Annual report pursuant to Section 13 and 15(d)

Note 22 - Subsequent Events (Details Textual)

v3.20.2
Note 22 - Subsequent Events (Details Textual) - At-the-market Offering [Member] - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Jun. 29, 2020
Mar. 31, 2020
Mar. 31, 2019
Stock Issued During Period, Shares, New Issues (in shares)   4,065,986 0
Payments of Stock Issuance Costs   $ 291  
Subsequent Event [Member]      
Stock Issued During Period, Shares, New Issues (in shares) 2,278,936    
Proceeds from Issuance of Common Stock, Net $ 1,800    
Payments of Stock Issuance Costs $ 80    
Shares Issued, Price Per Share (in dollars per share) $ 0.81