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Note 10 - Shareholders' Equity (Details) - Summary Of Stock Options Activity By Range Of Exercise Prices (USD $)
 12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Outstanding (in Shares) 184,000 [1] 393,500
Weighted average remaining contractual life 5 years 292 days  
Weighted average exercise price, outstanding $ 8.18 [1] $ 8.49
Exercisable (in Shares) 184,000 [2]  
Weighted average exercise price, exercisable $ 8.18  
Exercise Price Range One [Member]
    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Lower exercise price $ 1.49  
Upper exercise price $ 4.00  
Outstanding (in Shares) 7,500  
Weighted average remaining contractual life 5 years 36 days  
Weighted average exercise price, outstanding $ 1.49  
Exercisable (in Shares) 7,500  
Weighted average exercise price, exercisable $ 1.49  
Exercise Price Range Two [Member]
    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Lower exercise price $ 4.01  
Upper exercise price $ 7.00  
Outstanding (in Shares) 77,500  
Weighted average remaining contractual life 5 years  
Weighted average exercise price, outstanding $ 4.31  
Exercisable (in Shares) 77,500  
Weighted average exercise price, exercisable $ 4.31  
Exercise Price Range Three [Member]
    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Lower exercise price $ 7.01  
Upper exercise price $ 12.00  
Outstanding (in Shares) 20,000  
Weighted average remaining contractual life 5 years 292 days  
Weighted average exercise price, outstanding $ 7.78  
Exercisable (in Shares) 20,000  
Weighted average exercise price, exercisable $ 7.78  
Exercise Price Range Four [Member]
    
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]    
Lower exercise price $ 12.01  
Upper exercise price $ 14.00  
Outstanding (in Shares) 79,000  
Weighted average remaining contractual life 6 years 219 days  
Weighted average exercise price, outstanding $ 12.47  
Exercisable (in Shares) 79,000  
Weighted average exercise price, exercisable $ 12.47  
[1] At December 29, 2013, the weighted-average remaining contractual life of options outstanding was 5.8 years.
[2] At December 29, 2013, the weighted-average remaining contractual life of options exercisable was 5.8 years.