Note 11 - Stock Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Balance (in shares)	0	2,000
Stock option exercise (in shares)	0	2,000
Options exercised, exercise price (in dollars per share)		$ 4.39
Balance (in shares)	0	0

Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Number of share options (or share units) exercised during the current period.

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