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Note 7 Shareholders' Equity Schedule of Stock Option Activity (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 30, 2014
Dec. 31, 2013
Note 7 Shareholders Equity Schedule Of Stock Option Activity Detail    
Options outstanding 2,315,457 2,131,622
Options outstanding - weighted average exercise price $ 6.62 $ 6.99
Options outstanding - weighted average remaining contractual term (years) 4 years 226 days  
Options outstanding - aggregate intrinsic value $ 407  
Options granted 252,500  
Options granted - weighted average exercise price $ 3.94  
Options exercised (2,900)  
Options exercised - weighted average exercise price $ 3.69  
Options forfeited (18,731)  
Options forfeited - weighted average exercise price $ 3.95  
Options expired (47,034)  
Options expired - weighted average exercise price $ 10.08  
Options vested and expected to vest 2,107,093  
Options vested and expected to vest - weighted average exercise price $ 6.84  
Options vested and expected to vest - weighted average remaining contractual term (years) 4 years 128 days  
Options vested and expected to vest - aggregate intrinsic value 333  
Options Exercisable 1,183,986  
Options exercisable - weighted average exercise price $ 6.12  
Options exercisable - weighted average remaining contractual term (years) 3 years 135 days  
Options exercisable - aggregate intrinsic value $ 135