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Schedule of Accounts Receivable, Net (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Receivables [Abstract]    
Accounts Receivable, gross $ 6,925 $ 5,198
Wholesaler distribution fees and prompt pay discounts (1,767) (868)
Reserve for returns (1,645) (313)
Accounts receivable, net $ 3,513 $ 4,017