Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 264,224	$ 236,645	$ 500,527	$ 459,383
Percentage of net sales		100.00%	100.00%	100.00%	100.00%
China
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 146,696	$ 134,063	$ 276,221	$ 262,945
Percentage of net sales		56.00%	57.00%	55.00%	57.00%
United States
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 23,456	$ 21,552	$ 44,655	$ 40,658
Percentage of net sales		9.00%	9.00%	9.00%	9.00%
Korea
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 15,804	$ 13,658	$ 33,363	$ 27,459
Percentage of net sales		6.00%	6.00%	7.00%	6.00%
Germany
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 19,031	$ 18,320	$ 36,454	$ 33,226
Percentage of net sales		7.00%	8.00%	7.00%	7.00%
Singapore
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 15,097	$ 11,081	$ 26,588	$ 23,160
Percentage of net sales		6.00%	5.00%	5.00%	5.00%
Taiwan
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 18,119	$ 18,103	$ 33,618	$ 31,989
Percentage of net sales		7.00%	8.00%	7.00%	7.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales	[1]	$ 26,021	$ 19,868	$ 49,628	$ 39,946
Percentage of net sales	[1]	9.00%	7.00%	10.00%	9.00%

[1] Represents countries with less than 3% of the total net sales each.