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Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Detail) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Total debt $ 820,750 $ 807,114
Less current maturities of long-term debt 19,537 11,714
Long-term debt, excluding current maturities of long-term debt 801,213 795,400
Senior Notes Due 2020 [Member]    
Debt Instrument [Line Items]    
Borrowings under Senior Notes 244,573 244,088
French Safeguard [Member]    
Debt Instrument [Line Items]    
French Safeguard Obligations 493 2,000
Brazilian [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit 798 826
Chinese [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit 3,576 3,696
Senior Secured Term Loan B [Member]    
Debt Instrument [Line Items]    
Borrowings under Senior Notes 551,227 552,957
Senior Secured Revolving Facility [Member]    
Debt Instrument [Line Items]    
Borrowings under line of credit $ 20,083 $ 3,547