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Financial Commitments (Narrative) (Details)
1 Months Ended 9 Months Ended
May 02, 2023
Aug. 18, 2020
USD ($)
Oct. 31, 2022
Sep. 30, 2023
USD ($)
Apr. 01, 2023
Dec. 31, 2022
USD ($)
Jan. 01, 2022
Apr. 20, 2017
USD ($)
Debt Instrument [Line Items]                
Current maturities of long-term debt       $ 28,040,000   $ 70,285,000    
Term Loan B                
Debt Instrument [Line Items]                
Current maturities of long-term debt           $ 44,000,000    
BMO Harris Bank                
Debt Instrument [Line Items]                
Applicable margin on overdue amounts (as a percent)   2.00%            
BMO Harris Bank | Unsecured Debt                
Debt Instrument [Line Items]                
Fixed charge coverage ratio (maximum)   2.00            
2020 Credit Agreement | BMO Harris Bank | Federal Funds Rate                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.50% 0.50%          
2020 Credit Agreement | BMO Harris Bank | Secured Overnight Financing Rate (SOFR)                
Debt Instrument [Line Items]                
Basis point spread, 1 month interest period 0.11448%              
Basis point spread, 3 month interest period 0.26161%              
Basis point spread, 6 month interest period 0.42826%              
Basis spread on variable rate   1.00% 1.00%          
Debt instrument, basis spread on variable rate adjustment     0.10%          
2020 Credit Agreement | BMO Harris Bank | Line of Credit                
Debt Instrument [Line Items]                
Maximum borrowing capacity   $ 425,000,000            
Remaining maturity   91 days            
Periodic payment principal percentage   0.25%            
Term Loan B | BMO Harris Bank | Secured Overnight Financing Rate (SOFR) | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate   4.50%            
Term Loan B | BMO Harris Bank | Secured Overnight Financing Rate (SOFR) | 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%            
First Lien | BMO Harris Bank                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)   1.35            
2017 Senior Notes | Senior Notes | Private Placement                
Debt Instrument [Line Items]                
Face amount               $ 500,000,000
Interest rate               6.875%
Redemption price, change of control triggering event (as a percent)       101.00%        
Revolving Credit Facility                
Debt Instrument [Line Items]                
Unamortized debt issuance costs       $ 1,600,000        
Revolving Credit Facility | BMO Harris Bank                
Debt Instrument [Line Items]                
Weighted-average annual interest rate on borrowings       11.77%        
Remaining borrowing capacity       $ 175,000,000        
Revolving Credit Facility | BMO Harris Bank | Secured Overnight Financing Rate (SOFR) | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate   4.25%            
Revolving Credit Facility | BMO Harris Bank | Secured Overnight Financing Rate (SOFR) | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate   4.75%            
Revolving Credit Facility | BMO Harris Bank | Base Rate | Minimum                
Debt Instrument [Line Items]                
Basis spread on variable rate   3.25%            
Revolving Credit Facility | BMO Harris Bank | Base Rate | Maximum                
Debt Instrument [Line Items]                
Basis spread on variable rate   3.75%            
Revolving Credit Facility | BMO Harris Bank | Net Leverage Ratio                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)   2.75 2.75   2.25 3.50 2.25  
Revolving Credit Facility | BMO Harris Bank | Net Leverage Ratio | Fiscal Quarter March 31, 2023                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)       3.75        
Revolving Credit Facility | BMO Harris Bank | Net Leverage Ratio | Fiscal Quarter June 30, 2023                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)       3.00        
Revolving Credit Facility | BMO Harris Bank | Net Leverage Ratio | Fiscal Quarter September 30, 2023                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)       2.50        
Revolving Credit Facility | BMO Harris Bank | Net Leverage Ratio | Fiscal Quarter December 31, 2023                
Debt Instrument [Line Items]                
Net leverage ratio (maximum)       2.25        
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 | BMO Harris Bank | Line of Credit                
Debt Instrument [Line Items]                
Maximum borrowing capacity   $ 175,000,000            
Letters of Credit | 2020 Credit Agreement | BMO Harris Bank | Line of Credit                
Debt Instrument [Line Items]                
Maximum borrowing capacity   75,000,000            
Bridge Loan | 2020 Credit Agreement | BMO Harris Bank | Line of Credit                
Debt Instrument [Line Items]                
Maximum borrowing capacity   $ 10,000,000            
Secured Debt | BMO Harris Bank | Unsecured Debt | Junior Lien                
Debt Instrument [Line Items]                
Total net leverage ratio (maximum)   3.50