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Note 16 - Stock-Based Compensation - Stock Option Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] - The 2021 Plan [Member]
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Expected term (in years) (Year) 6 years 1 month 6 days 6 years 1 month 6 days 6 years 1 month 6 days
Expected volatility 55.60% 55.90% 59.20%
Risk-free rate 4.10% 4.10% 3.60%
Dividend yield 0.00% 0.00% 0.00%