value measurements
Derivative liabilities	1,172	336
Recurring basis | Interest rate swap | Investment in unconsolidated joint ventures
Financial instruments and fair value measurements
Derivative liabilities	821
Recurring basis | Level 2
Financial instruments and fair value measurements
Liabilities	1,993	336
Recurring basis | Level 2 | Interest rate swap | Other liabilities.
Financial instruments and fair value measurements
Derivative liabilities	1,172	$ 336
Recurring basis | Level 2 | Interest rate swap | Investment in unconsolidated joint ventures
Financial instruments and fair value measurements
Derivative liabilities	821
Pier Park TPS JV | Interest rate swap
Financial instruments and fair value measurements
Notional amount				$ 14,400
Pier Park TPS JV | Recurring basis | Level 2 | Interest rate swap
Financial instruments and fair value measurements
Derivative liabilities	$ 800
Latitude Margaritaville Watersound JV | Interest rate swap | Watercrest JV
Financial instruments and fair value measurements
Notional amount			$ 20,000