Real Estate Joint Ventures - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 31, 2016	Oct. 31, 2015	Apr. 30, 2014	Dec. 31, 2013
Variable Interest Entity [Line Items]
Noncontrolling interest, capital contribution made to joint venture		$ 10,353,000	$ 0	$ 0
Income tax receivable	$ 27,057,000	27,057,000	2,275,000
Alternative minimum tax credit carryforward	13,477,000	13,477,000	0
Long-term Debt, Gross	55,653,000	55,653,000	55,194,000
Long term debt	55,040,000	55,040,000	54,474,000
Unrestricted cash and cash equivalents	241,111,000	241,111,000	212,773,000	$ 34,515,000				$ 21,894,000
Debt interest rate							4.75%
Amount of letters of credit outstanding	400,000	400,000	500,000
Assets	1,027,945,000	1,027,945,000	982,742,000
Liabilities	341,146,000	341,146,000	309,295,000
Pier Park North Joint Venture Refinanced Construction Loan | Construction loan
Variable Interest Entity [Line Items]
Long-term Debt, Gross	48,132,000	48,132,000	48,200,000
Long term debt	$ 47,519,000	$ 47,519,000	$ 47,480,000
Consolidated Variable Interest Entities | Pier Park North Joint Venture Refinanced Construction Loan
Variable Interest Entity [Line Items]
Debt interest rate	4.10%	4.10%
Consolidated Variable Interest Entities | Pier Park North Joint Venture Refinanced Construction Loan | Construction loan
Variable Interest Entity [Line Items]
Debt interest rate	4.10%	4.10%	4.10%
Pier Park North | Consolidated Variable Interest Entities | Pier Park North Joint Venture Refinanced Construction Loan
Variable Interest Entity [Line Items]
Construction loan						$ 48,200,000
Amount of letters of credit outstanding					$ 1,300,000	$ 6,600,000
Artisan Park, L.L.C | Consolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Percentage of cash contribution for joint venture by parent	74.00%	74.00%
Windmark
Variable Interest Entity [Line Items]
Capital contributions (distribution) from (to) non-controlling interest	$ 10,300,000
Variable interest entity, consideration received	20,000,000
Variable interest entity, consideration transferred	$ 9,900,000.0
Variable interest entity, ownership percentage	49.00%
Noncontrolling interest, capital contribution made to joint venture		$ 10,300,000
Noncontrolling interest, ownership percentage by noncontrolling owners	51.00%	51.00%
Variable interest entity, initial consolidation, gain (loss)	$ 0
Income tax receivable	$ 24,600,000	$ 24,600,000
Pier Park North
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage		60.00%