Subsequent Events	12 Months Ended
Mar. 31, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	18. Subsequent Events On May 24, 2013, we signed an agreement with Samsung Electronics Co., Ltd. to acquire the 4-bit and 8-bit microcontroller product lines of the System LSI Division of Samsung Electronics Co., Ltd. for a purchase price of about $50.0 million. The acquisition is expected to be consummated during the summer of calendar 2013. On May 22, 2013, we declared a quarterly cash dividend on our common stock of $0.03 per share. The quarterly dividend will be paid on June 28, 2013 to stockholders of record on June 7, 2013.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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