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Debt (Additional Information) (Details)
3 Months Ended
Oct. 16, 2020
USD ($)
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]        
Borrowings under revolving credit facility   $ 4,000,000   $ 25,000,000.0
Revolving Credit Facility        
Debt Instrument [Line Items]        
Discretionary principal payments on revolving credit facility   21,000,000.0    
Borrowings under revolving credit facility   4,000,000.0    
Outstanding line of credit issuance costs   $ 2,100,000   $ 2,300,000
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement        
Debt Instrument [Line Items]        
Maximum borrowing capacity $ 450,000,000.0      
Additional borrowing capacity $ 175,000,000.0      
Variable rate lower range, basis spread 0.625%      
Variable rate higher range, basis spread 1.00%      
Leverage ratio 3.25      
One-time leverage ratio maximum option 3.50      
One-time leverage ratio maximum option, period of increased maximum leverage ratio 1 year      
ICR covenant limit 3.00      
Amount of unrestricted domestic cash and cash equivalents permitted to net against indebtedness in calculation of total net leverage ratio (up to) 50,000,000.0      
Debt instrument, leverage ratio, maximum 2.75 2.75    
Borrowings   $ 0    
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | Minimum        
Debt Instrument [Line Items]        
Unused capacity, commitment fee percentage 0.25%      
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | Maximum        
Debt Instrument [Line Items]        
Unused capacity, commitment fee percentage 0.35%      
Allowed restricted payments, including cash dividends $ 20,000,000.0      
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | Eurocurrency loans        
Debt Instrument [Line Items]        
Line of credit, LIBOR rate, minimum basis spread 1.625%      
Line of credit, LIBOR rate, maximum basis spread 2.00%      
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | Federal Funds Rate        
Debt Instrument [Line Items]        
Basis spread on variable rate 0.50%      
Revolving Credit Facility | Fourth Amended and Restated Credit Agreement | London Interbank Offered Rate (LIBOR)        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.00% 1.625%    
Revolving Credit Facility | Third Amended Credit Agreement        
Debt Instrument [Line Items]        
Borrowings     $ 150,000,000.0