Segment Information and Enterprise-Wide Disclosure - Schedule of Revenue by Countries (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	$ 233,777		$ 224,510		$ 666,980		$ 615,853
Percentage of net sales	100.00%		100.00%		100.00%		100.00%
China
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	145,834		141,155		412,994		387,912
Percentage of net sales	62.00%		63.00%		62.00%		63.00%
United States
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	21,214		20,115		62,620		54,136
Percentage of net sales	9.00%		9.00%		9.00%		9.00%
Korea
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	16,617		19,175		50,852		50,741
Percentage of net sales	7.00%		9.00%		8.00%		8.00%
Germany
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	14,417		12,963		45,616		36,254
Percentage of net sales	6.00%		6.00%		7.00%		6.00%
Singapore
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	12,397		10,483		34,513		32,202
Percentage of net sales	5.00%		5.00%		5.00%		5.00%
Taiwan
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	8,962		9,235		22,543		21,151
Percentage of net sales	4.00%		4.00%		3.00%		3.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
NET SALES	$ 14,336	[1]	$ 11,384	[1]	$ 37,842	[1]	$ 33,457	[1]
Percentage of net sales	6.00%	[1]	5.00%	[1]	6.00%	[1]	5.00%	[1]

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