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Note 13 - Stock-based Compensation - Stock Option Valuation Assumptions (Details) - Share-Based Payment Arrangement, Option [Member] - The 2021 Plan [Member]
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Expected term (in years) (Year) 6 years 1 month 9 days 6 years 1 month 9 days 6 years 1 month 9 days
Expected volatility 59.19% 45.18% 43.31%
Risk-free rate 3.63% 2.16% 0.94%
Dividend yield 0.00%