Accumulated Other Comprehensive Income (Schedule of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	$ 177,825	$ (9,233)
Other comprehensive income (loss) before reclassifications	(6,762)	3,770
Amounts reclassified from accumulated other comprehensive income	(671)	(8,161)
Balance end of period	632,795	177,825
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(46,182)	(41,791)
Balance end of period	(53,615)	(46,182)
Unrealized (Loss) Gain on Investments, Net of Tax
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	110	(157)
Other comprehensive income (loss) before reclassifications	(382)	267
Amounts reclassified from accumulated other comprehensive income	0	0
Balance end of period	(272)	110
Unrealized (Loss) Gain on Cash Flow Hedges, Net of Tax, Foreign Currency Exchange Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(736)	6,229
Other comprehensive income (loss) before reclassifications	(8,527)	1,196
Amounts reclassified from accumulated other comprehensive income	(671)	(8,161)
Balance end of period	(9,934)	(736)
Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax, Euro-Denominated Notes
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	1,396	(394)
Other comprehensive income (loss) before reclassifications	(7,378)	1,790
Amounts reclassified from accumulated other comprehensive income	0	0
Balance end of period	(5,982)	1,396
Unrealized (Loss) Gain on Net Investment Hedges, Net of Tax, Cross Currency Swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	3,467	1,360
Other comprehensive income (loss) before reclassifications	(5,626)	2,107
Amounts reclassified from accumulated other comprehensive income	0	0
Balance end of period	(2,159)	3,467
Cumulative Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance beginning of period	(50,419)	(48,829)
Other comprehensive income (loss) before reclassifications	15,151	(1,590)
Amounts reclassified from accumulated other comprehensive income	0	0
Balance end of period	$ (35,268)	$ (50,419)