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Accounts Receivable, Net - Schedule of Components of Accounts Receivable (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Receivables [Abstract]    
Accounts receivable $ 68,123 $ 52,850
Allowance for doubtful accounts (2,100) (1,425)
Allowance for product returns (1,126) (1,915)
Accounts receivable, net $ 64,897 $ 49,510