Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Discontinued operation, tax effect of discontinue operation	$ 600,000	$ 1,400,000	$ 1,100,000
Deferred income tax expense (benefit), discontinued operation	(300,000)	200,000	(400,000)
Net operating loss carryforwards	28,400,000
Net operating loss carryforward expiring in year two	1,600,000
Net operating loss carryforwards expiration year	2016
Deferred income taxes on undistributed earnings	0
Undistributed earnings of non-U.S. subsidiaries	334,700,000
Recognized tax benefits	5,200,000	5,100,000
Liability for interest expense and penalties accrued	800,000	500,000
Reduction to interest related to uncertain tax positions	$ 300,000