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Note 16 - Subsequent Events (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Feb. 03, 2023
Dec. 31, 2022
Dec. 31, 2021
Proceeds from Issuance of Common Stock   $ 115,000 $ 557
Private Placement [Member] | Subsequent Event [Member]      
Stock Issued During Period, Shares, New Issues (in shares) 5,835,277    
Shares Issued, Price Per Share (in dollars per share) $ 5.998    
Proceeds from Issuance of Common Stock $ 35,000