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Benefit Plans - Additional Information (Details)
$ in Thousands
1 Months Ended 12 Months Ended 62 Months Ended
Nov. 30, 2007
participant
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2012
USD ($)
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Maximum contributions of annual participants compensation, percent   80.00%      
Maximum contributions of participants bonuses, percent   100.00%      
Discretionary contributions by employer   $ 4,636 $ 5,431 $ 5,345  
Deferred compensation plan liabilities, noncurrent   $ 13,425 12,744    
Executive Officers and Board of Directors          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Percentage of vested deferred compensation   100.00%      
Deferred compensation plan assets   $ 3,055 4,505    
Deferred compensation plan liabilities   6,192 6,835    
Supplemental Employment Retention Agreement | Deferred Profit Sharing | Executive Officer          
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]          
Deferred compensation plan assets   11,037 12,494    
Deferred compensation plan liabilities   14,925 14,244    
Number of participants in retention agreement | participant 1        
Funding of deferred compensations         $ 1,500
Deferred compensation plan liabilities, current   1,500      
Deferred compensation plan liabilities, noncurrent   $ 13,425 $ 12,744