Debt - Schedule of Total Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2007
Debt Instrument [Line Items]
Long term debt	$ 55,194	$ 63,804
In-substance defeased debt, interest payable at 5.62%, secured and paid by pledged cash and treasury securities, due and paid October 1, 2015
Debt Instrument [Line Items]
Long term debt			$ 29,300
Construction loan | Refinanced Loan in the Pier Park North joint venture, due November 2025, bearing interest at 4.1% at December 31, 2015
Debt Instrument [Line Items]
Long term debt	48,200	0
Construction loan | Construction loan in the Pier Park North joint venture, paid in October 2015, bearing interest at LIBOR plus 210 basis points, or 2.26% at December 31, 2014
Debt Instrument [Line Items]
Long term debt	0	31,618
Secured debt | Community Development District debt, secured by certain real estate and standby note purchase agreements, due May 2016 — May 2039, bearing interest at 2.80% to 7.0% at December 31, 2015 and 2.55% to 7.0% at December 31, 2014
Debt Instrument [Line Items]
Long term debt	6,994	6,516
In-substance defeased debt, interest payable at 5.62%, secured and paid by pledged cash and treasury securities, due and paid October 1, 2015
Debt Instrument [Line Items]
Long term debt			$ 29,300
In-substance defeased debt, interest payable at 5.62%, secured and paid by pledged cash and treasury securities, due and paid October 1, 2015 | In-substance defeased debt, interest payable at 5.62%, secured and paid by pledged cash and treasury securities, due and paid October 1, 2015
Debt Instrument [Line Items]
Long term debt	$ 0	$ 25,670