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Accounts Receivable
9 Months Ended
Sep. 30, 2016
Receivables [Abstract]  
Accounts Receivable

11. Accounts Receivable

The Company performs ongoing credit evaluations of its customers and generally does not require collateral. The Company maintains reserves for estimated credit losses, and those losses have been within management’s estimates. Allowances for product returns are included in other adjustments to accounts receivable on the consolidated balance sheets. Product returns are estimated based on historical experience and management estimations.