Stockholders' Equity - Changes in AOCL/I by Component (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	$ 850,757	$ 983,465	$ 60,878
Adoption of ASU No. 2018-02		0
Other comprehensive income (loss) activity during the year:
Change in AOCI/L before reclassifications to income	(35,791)	19,619
Reclassifications from AOCI/L to income	(2,280)	(61,585)
Other comprehensive (loss) income, net of tax	(38,071)	(41,966)	51,191
Ending Balance	938,593	850,757	983,465
AOCI Attributable to Parent
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(39,867)	1,508	(49,683)
Adoption of ASU No. 2018-02		591
Other comprehensive income (loss) activity during the year:
Other comprehensive (loss) income, net of tax	(38,071)	(41,966)	51,191
Ending Balance	(77,938)	(39,867)	1,508
Interest Rate Swaps
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(7,770)	2,483
Adoption of ASU No. 2018-02		591
Other comprehensive income (loss) activity during the year:
Change in AOCI/L before reclassifications to income	(36,949)	(9,447)
Reclassifications from AOCI/L to income	(2,445)	(1,397)
Other comprehensive (loss) income, net of tax	(39,394)	(10,844)
Ending Balance	(47,164)	(7,770)	2,483
Defined Benefit Pension Plans
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(5,738)	(5,861)
Adoption of ASU No. 2018-02		0
Other comprehensive income (loss) activity during the year:
Change in AOCI/L before reclassifications to income	(3,011)	0
Reclassifications from AOCI/L to income	165	123
Other comprehensive (loss) income, net of tax	(2,846)	123
Ending Balance	(8,584)	(5,738)	(5,861)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(26,359)	4,886
Adoption of ASU No. 2018-02		0
Other comprehensive income (loss) activity during the year:
Change in AOCI/L before reclassifications to income	4,169	29,066
Reclassifications from AOCI/L to income	0	(60,311)
Other comprehensive (loss) income, net of tax	4,169	(31,245)
Ending Balance	$ (22,190)	$ (26,359)	$ 4,886

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent.

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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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