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Accounts Receivable, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Receivables [Abstract]    
Customer receivables $ 408,551 $ 418,016
Other current receivables 9,310 7,062
Accounts Receivable, gross 417,861 425,078
Less allowances (6,940) (4,077)
Total $ 410,921 $ 421,001