Quarterly report pursuant to Section 13 or 15(d)

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

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Note 7 - Stock-based Compensation - Stock Option Activity (Details) - $ / shares
 3 Months Ended 9 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 29, 2019
Dec. 30, 2018
Outstanding, Weighted-average exercise price, beginning balance (in dollars per share)     $ 7.45 $ 7.93
Outstanding, Shares, beginning balance (in shares)     457,500 395,000
Granted, Weighted-average exercise price (in dollars per share)     $ 4.76 $ 5.90
Number of options issued (in shares)     125,000 110,000
Exercised, Weighted-average exercise price (in dollars per share)     $ 6.20
Exercised, Shares (in shares) 0 0 (10,000) 0
Forfeited, Weighted-average exercise price (in dollars per share)     $ 7.07 $ 7.83
Forfeited, Shares (in shares)     (55,000) (47,500)
Outstanding, Weighted-average exercise price, ending balance (in dollars per share) $ 6.86 $ 7.45 $ 6.86 $ 7.45
Outstanding, Shares, ending balance (in shares) 517,500 457,500 517,500 457,500
Exercisable, Weighted-average exercise price (in dollars per share) $ 7.74 $ 8.03 $ 7.74 $ 8.03
Exercisable, Shares (in shares) 347,500 292,500 347,500 292,500