Stockholders' Equity (Details) - Changes in AOCI by Component (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (21,170)	[1]	$ 8,345	[2]
Change in AOCL before reclassifications to income	(21,964)	[1]	(410)	[2]
Reclassifications from AOCI to income during the period	806	[1],[3],[4]	617	[2],[3],[4]
Other comprehensive (loss) income, net of tax	(21,158)	[1]	207	[2]
Ending balance	(42,328)	[1]	8,552	[2]
Interest Rate Swaps
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(1,740)	[1]	(3,903)	[2]
Change in AOCL before reclassifications to income	(1,857)	[1]	(132)	[2]
Reclassifications from AOCI to income during the period	753	[1],[3],[4]	602	[2],[3],[4]
Other comprehensive (loss) income, net of tax	(1,104)	[1]	470	[2]
Ending balance	(2,844)	[1]	(3,433)	[2]
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(6,028)	[1]	(1,811)	[2]
Change in AOCL before reclassifications to income	0	[1]	0	[2]
Reclassifications from AOCI to income during the period	53	[1],[3],[4]	15	[2],[3],[4]
Other comprehensive (loss) income, net of tax	53	[1]	15	[2]
Ending balance	(5,975)	[1]	(1,796)	[2]
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(13,402)	[1]	14,059	[2]
Change in AOCL before reclassifications to income	(20,107)	[1]	(278)	[2]
Reclassifications from AOCI to income during the period	0	[1],[3],[4]	0	[2],[3],[4]
Other comprehensive (loss) income, net of tax	(20,107)	[1]	(278)	[2]
Ending balance	$ (33,509)	[1]	$ 13,781	[2]

[1] Amounts in parentheses represent debits (deferred losses).

[2] The average cost of the repurchased shares was $81.83 and $70.34 for the three months ended March 31, 2015 and 2014, respectively.

[3] The reclassifications related to interest rate swaps (cash flow hedges) were recorded in Interest expense, net of tax effect. See Note 9 – Derivatives and Hedging for information regarding the hedges.

[4] The reclassifications related to defined benefit pension plans were recorded in Selling, general and administrative expense, net of tax effect. See Note 11 – Employee Benefits for information regarding the Company’s defined benefit pension plans.