Business Combination (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Business Combinations [Abstract]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Description		Eris Technology Corporation (“Eris”) Prior to August 31, 2012, the Company owned less than 50% of the outstanding common stock of Eris, a publicly traded company listed on Taiwan’s GreTai Securities Market that provides design, manufacturing and after-market services for diode products. The Company elected the fair value option to account for its less than 50% ownership that otherwise would have been accounted for under the equity method of accounting. On August 31, 2012, the Company acquired approximately 51% of the outstanding common stock of Eris. The Company has accounted for the additional purchase of shares as a business combination achieved in stages (“step acquisition”) and consolidated Eris beginning September 1, 2012.
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage	51.00%	51.00%
Business Combination, Reason for Business Combination		The Company’s purpose for obtaining a controlling interest in Eris was to expand its semiconductor product offerings and to maximize its market opportunities. In addition, the Company's main interest in Eris is for its automatic manufacturing capabilities in test and assembly for various diode products. The business scope for Eris comprises Schottky Diodes, TVS Diodes, Zener Diodes, Bridge Diodes, Wafers, LEDs and the relevant devices.
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 1,000,000	$ 1,000,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	27,000,000	27,000,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	2,000,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Valuation Techniques		Fair value is the price that would be received on the sale of an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The shares of Eris common stock were valued under the fair value hierarchy as a Level 1 Input, which is the quoted price (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 1 Input fair value measurements were used to measure both the fair value of the Company’s preexisting investment and the fair value of the noncontrolling interest. The Company recorded $8 million of goodwill (which is not deductible for tax purposes) and $18 million of intangible assets associated with this acquisition. The intangible assets associated with this acquisition consist primarily of finite-lived intangibles of $15 million for developed technology and customer relationships to be amortized on a straight-line basis over a period of 12 years and 10 years, respectively. In addition, an indefinite-lived trade name in the amount of $3 million was also recorded. The fair value of the significant identified intangible assets was estimated by using the market approach, income approach and cost approach valuation methodologies. Inputs used in the methodologies primarily included projected future cash flows, discounted at a rate commensurate with the risk involved.
Goodwill, Acquired During Period		7,749,000
Acquired Finite-lived Intangible Asset, Amount	15,000,000	15,000,000
Acquired Finite-Lived Intangible Assets, Useful Life, Minimum		10
Acquired Finite-Lived Intangible Assets, Useful Life, Maximum		12
Acquired Indefinite-lived Intangible Asset, Amount	$ 3,000,000	$ 3,000,000