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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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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Fair Value of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Derivative [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (191)	$ (229)
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	6,544		$ 2,367
Liabilities Fair Value	(2,952)		(1,853)
Net Fair Value	3,592		514
Foreign Currency Forward Contracts
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(245)	$ (181)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	6,519		2,345
Liabilities Fair Value	(2,697)		(1,694)
Net Fair Value	3,822		651
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	5,329		2,307
Liabilities Fair Value	(1,790)		(1,341)
Net Fair Value	3,539		966
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other Noncurrent Assets [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	1,190
Liabilities Fair Value	(907)
Net Fair Value	283
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other Noncurrent Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value			38
Liabilities Fair Value			(353)
Net Fair Value			(315)
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts
Derivative [Line Items]
Notional amount of cash flow hedges	37,819		33,867
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts \| Other Current Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	25		22
Liabilities Fair Value	(255)		(159)
Net Fair Value	$ (230)		(137)
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	$ 156,229		$ 156,818
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 2,700
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge	1 month