Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Net sales	$ 233,590	$ 202,307	$ 690,232	$ 617,191
Cost of sales	103,479	91,680	307,492	280,736
Other Comprehensive Income (Loss), before Reclassifications, before Tax	4,887	1,710	6,751	7,202
Other Comprehensive Income (Loss), Tax	1,181	413	1,631	1,740
Other comprehensive income (loss) before reclassifications	3,706	1,297	5,120	5,462
Foreign Currency Transaction Gain (Loss), before Tax	(368)	(459)	(530)	(1,172)
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	6,286		6,286		$ 5,836
Liabilities Fair Value	(450)		(450)		(648)
Net Fair Value	5,836		5,836		5,188
Foreign Currency Forward Contracts
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	138	237	(355)	565
Derivatives designated as hedged instruments: | Foreign Currency Forward Contracts
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	6,271		6,271
Liabilities Fair Value	(326)		(326)
Net Fair Value	5,945		5,945
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	5,336		5,336		5,817
Liabilities Fair Value	(256)		(256)		(431)
Net Fair Value	5,080		5,080		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	935		935
Liabilities Fair Value	(70)		(70)
Net Fair Value	865		865
Derivatives not designated as hedging instruments: | Foreign Currency Forward Contracts
Derivative [Line Items]
Notional amount of cash flow hedges	34,457		34,457		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	15		15		19
Liabilities Fair Value	(124)		(124)		(217)
Net Fair Value	(109)		$ (109)		(198)
Cash flow hedge | Foreign Currency Forward Contracts
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge			2 years
Notional amount of cash flow hedges	155,877		$ 155,877		$ 155,313
Cash flow hedges realized gains (losses)	2,361	147	6,193	(1,498)
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	1,791	112	4,697	(1,136)
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	3,900		$ 3,900
Derivatives not designated as hedging instruments: | Foreign Currency Forward Contracts
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge			1 month
Cash Flow Hedging Gain (Loss)
Derivative [Line Items]
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax	570	35	$ 1,496	(362)
Revenues | Cash flow hedge | Foreign Currency Forward Contracts
Derivative [Line Items]
Cash flow hedges realized gains (losses)	2,241	(34)	5,834	(1,862)
Cost of Sales | Cash flow hedge | Foreign Currency Forward Contracts
Derivative [Line Items]
Cash flow hedges realized gains (losses)	$ 120	$ 181	$ 359	$ 364