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Note 9 - Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2019
Outstanding, Number of shares (in shares) | [1] | 126,000 |  |  |
Outstanding, Weighted average exercise price (in dollars per share) |  | $ 20.06 |  |  |
Outstanding, Weighted average remaining contractual term (Year) |  | 2 years |  | 2 years 7 months 6 days |
Outstanding, Aggregated intrinsic value |  | $ 609 |  | $ 2,921 |
Granted, Number of shares (in shares) |  | 0 | [1] |  | 0
Exercised, Number of shares (in shares) | [1] | (19,000) |  |  |
Exercised, Weighted average exercise price (in dollars per share) |  | $ 18.79 |  |  |
Forfeited or expired, Number of shares (in shares) | [1] | (1,000) |  |  |
Outstanding, Number of shares (in shares) | [1] | 106,000 | [2] | 126,000 |
Outstanding, Weighted average exercise price (in dollars per share) |  | $ 20.24 |  | $ 20.06 |
Exercisable, Number of shares (in shares) | [1] | 106,000 |  |  |
Exercisable, Weighted average exercise price (in dollars per share) |  | $ 20.24 |  |  |
Exercisable, Weighted average remaining contractual term (Year) |  | 2 years |  |  |
Exercisable, Aggregated intrinsic value |  | $ 609 |  |  |
[1] | 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.
[2] | 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.

X
- Definition Weighted average grant-date fair value of options and SARs exercisable. + References No definition available. + Details
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X
- Definition Gross number of share options and SARs granted during the period. + References No definition available. + Details
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- Definition Number of options and stock appreciation rights outstanding. + References No definition available. + Details
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- Definition Intrinsic value of options and SARs exercisable. + References No definition available. + Details
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- Definition Intrinsic value of options and SARs outstanding. + References No definition available. + Details
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- Definition Weighted average remaining contractual terms of options and SARs exercisable. + References No definition available. + Details
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- Definition Number of share options and SARs exercisable. + References No definition available. + Details
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X
- Definition Number of share options and SARs exercised during the current period. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of options and SARs exercised during period. + References No definition available. + Details
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X
- Definition Number of share options and SARs forfeited or expired during the current period. + References No definition available. + Details
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- Definition Represents the weighted average remaining contractual term of options and SARs outstanding. + References No definition available. + Details
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