Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components Of Income Tax Expense Benefit [Line Items]
Valuation allowance	$ 37,438,000	$ 31,772,000
Net increase in valuation allowance	5,600,000
Operating loss carry forwards, state, net of tax	14,000,000
Operating loss carry forwards, foreign, net of tax	133,700,000
Recognized tax benefit	300,000
Gross unrecognized tax benefit	15,600,000	700,000
Accrued interest and penalties related to unrecognized tax benefits	500,000	500,000
Unremitted foreign earnings	374,100,000	329,700,000
Total cash and cash equivalents	71,200,000
Cash and cash equivalents	36,815,000	28,924,000	30,767,000	32,743,000
Senior Secured Credit Agreement [Member]
Components Of Income Tax Expense Benefit [Line Items]
Restricted cash and cash equivalents	34,400,000
Non-U.S. Subsidiaries [Member]
Components Of Income Tax Expense Benefit [Line Items]
Cash and cash equivalents	36,800,000
U.S. Subsidiary [Member]
Components Of Income Tax Expense Benefit [Line Items]
Unremitted foreign earnings	$ 391,100,000