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Financial Commitments (Narrative) (Details)
9 Months Ended
Aug. 18, 2020
USD ($)
Sep. 30, 2022
USD ($)
Apr. 01, 2023
Jul. 01, 2022
Dec. 31, 2021
USD ($)
Jun. 15, 2021
USD ($)
Jan. 01, 2021
Apr. 20, 2017
USD ($)
Jun. 15, 2016
BMO Harris Bank                  
Debt Instrument [Line Items]                  
Applicable margin on overdue amounts (as a percent) 2.00%                
Unsecured Debt | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Total net leverage ratio (maximum) 3.50                
Fixed charge coverage ratio (maximum) 2.00                
Convertible Notes                  
Debt Instrument [Line Items]                  
Current principal amount           $ 69,900,000      
Interest rate                 2.875%
2020 Credit Agreement | BMO Harris Bank | Federal Funds Rate                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 0.50%                
2020 Credit Agreement | BMO Harris Bank | LIBOR                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 1.00%                
2020 Credit Agreement | Line of Credit | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 425,000,000                
Periodic payment principal percentage 0.25%                
First Lien | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Net leverage ratio (maximum) 1.35                
Term Loan B | BMO Harris Bank | LIBOR | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 4.50%                
Term Loan B | BMO Harris Bank | LIBOR | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 4.75%                
Term Loan B | BMO Harris Bank | Base Rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 3.50%                
Term Loan B | BMO Harris Bank | Base Rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 3.75%                
2020 Revolver | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Net leverage ratio (maximum) 2.75     2.75     2.25    
Weighted-average annual interest rate on borrowings   7.21%              
Remaining borrowing capacity   $ 175,000,000              
2020 Revolver | BMO Harris Bank | Forecast                  
Debt Instrument [Line Items]                  
Net leverage ratio (maximum)     2.25            
2020 Revolver | BMO Harris Bank | LIBOR | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 4.25%                
2020 Revolver | BMO Harris Bank | LIBOR | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 4.75%                
2020 Revolver | BMO Harris Bank | Base Rate | Minimum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 3.25%                
2020 Revolver | BMO Harris Bank | Base Rate | Maximum                  
Debt Instrument [Line Items]                  
Basis spread on variable rate 3.75%                
2017 Senior Notes | Senior Notes                  
Debt Instrument [Line Items]                  
Current principal amount   $ 500,000,000     $ 500,000,000        
2017 Senior Notes | Senior Notes | Private Placement                  
Debt Instrument [Line Items]                  
Interest rate               6.875%  
Face amount               $ 500,000,000  
Redemption price, change of control triggering event (as a percent)   101.00%              
Revolving Credit Facility | 2020 Credit Agreement | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Increase in line of credit $ 173,500,000                
Accordion feature, percentage of LTM EBITDA 50.00%                
Revolving Credit Facility | 2020 Credit Agreement | Line of Credit | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 175,000,000                
Revolving Credit Facility | 2020 Revolver                  
Debt Instrument [Line Items]                  
Unamortized debt issuance costs   $ 1,700,000     $ 2,100,000        
Letters of Credit | 2020 Credit Agreement | Line of Credit | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity 75,000,000                
Bridge Loan | 2020 Credit Agreement | Line of Credit | BMO Harris Bank                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 10,000,000                
Secured Debt | BMO Harris Bank | Junior Lien                  
Debt Instrument [Line Items]                  
Total net leverage ratio (maximum) 3.50