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Commitments and Contingencies - (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Jan. 31, 2019
Dec. 31, 2018
Oct. 31, 2015
Obligations        
Accrued liabilities for other litigation, claims, other disputes and governmental proceedings $ 1,200   $ 1,200  
Purchase obligations, total 33,000      
Debt, Principal 79,390   70,976  
PPN JV Loan, due November 2025, bearing interest at 4.1%        
Obligations        
Loan amount       $ 48,200
Debt, Principal 46,199   46,423  
Pier Park TPS JV Loan        
Obligations        
Guarantor liability, Scenario 1 (as a percent)   50.00%    
Guarantor liability, Scenario 2 (as a percent)   25.00%    
Pier Park TPS JV Loan | Pier Park TPS JV        
Obligations        
Loan amount   $ 14,400    
Debt, Principal 0      
Surety bonds        
Obligations        
Commitment obligations $ 9,400   $ 9,400