Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Undistributed earnings of foreign subsidiaries	$ 224,483	$ 194,148
Tax loss carryforwards	2,776	3,980
Tax credit carryforwards	2,064	915
Valuation Allowance	1,506	1,302
Unrecognized tax benefits	464	240	289	1,232
Unrecognized tax benefits that, if recognized, would impact effective tax rates	454	231	275
Recognition of interest and penalties accrued related to unrecognized tax benefits as income tax expense	6	9	444
Income tax liability for interest and penalties	38	32
Net tax benefit recognized under voluntary disclosure agreement			$ 688