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Business Segments, Concentration of Credit Risk and Significant Customers - Schedule of Customers Who Accounted for at Least 10% of Total Net Revenue (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Customer A
Significant Customers
Percentage of concentration risk	31.00%	37.00%	39.00%	46.00%
Customer B
Significant Customers
Percentage of concentration risk	24.00%	14.00%	12.00%	14.00%
Customer C
Significant Customers
Percentage of concentration risk	21.00%		22.00%
Customer D
Significant Customers
Percentage of concentration risk		10.00%
Customer E
Significant Customers
Percentage of concentration risk		10.00%		12.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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