Debt, Net - Debt Agreements (Details) $ in Thousands	1 Months Ended									120 Months Ended
	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)	Nov. 30, 2020 USD ($)	Apr. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Oct. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	May 31, 2019 USD ($)	Jun. 30, 2030	Dec. 31, 2020 USD ($)	Aug. 31, 2019 USD ($)	May 31, 2018 USD ($) item	Feb. 28, 2018 USD ($)	Mar. 31, 2017 USD ($)	Oct. 31, 2015 USD ($)
Debt instruments
Outstanding debt	$ 185,957										$ 161,418
Total Community Development District debt	14,500										15,800
PPN JV Loan, due November 2025, bearing interest at 4.1%
Debt instruments
Loan amount																$ 48,200
Outstanding debt	44,080										44,568
PPC JV Loan, due June 2060, bearing interest at 4.0%
Debt instruments
Loan amount													$ 36,600
Outstanding debt	35,895										36,084
PPC JV Loan, due June 2060, bearing interest at 4.0% | Minimum | Forecast
Debt instruments
Prepayment premium, as a percent of principal repaid										1.00%
PPC JV Loan, due June 2060, bearing interest at 4.0% | Maximum | Forecast
Debt instruments
Prepayment premium, as a percent of principal repaid										9.00%
Watersound Origins Crossings JV Loan, due May 2024, bearing interest at 5.0%
Debt instruments
Loan amount									$ 37,900
Outstanding debt	34,596										27,179
Debt instrument, period subject to interest payments only									32 months
Watercrest JV Loan, due June 2047, bearing interest at LIBOR plus 2.2% and swapped to a fixed rate of 4.4%
Debt instruments
Loan amount								$ 22,500
Outstanding debt	19,292										18,066
Debt instrument, period subject to interest payments only								36 months
Fixed interest rate (as a percent)								4.37%
Watercrest JV Loan, due June 2047, bearing interest at LIBOR plus 2.2% and swapped to a fixed rate of 4.4% | Interest rate swap
Debt instruments
Notional amount								$ 20,000
PPC II JV Loan, due October 2024, bearing interest at LIBOR plus 2.3%
Debt instruments
Loan amount							$ 17,500
Outstanding debt	17,390										15,921
Debt instrument, period subject to interest payments only							24 months
Company's liability as guarantor, upon satisfaction of final advance conditions (as a percent)							50.00%
Company's liability as guarantor, upon reaching and maintaining a certain debt service coverage ratio (as a percent)							25.00%
Airport Hotel Loan, due March 2025, bearing interest at LIBOR plus 2.0%, with a floor rate of 3.0%
Debt instruments
Loan amount						$ 15,300
Outstanding debt	12,629										3,548
Debt instrument, period subject to interest payments only						36 months
Community Development District debt, secured by certain real estate or other collateral, due May 2023 through May 2039, bearing interest at 3.6% to 6.0%
Debt instruments
Outstanding debt	5,349										6,294
Beckrich Building III Loan, due August 2029, bearing interest at LIBOR plus 1.7%
Debt instruments
Loan amount												$ 5,500
Outstanding debt	5,305										5,421
Self-Storage Facility Loan, due November 2025, bearing interest at LIBOR plus 2.5%, with a floor rate of 3.0%
Debt instruments
Loan amount				$ 5,800
Outstanding debt	3,129
Debt instrument, period subject to interest payments only				48 months
Self-Storage Facility Loan, due November 2025, bearing interest at LIBOR plus 2.5%, with a floor rate of 3.0% | Maximum
Debt instruments
Amount of liability as guarantor				$ 2,900
Breakfast Point Hotel Loan, due November 2042, bearing interest at LIBOR plus 2.8%, with a floor rate of 3.8%
Debt instruments
Loan amount				$ 16,800
Outstanding debt	2,705
Debt instrument, period subject to interest payments only				24 months
Beach Homes Loan, due May 2029, bearing interest at LIBOR plus 1.7%.
Debt instruments
Loan amount													$ 1,700
Outstanding debt	1,518										1,545
Number of homes financed | item													2
Pier Park Outparcel Construction Loan, due March 2027, bearing interest at LIBOR plus 1.7%
Debt instruments
Loan amount															$ 1,600
Outstanding debt	1,414										1,458
WaterColor Crossings Construction Loan, due February 2029, bearing interest at LIBOR plus 1.7%
Debt instruments
Loan amount														$ 1,900
Outstanding debt	1,302										1,334
The Lodge 30A JV Loan, due January 2028, bearing interest at 3.8%
Debt instruments
Loan amount			$ 15,000
Outstanding debt	1,353
Debt instrument, period subject to interest payments only			24 months
Debt service coverage period			24 months
Company's liability as guarantor, third year (as a percent)			75.00%
Company's liability as guarantor, fourth year (as a percent)			50.00%
Company's liability as guarantor, fifth year (as a percent)			25.00%
Pier Park Resort Hotel JV Loan
Debt instruments
Loan amount					$ 52,500
Outstanding debt	0										0
Debt instrument, period subject to interest payments only					36 months
Debt service coverage period					12 months
Loan costs											$ 1,100
Pier Park Resort Hotel JV Loan | Maximum
Debt instruments
Loan amount					$ 60,000
Camp Creek Inn Loan
Debt instruments
Loan amount	28,000
Outstanding debt	$ 0
Debt instrument, period subject to interest payments only	18 months
Loan costs	$ 400
Company's liability as guarantor, upon reaching and maintaining a trailing six months operations with a certain debt service coverage ratio (as a percent)	50.00%
Trailing period one for determining Company's liability as guarantor under loan	6 months
Company's liability as guarantor, upon reaching and maintaining a trailing twelve months operations with a certain debt service coverage ratio (as a percent)	25.00%
Trailing period two for determining Company's liability as guarantor under loan	12 months
Star Avenue Apartments Loan
Debt instruments
Loan amount		$ 26,800
Outstanding debt	$ 0
Loan costs	$ 300
Loan extension period		18 months
Company's liability as guarantor, upon satisfaction of final advance conditions (as a percent)		50.00%
Company's liability as guarantor, upon reaching and maintaining a certain debt service coverage ratio (as a percent)		25.00%