Note 3. Acquisition (Details) (USD $)
7 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 5 Months Ended 12 Months Ended
Aug. 01, 2013
Dec. 29, 2013
Aug. 01, 2013
Net of Cash Acquired [Member]
Fujitsu Semiconductor Limited [Member]
Dec. 29, 2013
Fujitsu Semiconductor Limited [Member]
Developed Technology [Member]
Dec. 29, 2013
Fujitsu Semiconductor Limited [Member]
In Process Research and Development [Member]
Dec. 29, 2013
Fujitsu Semiconductor Limited [Member]
Customer Relationships [Member]
Aug. 01, 2013
Fujitsu Semiconductor Limited [Member]
Dec. 29, 2013
Fujitsu Semiconductor Limited [Member]
Dec. 29, 2013
Fujitsu Semiconductor Limited [Member]
Dec. 29, 2013
Minimum [Member]
Fujitsu Semiconductor Limited [Member]
In Process Research and Development [Member]
Dec. 29, 2013
Maximum [Member]
Fujitsu Semiconductor Limited [Member]
In Process Research and Development [Member]
Note 3. Acquisition (Details) [Line Items]                      
Business Combination, Consideration Transferred $ 158,543,000   $ 150,000,000       $ 158,500,000        
Business Combination, Acquisition Related Costs                 13,500,000    
Business Combination, Bargain Purchase, Gain Recognized, Amount 7,950,000 7,950,000             7,900,000    
Fair Value Inputs, Discount Rate       24.00% 26.00% 24.00%          
Development period                   3 months 3 years
Business Combination, Consideration Transferred, Liabilities Incurred                 8,800,000    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual               $ 222,800,000