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Financial Instruments and Fair Value Measurements - Liabilities Measured at FV (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Jun. 30, 2019	Jan. 31, 2019
Financial instruments and fair value measurements
Reclassification of (loss) gain out of comprehensisve (loss) income	$ (82)		$ (98)	$ 4
Pier Park TPS JV
Financial instruments and fair value measurements
Reclassification of (loss) gain out of comprehensisve (loss) income		$ 0		0
Pier Park TPS JV \| Maximum
Financial instruments and fair value measurements
Reclassification of (loss) gain out of comprehensisve (loss) income	(100)		(100)
Watercrest JV
Financial instruments and fair value measurements
Reclassification of (loss) gain out of comprehensisve (loss) income		$ 0		$ 0
Watercrest JV \| Maximum
Financial instruments and fair value measurements
Reclassification of (loss) gain out of comprehensisve (loss) income	(100)		(100)
Interest rate swap \| Watercrest JV
Financial instruments and fair value measurements
Notional amount						$ 20,000
Recurring basis
Financial instruments and fair value measurements
Liabilities	1,636		1,636		$ 1,993
Recurring basis \| Interest rate swap \| Other liabilities.
Financial instruments and fair value measurements
Derivative liabilities	1,027		1,027		1,172
Recurring basis \| Interest rate swap \| Investment in unconsolidated joint ventures
Financial instruments and fair value measurements
Derivative liabilities	609		609		821
Recurring basis \| Level 2
Financial instruments and fair value measurements
Liabilities	1,636		1,636		1,993
Recurring basis \| Level 2 \| Interest rate swap \| Pier Park TPS JV
Financial instruments and fair value measurements
Derivative liabilities	600		600		800
Recurring basis \| Level 2 \| Interest rate swap \| Other liabilities.
Financial instruments and fair value measurements
Derivative liabilities	1,027		1,027		1,172
Recurring basis \| Level 2 \| Interest rate swap \| Investment in unconsolidated joint ventures
Financial instruments and fair value measurements
Derivative liabilities	$ 609		$ 609		$ 821
Pier Park TPS JV \| Interest rate swap
Financial instruments and fair value measurements
Notional amount							$ 14,300