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Long-Term Debt (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 29, 2022
May 31, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]          
Minimum fixed charge coverage ratio per covenant 1.10%        
Debt instrument covenant description     The springing financial covenant is triggered when the undrawn availability of the Amended Credit Agreement is less than 12.5% of the maximum loan amount for five consecutive days.    
Revolving credit facility     $ 90,000,000 $ 0  
Letters of credit outstanding     49,777,000 16,391,000  
Letter of credit remaining borrowing capacity     $ 122,320,000 245,713,000  
Debt instruments weighted average interest rate     6.71%    
Line of credit facility suppressed capacity     $ 37,903,000 37,897,000  
Debt instrument, face amount   $ 325,000,000      
Maturity date   Jun. 01, 2029      
Amortization of deferred financing fees     $ 965,000 $ 1,142,000 $ 1,382,000
2029 Notes [Member]          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 325,000,000      
Debt instrument, interest rate, stated percentage   5.25%      
Maturity date   Jun. 01, 2029      
8.000% Senior Notes Due in 2022 [Member]          
Debt Instrument [Line Items]          
Debt instrument, face amount   $ 325,000,000      
Debt instrument, interest rate, stated percentage   8.00%      
Owned Domestic Subsidiaries Percent   100.00%      
Green Loan Advance Rates [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.05%        
Minimum [Member] | Domestic Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.25%        
Minimum [Member] | Daily Simple SOFR Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.25%        
Maximum [Member] | Domestic Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.75%        
Maximum [Member] | Daily Simple SOFR Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.75%        
Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity $ 300,000,000        
Line of credit facility optional increase capacity $ 100,000,000        
Maximum covenant percentage of undrawn availability of amended credit agreement 12.50%        
Revolving Credit Facility [Member] | Domestic Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 0.50%        
Revolving Credit Facility [Member] | Daily Simple SOFR Rate [Member]          
Debt Instrument [Line Items]          
Debt instrument, basis spread on variable rate 1.00%        
Green Loan Option [Member]          
Debt Instrument [Line Items]          
Line of credit facility, maximum borrowing capacity $ 35,000,000