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Debt:Summary Table (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Deferred financing costs $ (5,164) $ (5,372)
Long-term debt 444,836 444,628
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross 0 0
ABL Term Loan Due 2025    
Debt Instrument [Line Items]    
Long-term Debt, Gross 50,000 50,000
Long-term debt 50,000  
4.875% Senior Notes Due 2030 [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Gross $ 400,000 $ 400,000