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Note 7 - Stock-based Compensation - Stock Option Plan Cost (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Fair value of options vested | $ 0 | $ 0 | $ 193,000 | $ 7,000
Intrinsic value of options exercised | 243,000 | 4,000 | 614,000 | 536,000
Cash received from option exercises | 254,000 | 8,000 | 583,000 | 367,000
Tax benefit from option exercises | 2,000 | 0 | 19,000 | 69,000
Compensation cost | 96,000 | 131,000 | 163,000 | 219,000
Tax benefit associated with compensation cost | $ 5,000 | $ 13,000 | $ 9,000 | $ 20,000

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