Debt - Debt Agreements (Details) $ in Millions	1 Months Ended		120 Months Ended
	May 31, 2018 USD ($) item	Feb. 28, 2018 USD ($)	Jun. 30, 2030	Mar. 31, 2019 USD ($)	Mar. 31, 2017 USD ($)	Oct. 31, 2015 USD ($)
Debt instruments
Total Community Development District debt				$ 19.9
PPN JV Loan, due November 2025, bearing interest at 4.1%
Debt instruments
Loan amount						$ 48.2
Pier Park Outparcel Construction Loan, due March 2027, bearing interest at LIBOR plus 1.7%
Debt instruments
Loan amount					$ 1.6
Pier Park Crossings JV Loan, due June 2060, bearing interest at 4.0%
Debt instruments
Loan amount	$ 36.6
Debt instrument, period subject to interest payments only	24 months
Pier Park Crossings JV Loan, due June 2060, bearing interest at 4.0% | Minimum | Forecast
Debt instruments
Prepayment premium, as a percent of principal repaid			1.00%
Pier Park Crossings JV Loan, due June 2060, bearing interest at 4.0% | Maximum | Forecast
Debt instruments
Prepayment premium, as a percent of principal repaid			10.00%
WaterColor Crossings Construction Loan, due February 2029, bearing interest at LIBOR plus 1.7%
Debt instruments
Loan amount		$ 1.9
Debt instrument, period subject to interest payments only		12 months
Beach Homes Loan, due May 2029, bearing interest at LIBOR plus 1.7%.
Debt instruments
Loan amount	$ 1.7
Debt instrument, period subject to interest payments only	12 months
Number of homes financed | item	2