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Revenue Recognition (Contract Assets and Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Revenue Recognition [Abstract]    
Contract Assets, Current Assets-Other $ 4,687 $ 13,563
Contract Liability, Accrued Liabilities 2,415 2,619
Contract Liabilities, Other Long-Term Liabilities $ 18,498 $ 19,028