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Long-Term Debt and Credit Facilities - Debt Refinancing (Details) - USD ($)
$ in Millions
Jul. 12, 2017
Dec. 31, 2021
Dec. 31, 2020
Senior secured term loan      
Long-Term Debt and Credit Facilities.      
Original issue discount $ 7.0    
Principal percentage of each of first eight payments (as a percent) 0.60%    
Principal percentage of each payment thereafter (as a percent) 1.30%    
Senior secured term loan | LIBOR      
Long-Term Debt and Credit Facilities.      
Applicable margin rate 7.50%    
Floor interest rate 1.00%    
Senior secured term loan | Base rate      
Long-Term Debt and Credit Facilities.      
Principal percentage of each payment thereafter (as a percent) 6.50%    
Senior secured revolving facility      
Long-Term Debt and Credit Facilities.      
Maximum borrowing capacity $ 100.0    
Letters of credit outstanding   $ 0.5 $ 19.5
Credit facility drawn   $ 100.0 $ 100.0
Senior secured revolving facility | LIBOR      
Long-Term Debt and Credit Facilities.      
Principal percentage of each payment thereafter (as a percent) 7.00%    
Senior secured revolving facility | Base rate      
Long-Term Debt and Credit Facilities.      
Principal percentage of each payment thereafter (as a percent) 6.00%