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Note 5 - Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
Risk-free interest rates |  |  | 4.27% |  |  | — |  |  |  | 4.94% |
Expected life (in years) |  |  | 1 |  |  | — |  |  |  | 3 |
Dividend yield |  |  | 0.73% |
Expected volatility (weighted average) |  |  | 28.0% |  |  | — |  |  |  | 34.0% |
Risk-free interest rates |  | 3.86% | — | 4.68%
Expected life (in years) |  | 2 | — | 5.75
Dividend yield |  | 0.59%
Expected volatility (weighted average) |  | 36% | — | 42.20%

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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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