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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, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Sales $ 60,203 $ 55,686 $ 168,415 $ 154,834
Less: Income tax expense (188) (316) (570) (359)
Total reclassificaitons from AOCI     783  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total reclassificaitons from AOCI     783  
Reclassification Out Of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Total reclassificaitons from AOCI 356   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 261 $ 255 844 $ (75)
Less: Income tax expense (95)   61  
Total reclassificaitons from AOCI $ 356   $ 783