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