Note 7. Equity Incentive Plan and Stock-based Compensation (Details) (USD $)
12 Months Ended 3 Months Ended 0 Months Ended
Dec. 28, 2014
Dec. 29, 2013
Dec. 30, 2012
Mar. 30, 2014
Dec. 28, 2014
May 16, 2014
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Share-based Compensation Minimum Percentage of Key Executive Restricted Stock or Rsu Awards Vested 50.00%          
Share-based Compensation Maximum Percentage of Key Executive Restricted Stock or RSU Awards Vested 150.00%          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares) 0 644,000 2,747,400      
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense (in Dollars) $ 0 $ 0 $ 0      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value (in Dollars) $ 8,300,000 $ 14,300,000 $ 13,500,000      
Two Thousand Ten Plan [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Maximum Term of Options 7 years          
Restricted Stock Units (RSUs) [Member] | Minimum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Share Based Payment Award Vesting Period 2 years          
Restricted Stock Units (RSUs) [Member] | Maximum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Share Based Payment Award Vesting Period 4 years          
Key Executive Rsu [Member] | Shares Granted In Fiscal 2012 [Member] | Minimum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Performance Period For Key Executive Restricted Stock Or RSU Awards 2 years          
Key Executive Rsu [Member] | Shares Granted In Fiscal 2012 [Member] | Maximum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Performance Period For Key Executive Restricted Stock Or RSU Awards 3 years          
Performance Stock Units [Member] | Net of Forfeitures and Cancellations [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Additional Awards That Could Be Earned Under the 2014 PSUs (in Shares) 137,000          
Performance Stock Units [Member] | Minimum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Minimum Performance Based Shares For 2014 Grants That Can Vest       0.00%    
Performance Stock Units [Member] | Maximum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Maximum Performance Based Shares For 2014 Grants That Can Vest       150.00%    
Performance Stock Units [Member] | Senior Executives [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Minimum Performance Based Shares For 2014 Grants That Can Vest   0.00%        
Maximum Performance Based Shares For 2014 Grants That Can Vest   100.00%        
Performance Stock Units [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Minimum Performance Based Shares For 2014 Grants That Can Vest       100.00%    
Share-based Compensation Arrangement for Performance Awards Vesting Period       3 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period         3 years  
Shares Granted In Fiscal 2012 [Member] | Minimum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Performance Period For Key Executive Restricted Stock Or RSU Awards 2 years          
Share-based Compensation Minimum Percentage of Key Executive Restricted Stock or Rsu Awards Vested 0.00%          
Shares Granted In Fiscal 2012 [Member] | Maximum [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Performance Period For Key Executive Restricted Stock Or RSU Awards 3 years          
Share-based Compensation Maximum Percentage of Key Executive Restricted Stock or RSU Awards Vested 100.00%          
Shares Granted in Fiscal 2013 [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Performance Period for Performance Stock Units   18 months        
The 2014 Employee Stock Purchase Plan [Member]            
Note 7. Equity Incentive Plan and Stock-based Compensation (Details) [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Employee Stock Purchase Plan,Maximum Annual Contributions Per Employee, Percent           10.00%
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date           85.00%
Maximum Shares Issuable Under the Employee Stock Purchase Plan (in Shares)           2,000,000