Stockholders' Equity (Deficit) (Details) - Changes in AOCL/I by Component - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	$ (132,400)	$ 161,171	$ 361,316
Changes during the period:
Other comprehensive (loss) income, net of tax	(5,281)	(23,232)	(29,515)
Ending Balance	60,878	(132,400)	161,171
Interest Rate Swaps
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(3,079)	(1,740)
Changes during the period:
Change in AOCL/I before reclassifications to income	(2,902)	(6,356)
Reclassifications from AOCL/I to income during the period	4,572	5,017
Other comprehensive (loss) income, net of tax	1,670	(1,339)
Ending Balance	(1,409)	(3,079)	(1,740)
Defined Benefit Pension Plans
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(4,832)	(6,028)
Changes during the period:
Change in AOCL/I before reclassifications to income	(1,113)	986
Reclassifications from AOCL/I to income during the period	148	210
Other comprehensive (loss) income, net of tax	(965)	1,196
Ending Balance	(5,797)	(4,832)	(6,028)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(36,491)	(13,402)
Changes during the period:
Change in AOCL/I before reclassifications to income	(5,986)	(23,089)
Reclassifications from AOCL/I to income during the period	0	0
Other comprehensive (loss) income, net of tax	(5,986)	(23,089)
Ending Balance	(42,477)	(36,491)	(13,402)
AOCI Attributable to Parent
Accumulated Other Comprehensive (Loss) Income, Net of Tax [Roll Forward]
Beginning Balance	(44,402)	(21,170)	8,345
Changes during the period:
Change in AOCL/I before reclassifications to income	(10,001)	(28,459)
Reclassifications from AOCL/I to income during the period	4,720	5,227
Other comprehensive (loss) income, net of tax	(5,281)	(23,232)
Ending Balance	$ (49,683)	$ (44,402)	$ (21,170)