Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

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Fair Value Measurement (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Gains (losses) on intercompany receivables	$ 646	$ (653)	$ (804)
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value	1,548	2,367
Liabilities Fair Value	(9,511)	(1,853)
Net Fair Value	(7,963)	514
Foreign Exchange Forward [Member]
Derivative [Line Items]
Forward contracts not designated as hedging instruments net realized gains (losses)	(2,269)	(573)	$ 69
Derivatives designated as hedging instruments: \| Foreign Exchange Forward [Member]
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value	1,523	2,345
Liabilities Fair Value	(9,361)	(1,694)
Net Fair Value	(7,838)	651
Derivatives designated as hedging instruments: \| Foreign Exchange Forward [Member] \| Prepaids and other current assets
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value		2,307
Liabilities Fair Value		(1,341)
Net Fair Value		966
Derivatives designated as hedging instruments: \| Foreign Exchange Forward [Member] \| Other long-term liabilities
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value	23	38
Liabilities Fair Value	(535)	(353)
Net Fair Value	(512)	(315)
Derivatives designated as hedging instruments: \| Foreign Exchange Forward [Member] \| Other current liabilities
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value	1,500
Liabilities Fair Value	(8,826)
Net Fair Value	(7,326)
Not Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member]
Derivative [Line Items]
Derivative, Notional Amount	42,380	33,867
Not Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member] \| Other current liabilities
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset Fair Value	25	22
Liabilities Fair Value	(150)	(159)
Net Fair Value	$ (125)	(137)
Not Designated as Hedging Instrument [Member] \| Foreign Exchange Forward [Member]
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge	1 month
Cash Flow Hedging [Member] \| Foreign Exchange Forward [Member]
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge	2 years
Derivative, Notional Amount	$ 154,504	$ 156,818
Unrealized gain (loss) on cash flow hedges in accumulated other comprehensive income (loss) expected to be recognized in next fiscal year	$ (5,600)