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Note 9 - Retirement Plans | 12 Months Ended
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Dec. 31, 2021
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 for both years ended December 31, 2021 and 2020.

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