Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Line Items]
U.S. federal statutory rate	34.00%	34.00%	34.00%
Unrecognized tax benefits	$ 300,000		$ 300,000	$ 400,000
Income tax expense related to interest and penalties	0
Undistributed earnings of non-U.S. subsidiaries	12,400,000
Deferred tax valuation allowance released amount based on expected future taxable income		$ 5,100,000
U.S. NOLs
Income Taxes [Line Items]
Net operating loss carry forwards	$ 871,800,000
Net operating loss expiration period	20 years
Net operating loss carry forwards expiration year	Dec. 31, 2027
Non-U.S. NOLs
Income Taxes [Line Items]
Net operating loss carry forwards	$ 27,600,000