Related Parties (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Lite On Semiconductor [Member]
Sales and Purchase Retated Parties [Line Items]
Related Party ownership of common stock	18.00%		18.00%
Percentage of net sales to related party			0.00%	0.00%
Sales from product from related party			3.00%	5.00%
Net sales from related party	$ 530,000	$ 894,000	$ 851,000	$ 1,846,000
Purchased from related party	9,317,000	11,730,000	25,736,000	30,224,000
Related party receivable or payable [Abstract]
Accounts receivable	444,000		444,000		133,000
Accounts payable	7,159,000		7,159,000		5,106,000
Related Party Transaction, Description of Transaction			The Company conducts business with a related party company, Lite-On Semiconductor Corporation and its subsidiaries and affiliates (collectively, “LSC”), that owned approximately 18% of the Company’s outstanding Common Stock as of September 30, 2012.
Keylink [Member]
Sales and Purchase Retated Parties [Line Items]
Percentage of net sales to related party			3.00%	1.00%
Sales from product from related party			1.00%	1.00%
Net sales from related party	6,007,000	5,898,000	15,450,000	7,102,000
Purchased from related party	2,125,000	3,222,000	6,252,000	9,102,000
Related Party Transaction Consulting Fees From Transactions With Related Party			12,000,000	13,000,000
Related party receivable or payable [Abstract]
Accounts receivable	11,498,000		11,498,000		11,237,000
Accounts payable	5,905,000		5,905,000		6,002,000
Related Party Transaction, Description of Transaction			The Company also conducts business with one significant company, Keylink International (B.V.I.) Inc. and its subsidiaries and affiliates (collectively, “Keylink”). Keylink is the Company’s 5% joint venture partner in the Company’s Shanghai manufacturing facilities.
Eris [Member]
Sales and Purchase Retated Parties [Line Items]
Purchased from related party			$ 10,000,000
Related party receivable or payable [Abstract]
Related Party Transaction, Description of Transaction			Prior to the Company obtaining a controlling financial interest in Eris, it treated Eris as a related party. The Company subcontracted to Eris some of its wafers for assembly and test and also purchased finished goods not sourced from the Company's wafers.