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Lease Obligations (Summary of Maturity of Lease Obligations for Operating Leases) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Commitments and Contingencies [Abstract]      
One year or less $ 3,123 $ 3,296  
Over one year through three years 4,322 4,455  
Over three years through five years 2,986 3,012  
Over five years 2,749 3,062  
Gross Operating Lease Liabilities 13,180 13,825  
Imputed interest (1,000) (1,073) $ (1,073)
Total Operating Lease Liabilities $ 12,180 $ 12,752