Annual report pursuant to Section 13 and 15(d)

Note 7 - Stock-based Compensation - Stock Option Activity (Details)

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Note 7 - Stock-based Compensation - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 31, 2017
Balance, options outstanding (in shares) 1,719,824 1,870,753 616,766
Balance, outstanding weighted average exercise price (in dollars per share) $ 1.55 $ 1.39 $ 1.82
Options granted (in shares) 650,000 385,929 1,468,716
Options granted (in dollars per share) $ 3.67 $ 2.16 $ 1.29
Options forfeited (in shares) (316,180) (40,722)
Options forfeited (in dollars per share) $ 1.25 $ 1.80
Options expired (in shares) (174,007)
Options expired (in dollars per share) $ 1.89
Options exercised (in shares) (25,450) (220,678)
Options exercised (in dollars per share) $ 1.80 $ 1.71
Balance, options outstanding (in shares) 2,344,374 1,719,824 1,870,753
Balance, outstanding weighted average exercise price (in dollars per share) $ 2.14 $ 1.55 $ 1.39
Balance, outstanding weighted average remaining contractual term $ 2,016    
Balance, outstanding weighted average remaining contractual term (Year) 8 years 219 days    
Balance, options exercisable (in shares) 1,088,140    
Balance, exercisable weighted average exercise price (in dollars per share) $ 1.55    
Balance, exercisable weighted average remaining contractual term $ 1,992    
Balance, exercisable weighted average remaining contractual term (Year) 7 years 73 days