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Note 9 - Retirement Plans
 12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Retirement Benefits [Text Block]
9.
Retirement Plans
 
The Company has a
401
(k) Profit Sharing Plan covering substantially all eligible domestic employees. The Company made discretionary contributions of
$72,000
 and
$50,000
for the years ended
December 31, 2020
 and
2019
respectively.