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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total debt $ 804,313 $ 807,114
Less current maturities of long-term debt 8,621 11,714
Long-term debt, excluding current maturities of long-term debt 795,692 795,400
Senior Notes Due 2020 [Member]    
Debt Instrument [Line Items]    
Borrowings under Senior Notes 244,822 244,088
French Safeguard [Member]    
Debt Instrument [Line Items]    
French Safeguard Obligations 496 2,000
Brazilian [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit 681 826
Chinese [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit 2,706 3,696
Senior Secured Term Loan B [Member]    
Debt Instrument [Line Items]    
Borrowings under Senior Notes 525,203 552,957
Senior Secured Revolving Facility [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit $ 30,405 $ 3,547