Note 11 - Information As to Employee Stock Purchase, Savings, and Similar Plans
 12 Months Ended
Mar. 31, 2018
Notes to Financial Statements  
Pension and Other Postretirement Benefits Disclosure [Text Block]

NOTE
11.
INFORMATION AS TO EMPLOYEE STOCK PURCHASE, SAVINGS, AND SIMILAR PLANS

     All of our employees are eligible to participate in our
401
(k) savings plan the
first
quarter after reaching age 
21.
Employees
may
contribute up to the Internal Revenue Code maximum. We make matching contributions of
100%
of the
first
3%
of participants’ salary deferral contributions. Our matching contributions were
$100,904
for fiscal
2018,
$104,643
for fiscal
2017,
and
$94,831
for fiscal
2016.