Summary of Significant Accounting Policies - Schedule of Revenue and Accounts Receivable for Each Significant Customer (Details)	12 Months Ended
	Dec. 31, 2016 USD ($) segment	Dec. 31, 2015 USD ($)	Dec. 31, 2014
Segments
Number of operating segments | segment	1
Allowance for Trade Receivables
Accounts Receivable
Accounts receivable allowance	$ 0	$ 0
Allowance for Product Returns
Accounts Receivable
Accounts receivable allowance	$ 188,000	$ 344,000
Revenue | Customer Concentration Risk | Customer A
Concentration risk
Concentration risk percentage	22.00%	26.00%	26.00%
Revenue | Customer Concentration Risk | Customer B
Concentration risk
Concentration risk percentage		13.00%	13.00%
Revenue | Customer Concentration Risk | Customer B | Maximum
Concentration risk
Concentration risk percentage	10.00%
Revenue | Customer Concentration Risk | Customer C
Concentration risk
Concentration risk percentage			15.00%
Revenue | Customer Concentration Risk | Customer C | Maximum
Concentration risk
Concentration risk percentage	10.00%	10.00%
Revenue | Customer Concentration Risk | Customer D | Maximum
Concentration risk
Concentration risk percentage	10.00%	10.00%	10.00%
Revenue | Customer Concentration Risk | Customer E
Concentration risk
Concentration risk percentage	12.00%
Revenue | Customer Concentration Risk | Customer E | Maximum
Concentration risk
Concentration risk percentage		10.00%	10.00%
Accounts Receivable, net | Customer Concentration Risk | Customer A
Concentration risk
Concentration risk percentage	12.00%	28.00%
Accounts Receivable, net | Customer Concentration Risk | Customer B
Concentration risk
Concentration risk percentage	13.00%	23.00%
Accounts Receivable, net | Customer Concentration Risk | Customer C | Maximum
Concentration risk
Concentration risk percentage	10.00%	10.00%
Accounts Receivable, net | Customer Concentration Risk | Customer D
Concentration risk
Concentration risk percentage	10.00%
Accounts Receivable, net | Customer Concentration Risk | Customer D | Maximum
Concentration risk
Concentration risk percentage		10.00%
Accounts Receivable, net | Customer Concentration Risk | Customer E
Concentration risk
Concentration risk percentage	18.00%
Accounts Receivable, net | Customer Concentration Risk | Customer E | Maximum
Concentration risk
Concentration risk percentage		10.00%