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Fair Value Measurement Amounts Recorded In and Reclassified From AOCI (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Derivative Instruments, Gain (Loss) [Line Items]                      
Revenues $ 252,828 $ 237,835 $ 157,785 $ 214,010 $ 264,865 $ 233,590 $ 238,263 $ 218,378 $ 862,459 $ 955,097 $ 859,634
Cost of sales                 402,159 430,382 390,524
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax                 (7,111) 3,871 10,073
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax                 (1,718) 935 2,434
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax                 (5,393) 2,936 7,639
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax                 1,378 8,607 (913)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax                 333 2,079 (221)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax                 1,045 6,528 (692)
Revenues [Member]                      
Derivative Instruments, Gain (Loss) [Line Items]                      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax                 1,997 7,969 (1,278)
Cost of Sales [Member]                      
Derivative Instruments, Gain (Loss) [Line Items]                      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax                 $ (619) $ 638 $ 365