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Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Forward Currency Contracts [Member]
Derivatives designated as cash flow hedges:
Gain (loss) recorded in other comprehensive income (loss)	$ (1,244)	$ 450	$ 1,967
Gain (loss) reclassified from other comprehensive income (loss) into net income	(1,499)	820	1,376
Foreign currency cash flow hedge gain (loss) to be reclassified during next 12 months	255
Losses expected to be recognized in interest expense in next year	591
Losses expected to be recognized in interest expense after next year	727
Interest Rate Swap [Member]
Derivatives designated as cash flow hedges:
Gain (loss) recorded in other comprehensive income (loss)	(1,751)
Gain (loss) reclassified from other comprehensive income (loss) into net income	(433)
Cost of Goods Sold [Member] | Forward Currency Contracts [Member]
Derivatives designated as cash flow hedges:
Gain (loss) reclassified from other comprehensive income (loss) into net income	(1,146)	695	1,259
Design and Development Expense [Member] | Forward Currency Contracts [Member]
Derivatives designated as cash flow hedges:
Gain (loss) reclassified from other comprehensive income (loss) into net income	(29)	125	117
Selling, General and Administrative Expenses [Member] | Forward Currency Contracts [Member]
Derivatives designated as cash flow hedges:
Gain (loss) reclassified from other comprehensive income (loss) into net income	$ (324)	$ 0	$ 0

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Losses expected to be recognized in interest expense in after next year

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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