Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	$ 206,182		$ 209,986
Percentage of net sales	100.00%		100.00%
China
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	121,767		127,458
Percentage of net sales	59.00%		61.00%
United States
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	20,427		19,641
Percentage of net sales	10.00%		9.00%
Korea
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	17,265		20,125
Percentage of net sales	8.00%		10.00%
Germany
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	15,331		14,827
Percentage of net sales	7.00%		7.00%
Singapore
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	14,176		9,618
Percentage of net sales	7.00%		5.00%
Taiwan
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	4,284		6,883
Percentage of net sales	2.00%		3.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	$ 12,932	[1]	$ 11,434	[1]
Percentage of net sales	7.00%	[1]	5.00%	[1]

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