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 of Financial Instruments (Foreign Currency Forward Contracts) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Derivative [Line Items]
Foreign Currency Transaction Gain (Loss), before Tax	$ (441)	$ 312	$ (1,320)	$ 143
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	4,272		4,272		$ 1,548
Liabilities Fair Value	(1,616)		(1,616)		(9,511)
Net Fair Value	2,656		2,656		(7,963)
Foreign Currency Forward Contracts
Derivative [Line Items]
Gain (Loss) on Foreign Currency Derivative Instruments Not Designated as Hedging Instruments	(48)	$ (682)	(398)	$ (1,224)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	4,251		4,251		1,523
Liabilities Fair Value	(1,456)		(1,456)		(9,361)
Net Fair Value	2,795		2,795		(7,838)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Prepaid Expenses and Other Current Assets [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	3,319		3,319
Liabilities Fair Value	(1,311)		(1,311)
Net Fair Value	2,008		2,008
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other Noncurrent Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value					23
Liabilities Fair Value					(535)
Net Fair Value					(512)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other Current Liabilities [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value					1,500
Liabilities Fair Value					(8,826)
Net Fair Value					(7,326)
Derivatives designated as hedged instruments: \| Foreign Currency Forward Contracts \| Other Noncurrent Assets [Member]
Derivative Assets and Liabilities at Fair Value [Abstract]
Asset Fair Value	932		932
Liabilities Fair Value	(145)		(145)
Net Fair Value	787		$ 787
Derivatives not designated as hedging instruments: \| Foreign Currency Forward Contracts
Derivative [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge			1 month
Notional amount of cash flow hedges	37,254		$ 37,254		42,380
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	21		21		25
Liabilities Fair Value	(160)		(160)		(150)
Net Fair Value	(139)		$ (139)		(125)
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	178,908		$ 178,908		$ 154,504
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	$ 1,500		$ 1,500