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Note 16 - Subsequent Events (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Oct. 01, 2024
Sep. 30, 2024
Dec. 31, 2023
Sep. 30, 2023
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   5,271,604 5,271,604  
Cash   $ 14,645   $ 42,113
Share Subscription Payable [Member]        
Cash   3,800    
Subsequent Event [Member] | Registered Direct Offering [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 17,626      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 0.001      
Subsequent Event [Member] | Prefunded Warrants [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 424,358      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 0.001      
Subsequent Event [Member] | Warrants for Common Stock [Member]        
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) 1,546,914      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 4.82      
Registered Direct Offering [Member] | Subsequent Event [Member]        
Stock Issued During Period, Shares, New Issues (in shares) 725,000      
Proceeds from Issuance or Sale of Equity $ 3,500      
Placement Agent Fee, Percentage of Gross Proceeds 6.00%      
Private Placement [Member]        
Proceeds from Issuance or Sale of Equity   $ 3,800    
Private Placement [Member] | Subsequent Event [Member]        
Stock Issued During Period, Shares, New Issues (in shares) 379,930      
Proceeds from Issuance or Sale of Equity $ 3,800      
Private Placement [Member] | Subsequent Event [Member] | Certain Directors, Executive Officers, and Affiliated Entities [Member]        
Proceeds from Issuance or Sale of Equity $ 1,300