Note 5 - Equity Incentive Plan and Stock-Based Compensation (Details) - Key Executive RSUs and PSU Award Activities (USD $)
 3 Months Ended
Mar. 30, 2014
Dec. 29, 2013
Note 5 - Equity Incentive Plan and Stock-Based Compensation (Details) - Key Executive RSUs and PSU Award Activities [Line Items]    
Granted 274,000  
Key Executive Rsu [Member]
    
Note 5 - Equity Incentive Plan and Stock-Based Compensation (Details) - Key Executive RSUs and PSU Award Activities [Line Items]    
Number of Shares 297,635 974,286
Weighted Average Grant-date Fair Value $ 13.65 $ 12.40
Cancelled/Forfeited (357,870)  
Cancelled/Forfeited $ 11.03  
Vested (318,781)  
Vested $ 12.77  
Performance Stock Units [Member]
    
Note 5 - Equity Incentive Plan and Stock-Based Compensation (Details) - Key Executive RSUs and PSU Award Activities [Line Items]    
Number of Shares 618,000 362,000
Weighted Average Grant-date Fair Value $ 5.10 $ 7.38
Granted 274,000 [1]  
Granted $ 2.25  
Cancelled/Forfeited (18,000)  
Cancelled/Forfeited $ 7.40  
[1] PSU grants in fiscal 2014 are shown at a target of 274,000 shares and the maximum that can be earned on these are 411,000 shares.