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Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Sales $ 64,491 $ 60,203 $ 148,060 $ 168,415
Less: Income tax expense 589 (188) (542) (570)
Total reclassificaitons from AOCI (286) 356 156 783
Unrealized Gains (Losses) on Cash Flow Hedges [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total reclassificaitons from AOCI (286) 356 156 783
Reclassification Out Of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total reclassificaitons from AOCI (286) 356 156 783
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Cash Flow Hedges [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Sales (376) 261 206 844
Less: Income tax expense (90) (95) 50 61
Total reclassificaitons from AOCI $ (286) $ 356 $ 156 $ 783