Note 12 - Subsequent Events
 6 Months Ended
Sep. 30, 2020
Notes to Financial Statements  
Subsequent Events [Text Block]

NOTE
12.
SUBSEQUENT EVENTS

     On
October 
21,
2020
we announced that our Board had declared a quarterly cash dividend of
$1.00
per share of Common Stock to be paid
November 
30,
2020
to shareholders of record as of the close of business
November 
2,
2020.