Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 219,453	$ 223,217	$ 425,634	$ 433,203
Percentage of net sales		100.00%	100.00%	100.00%	100.00%
China
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 130,216	$ 139,703	$ 251,983	$ 267,160
Percentage of net sales		59.00%	63.00%	59.00%	62.00%
United States
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 21,200	$ 21,765	$ 41,626	$ 41,406
Percentage of net sales		10.00%	10.00%	10.00%	10.00%
Korea
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 17,981	$ 14,110	$ 35,247	$ 34,235
Percentage of net sales		8.00%	6.00%	8.00%	8.00%
Germany
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 16,205	$ 16,372	$ 31,536	$ 31,199
Percentage of net sales		7.00%	7.00%	7.00%	7.00%
Singapore
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 13,515	$ 12,498	$ 27,690	$ 22,116
Percentage of net sales		6.00%	6.00%	7.00%	5.00%
Taiwan
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES		$ 7,127	$ 6,698	$ 11,411	$ 13,581
Percentage of net sales		3.00%	3.00%	3.00%	3.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	[1]	$ 13,209	$ 12,071	$ 26,141	$ 23,506
Percentage of net sales	[1]	7.00%	5.00%	6.00%	5.00%

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