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Debt - Summary of Debt (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Aug. 17, 2017
Dec. 31, 2016
Debt Instrument [Line Items]      
Total $ 828,565   $ 825,090
Less current maturities of long-term debt 17,283   12,751
Principal, net of current portion 811,282   812,339
Less unamortized debt issuance costs 20,477   26,626
Long-term debt, net of current portion 790,805   785,713
Senior Notes Due 2020 [Member]      
Debt Instrument [Line Items]      
Senior debt     250,000
French Safeguard [Member]      
Debt Instrument [Line Items]      
French Safeguard Obligations 290   358
Brazilian [Member]      
Debt Instrument [Line Items]      
Line of credit 257   573
Chinese [Member]      
Debt Instrument [Line Items]      
Line of credit 2,768   2,619
Senior Secured Term Loan B [Member]      
Debt Instrument [Line Items]      
Senior debt 534,250   543,563
Incremental Term Loan [Member]      
Debt Instrument [Line Items]      
Senior debt $ 291,000    
Senior Secured Revolving Facility [Member]      
Debt Instrument [Line Items]      
Line of credit   $ 33,200 $ 27,977