Shareholders' Equity - Accumulated Other Comprehensive Loss, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 376,772	$ 390,393	$ 456,935
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(11,010)	(33,285)	73,539
Balance at end of period	380,326	376,772	390,393
Accumulated Other Comprehensive Loss, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(66,877)	(33,595)	(107,135)
Other comprehensive income (loss) before reclassification	(12,684)	(37,213)	53,504
Amounts reclassified from accumulated other comprehensive loss, net	1,674	3,931	20,036
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(11,010)	(33,282)	73,540
Balance at end of period	(77,887)	(66,877)	(33,595)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(66,312)	(24,374)	(80,885)
Other comprehensive income (loss) before reclassification	7,627	(41,938)	56,511
Amounts reclassified from accumulated other comprehensive loss, net	(458)	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	7,169	(41,938)	56,511
Balance at end of period	(59,143)	(66,312)	(24,374)
Deferred income tax expense (benefit)	(5,474)	(5,232)	(5,339)	$ (4,113)
Deferred tax expense before reclassification	(242)	107	(1,226)
Unrealized (Losses) Gains on Interest Rate Swap and Foreign Currency Forward Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(565)	(9,221)	(26,250)
Other comprehensive income (loss) before reclassification		4,725	(3,007)
Amounts reclassified from accumulated other comprehensive loss, net		3,931	20,036
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent		8,656	17,029
Balance at end of period		(565)	(9,221)
Deferred income tax expense (benefit)	14,273	19,112	16,317	$ 9,269
Deferred tax expense before reclassification		1,525	(1,245)
Deferred tax expense, reclassification from AOCI		$ 1,270	$ 8,295
Unrealized (Losses) Gains on Interest Rate Swap and Foreign Currency Forward Contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive income (loss) before reclassification	(20,311)
Amounts reclassified from accumulated other comprehensive loss, net	2,132
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(18,179)
Balance at end of period	(18,744)
Deferred tax expense before reclassification	(5,407)
Deferred tax expense, reclassification from AOCI	$ 568