Note 3 Business Combination (Narratives) (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013
Business Combinations [Abstract]
Business Acquisition, Name of Acquired Entity	System LSI Division of Samsung Electronics Co., Ltd.
Business Acquisition, Description of Acquired Entity	The acquired product line includes microcontrollers for various consumer, medical, automotive, telecom and power management applications.
Business Combination, Reason for Business Combination	The acquisition is intended to bolster our product portfolio and empower customers to utilize products from across our multiple product lines.
Business Acquisition, Effective Date of Acquisition	Jun. 27, 2013
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 50,000,000
Business Acquisition, Cost of Acquired Entity, Cash Paid at Closing Date	20,000,000
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Total	30,000,000
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Each Installment	15,000,000	0
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Number of Installment Payments	2
Business Acquisition, Cost of Acquired Entity, Due Date of First Installment Payment	Jun. 27, 2014
Business Acquisition, Cost of Acquired Entity, Due Date of Second Installment Payment	Dec. 31, 2014
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Description of Variable Rate Basis	six-month LIBOR
Business Acquisition, Cost of Acquired Entity, Deferred Payments, Basis Spread on Variable Rate	3.00%
Business Acquisition, Cost of Acquired Entity, Transaction Costs	$ 201,000
Discount Rate Assumed in Applying Income Approach	17.00%