Note 5 - Equity Incentive Plan and Stock-Based Compensation (Details) - Stock Option Activities (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Mar. 30, 2014
Dec. 29, 2013
Stock Option Activities [Abstract]    
Number of Shares 5,845,146 6,542,929
Exercise Price $ 13.27 $ 13.03
Contractual Life (in Years) 4 years 47 days 4 years 153 days
Intrinsic Value $ 26,973 $ 14,061
Total vested and exercisable as of March 30, 2014 4,696,272  
Total vested and exercisable as of March 30, 2014 $ 13.87  
Total vested and exercisable as of March 30, 2014 3 years 310 days  
Total vested and exercisable as of March 30, 2014 19,482  
Cancelled/Forfeited (177,791)  
Cancelled/Forfeited $ 13.57  
Exercised (519,992)  
Exercised $ 10.28  
Exercised $ 2,894