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Debt (Details)
 12 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]    
Interest Paid, Excluding Capitalized Interest, Operating Activities $ 18,600,000 $ 27,600,000
Total leverage ratio through December 31, 2019 3.25  
Total leverage ratio thereafter 3.00  
Debt service coverage ratio, actual 6.6  
Covenants minimum liquidity amount $ 25,000,000.0  
Maximum    
Debt Instrument [Line Items]    
Amended 2016 credit agreement, limit of dividends paid, distributions and redemption of capital stock $ 25,000,000  
Amended 2016 credit agreement, limit of consolidated net income (as a percent) 60.00%  
Total leverage ratio from closing date through December 31, 2018 3.50  
Minimum    
Debt Instrument [Line Items]    
Debt service coverage ratio, actual 2.00  
Term loan A-1 | London Interbank Offered Rate (LIBOR)    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.50%  
Term loan A-2 | London Interbank Offered Rate (LIBOR)    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.75%  
Revolving Credit Facility    
Debt Instrument [Line Items]    
Maximum borrowing capacity $ 75,000,000  
Term of credit facility 5 years