Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) - Designated as Hedging Instrument [Member] - Forward Currency Contracts [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivatives designated as cash flow hedges:
Gain recorded in other comprehensive income (loss)	$ 450	$ 1,967	$ 441
Gain reclassified from other comprehensive income (loss) into net income	820	1,376	634
Cost of Goods Sold [Member]
Derivatives designated as cash flow hedges:
Gain reclassified from other comprehensive income (loss) into net income	695	1,259	622
Design and Development Expense [Member]
Derivatives designated as cash flow hedges:
Gain reclassified from other comprehensive income (loss) into net income	125	117	8
Selling, General and Administrative Expenses [Member]
Derivatives designated as cash flow hedges:
Gain reclassified from other comprehensive income (loss) into net income	$ 0	$ 0	$ 4