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Concentration of Credit Risk - Schedule of Revenue by Geography (Details) - Customer Concentration Risk - Net Revenue	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%	10.00%
China
Concentration Risk [Line Items]
Concentration risk percentage	76.00%	65.00%	70.00%	68.00%
Other Asia
Concentration Risk [Line Items]
Concentration risk percentage	4.00%	13.00%	6.00%	13.00%
North America
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	18.00%	18.00%	14.00%
Europe
Concentration Risk [Line Items]
Concentration risk percentage	5.00%	4.00%	6.00%	5.00%

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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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- Definition

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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