Segment Reporting - Schedule of Geographical Distribution of Revenue (Details) - Revenue - Geographic Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue	100.00%	100.00%	100.00%	100.00%
Malaysia
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue	63.00%	55.00%	59.00%	62.00%
China
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue	27.00%	38.00%	25.00%	31.00%
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue	2.00%		1.00%	1.00%
Other
Revenues From External Customers And Long Lived Assets [Line Items]
Percentage of revenue	8.00%	7.00%	15.00%	6.00%