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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 01, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
AOCI Rollforward
BALANCE		$ 1,124,282	$ 930,200	$ 918,252
Other comprehensive income (loss), net of tax		(14,396)	23,718	(8,960)
Tax effects reclassified from accumulated other comprehensive income	$ 200
BALANCE		1,095,694	1,124,282	930,200
Accumulated income (loss) on foreign currency translation
AOCI Rollforward
BALANCE		(122,552)	(137,613)	(118,532)
Other comprehensive income (loss), net of tax		(24,156)	15,061	(19,081)
Tax effects reclassified from accumulated other comprehensive income		0
BALANCE		(146,708)	(122,552)	(137,613)
Accumulated income (loss) on interest rate swaps
AOCI Rollforward
BALANCE		(674)	(9,331)	(19,452)
Other comprehensive income (loss), net of tax		9,760	8,657	10,121
Tax effects reclassified from accumulated other comprehensive income		(150)
BALANCE		8,936	(674)	(9,331)
Accumulated Other Comprehensive Income (Loss)
AOCI Rollforward
BALANCE		(123,226)	(146,944)	(137,984)
Other comprehensive income (loss), net of tax		(14,396)	23,718	(8,960)
Tax effects reclassified from accumulated other comprehensive income		(150)
BALANCE		$ (137,772)	$ (123,226)	$ (146,944)

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Tax Cuts And Jobs Act, Reclassification From AOCI To Retained Earnings, Tax Effect

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- Definition

Amount after tax of other comprehensive income (loss) attributable to parent entity.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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