Annual report pursuant to Section 13 and 15(d)

Note 8 - Stock-based Compensation - Non-vested Stock to Directors (Details)

v3.8.0.1
Note 8 - Stock-based Compensation - Non-vested Stock to Directors (Details) - Non Employee Directors [Member]
 12 Months Ended
Apr. 01, 2018
$ / shares
shares
August 9 2017 [Member]  
Fair Value Per Share (in dollars per share) | $ / shares $ 5.50
Shares Granted (in shares) | shares 28,000
August 10, 2016 [Member]  
Fair Value Per Share (in dollars per share) | $ / shares $ 10.08
Shares Granted (in shares) | shares 28,000
August 12, 2015 [Member]  
Fair Value Per Share (in dollars per share) | $ / shares $ 8.20
Shares Granted (in shares) | shares 28,000
August 11, 2014 [Member]  
Fair Value Per Share (in dollars per share) | $ / shares $ 7.97
Shares Granted (in shares) | shares 28,000
August 14, 2013 [Member]  
Fair Value Per Share (in dollars per share) | $ / shares $ 6.67
Shares Granted (in shares) | shares 28,000