ACQUISITION	3 Months Ended
Mar. 31, 2012
Business Combinations [Abstract]
ACQUISITIONS [Text Block]	ACQUISITION: On March 30, 2012, the Company through its subsidiaries entered into a definitive agreement to acquire CT-Concept Technologie AG ("Concept"), a Swiss company, by acquiring all of the outstanding shares of its Swiss parent companies, Concept Beteiligungen AG and CT-Concept Holding AG, for approximately $115.8 million, net of assumed cash. The Company closed the acquisition on May 1, 2012. Pursuant to the purchase agreement, the purchase price is subject to a net asset value adjustment which will be determined after the closing date, and is limited to a maximum of approximately $7.7 million. The net asset value adjustment will be paid within approximately six months after May 1, 2012. Concept produces highly integrated driver systems for insulated-gate bipolar transistors, or IGBT modules, replacing discrete solutions and other alternatives by offering an increased level of integration, reliability and energy efficiency. Concept products are used in power-conversion circuitry for applications ranging up to a gigawatt of output, including industrial motor drives, solar and wind power systems, electric trains and trams, electric cars, and medical equipment. The Company expects to include revenues from Concept principally in its industrial end-market category. The Company has not made all of the remaining disclosures required by ASC805-10-50-2, Business Combinations, as the acquisition has only recently closed. The Company is therefore currently in the process of completing the purchase accounting for the acquisition.

ACQUISITION

3 Months Ended

Mar. 31, 2012

ACQUISITION:

On March 30, 2012, the Company through its subsidiaries entered into a definitive agreement to acquire CT-Concept Technologie AG ("Concept"), a Swiss company, by acquiring all of the outstanding shares of its Swiss parent companies, Concept Beteiligungen AG and CT-Concept Holding AG, for approximately $115.8 million, net of assumed cash. The Company closed the acquisition on May 1, 2012. Pursuant to the purchase agreement, the purchase price is subject to a net asset value adjustment which will be determined after the closing date, and is limited to a maximum of approximately $7.7 million. The net asset value adjustment will be paid within approximately six months after May 1, 2012.

Concept produces highly integrated driver systems for insulated-gate bipolar transistors, or IGBT modules, replacing discrete solutions and other alternatives by offering an increased level of integration, reliability and energy efficiency. Concept products are used in power-conversion circuitry for applications ranging up to a gigawatt of output, including industrial motor drives, solar and wind power systems, electric trains and trams, electric cars, and medical equipment. The Company expects to include revenues from Concept principally in its industrial end-market category.

The Company has not made all of the remaining disclosures required by ASC805-10-50-2, Business Combinations, as the acquisition has only recently closed. The Company is therefore currently in the process of completing the purchase accounting for the acquisition.