Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivative [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	$ 1,738	$ 829
Net sales	218,378	202,064
Cost of sales	96,940	92,507
Other Comprehensive Income (Loss), Tax	420	200
Other comprehensive income (loss) before reclassifications	1,318	629
Foreign Currency Transaction Gain (Loss), before Tax	(229)	(127)
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	5,733		$ 5,836
Liabilities Fair Value	(295)		(648)
Net Fair Value	5,438		5,188
Foreign Currency Forward Contracts
Derivative [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, before Tax	1,738	829
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(181)	(69)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	5,719
Liabilities Fair Value	(193)
Net Fair Value	5,526
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Prepaids and other current assets
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	5,291		5,817
Liabilities Fair Value	(65)		(431)
Net Fair Value	5,226		5,386
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other long-term assets
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	428
Liabilities Fair Value	(128)
Net Fair Value	300
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts
Derivative [Line Items]
Notional amount of cash flow hedges	42,977		39,631
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts \| Prepaids and other current assets
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	14		19
Liabilities Fair Value	(102)		(217)
Net Fair Value	(88)		(198)
Cash flow hedge \| Foreign Currency Forward Contracts
Derivative [Line Items]
Notional amount of cash flow hedges	155,730		$ 155,313
Cash flow hedges realized gains (losses)	1,598	(1,262)
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	4,000
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	1,212	(957)
Cash Flow Hedging Gain (Loss)
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	386	(305)
Revenues \| Cash flow hedge \| Foreign Currency Forward Contracts
Derivative [Line Items]
Cash flow hedges realized gains (losses)	1,497	(1,413)
Cost of Sales \| Cash flow hedge \| Foreign Currency Forward Contracts
Derivative [Line Items]
Cash flow hedges realized gains (losses)	$ 101	$ 151

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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