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Note 9 - Retirement Plans
 12 Months Ended
Dec. 31, 2019
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 a discretionary contribution of
$50,000
for the year ended
December 31, 2019
 and did
not
make a contribution in
2018.