Note 12 - Stock Compensation - Stock Option Activity (Details) - $ / shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Balance (in shares)	2,000	3,000
Stock option exercise (in shares)	2,000	1,000
Options exercised, exercise price (in dollars per share)	$ 4.39	$ 0.00
Balance (in shares)	0	2,000

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

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