Provision for Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income from continuing operations before income taxes (1):
Domestic	$ 50,984	$ 43,936	$ 48,419
Foreign	65,996	76,256	73,818
Income from continuing operations before income taxes	116,980	120,192	122,237
Current income taxes:
Federal	11,494us-gaap_CurrentFederalTaxExpenseBenefit	22,468us-gaap_CurrentFederalTaxExpenseBenefit	17,423us-gaap_CurrentFederalTaxExpenseBenefit
Foreign	17,823us-gaap_CurrentForeignTaxExpenseBenefit	20,392us-gaap_CurrentForeignTaxExpenseBenefit	19,748us-gaap_CurrentForeignTaxExpenseBenefit
State and local	1,097	781	962
Current provision for income taxes	30,414us-gaap_CurrentIncomeTaxExpenseBenefit	43,641us-gaap_CurrentIncomeTaxExpenseBenefit	38,133us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred provision (benefit) for income taxes:
Federal	2,232	(799)	3,122
Foreign	(1,232)	(7,218)	0
State and local	128	89	120
Total deferred provision (benefit) for income taxes	1,128us-gaap_DeferredIncomeTaxExpenseBenefit	(7,928)us-gaap_DeferredIncomeTaxExpenseBenefit	3,242us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for income taxes	$ 31,542us-gaap_IncomeTaxExpenseBenefit	$ 35,713us-gaap_IncomeTaxExpenseBenefit	$ 41,375us-gaap_IncomeTaxExpenseBenefit

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