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Note 10 - Common Stock and Stock-based Compensation Plans - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Outstanding, Number of shares (in shares) | [1],[2] | 106,000 |  |
Outstanding, Weighted average exercise price (in dollars per share) |  | $ 20.24 |  |
Outstanding, Weighted average remaining contractual term (Year) |  | 1 year 9 months 18 days | 2 years |
Outstanding, Aggregated intrinsic value |  | $ 1,080 | $ 609 |
Outstanding, Number of shares (in shares) |  | 106,000 | 106,000 | [1],[2]
Outstanding, Weighted average exercise price (in dollars per share) |  | $ 20.24 | $ 20.24 |
Exercisable, Number of shares (in shares) | [2] | 106,000 |  |
Exercisable, Weighted average exercise price (in dollars per share) |  | $ 20.24 |  |
Exercisable, Weighted average remaining contractual term (Year) |  | 1 year 9 months 18 days |  |
Exercisable, Aggregated intrinsic value |  | $ 1,080 |  |
[1] | Represent options granted to non-employee directors of the Company only. As of December 31, 2022, there were no outstanding or exercisable SAR units left and no outstanding or exercisable options granted to employees left.
[2] | The SAR units are convertible for a maximum number of shares of the Company’s common stock equal to 75% of the SAR units subject to the grant.

X
- Definition Weighted average grant-date fair value of options and SARs exercisable. + References No definition available. + Details
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X
- Definition Number of options and stock appreciation rights outstanding. + References No definition available. + Details
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X
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