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Note 12 - Stock-based Compensation - RSU Activity (Details) - Restricted Stock Units (RSUs) [Member] - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Outstanding unvested RSUs (in shares) 1,459,280 0
Granted during the year (in shares) 3,369,167 1,640,496
Forfeited during the year (in shares) (559,809) (60,823)
Vested during the year (in shares) (494,287) (120,393)
Expired during the year (in shares)   0
Outstanding unvested RSUs (in shares) 3,774,351 1,459,280
Outstanding unvested RSUs at December 31, 2022 $ 4,416 $ 1,940