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Summary of Notes and Accounts Receivable (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Accounts and Other Receivables [Line Items]        
Notes receivable $ 16 $ 192    
Trade accounts receivable 61,293 31,256    
Trade Accounts And Notes Receivable Gross Current 61,309 31,448    
Allowance for doubtful accounts (775) (1,167) $ (1,275) $ (1,634)
Allowance for sales returns and discounts (1,555) (1,427) $ (1,059) $ (1,919)
Notes and accounts receivable, net $ 58,979 $ 28,854