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Long-Term Debt And Other Long-Term Liabilities (Long-Term Debt) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Long-term debt:    
Long-term debt $ 0 $ 19,200
Exit Credit Agreement | Long-term Debt    
Long-term debt:    
Long-term debt $ 0 0
Superior Credit Agreement | Long-term Debt    
Long-term debt:    
Long-term Line of Credit   $ 19,200