Quarterly report pursuant to Section 13 or 15(d)

Revolving Line of Credit and Long-term Debt - Additional Information (Details)

v3.21.2
Revolving Line of Credit and Long-term Debt - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Nov. 23, 2018
Mar. 28, 2018
Line Of Credit Facility [Line Items]              
Debt instrument maximum borrowing capacity             $ 815,000,000
Line of credit facility excess cash payment     $ 932,000        
Line of credit facility initiation date     May 07, 2021        
Revolving Credit Facility              
Line Of Credit Facility [Line Items]              
Debt instrument maximum borrowing capacity $ 100,000,000   $ 100,000,000        
Term loan 100,000,000   100,000,000   $ 100,000,000    
Amount outstanding 0   0   0    
Available borrowings 100,000,000   $ 100,000,000   100,000,000    
Maturity date     Mar. 28, 2023        
Unused commitment fee     0.50%        
Letters of credit outstanding 0   $ 0   0    
Revolving Credit Facility | Standby Letters of Credit              
Line Of Credit Facility [Line Items]              
Line of Credit 10,000,000   10,000,000        
Revolving Credit Facility | Swing Line Sub Facility              
Line Of Credit Facility [Line Items]              
Line of Credit 10,000,000   10,000,000        
Short term borrowings outstanding 0   0   0    
First Lien              
Line Of Credit Facility [Line Items]              
Debt instrument amount $ 541,482,000   541,482,000   $ 545,693,000    
Extension of original term loan     $ 16,000,000        
Debt instrument original issue discount percentage         0.30%    
Amortization of debt discount         $ 1,000,000    
Average effective interest rate 3.14% 3.74% 3.15% 4.49%      
Maturity date     Mar. 28, 2025   Mar. 28, 2025    
First Lien | Term Loan              
Line Of Credit Facility [Line Items]              
Debt instrument amount $ 545,000,000   $ 545,000,000        
First Lien | Revolving Credit Facility              
Line Of Credit Facility [Line Items]              
Interest rate on borrowings outstanding 35.00%   35.00%        
First Lien Amendment | Term Loan              
Line Of Credit Facility [Line Items]              
Debt instrument amount           $ 16,000,000  
Second Lien              
Line Of Credit Facility [Line Items]              
Debt instrument amount $ 155,000,000   $ 155,000,000   $ 155,000,000    
Average effective interest rate 6.95% 7.54% 6.96% 8.29%      
Principal payments     $ 0        
Annual principal payment         $ 15,000,000    
Maturity date     Mar. 28, 2026        
Second Lien | Term Loan              
Line Of Credit Facility [Line Items]              
Debt instrument amount $ 155,000,000   $ 155,000,000