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Note 11 - Equity (Details Textual) - USD ($)
3 Months Ended
Apr. 28, 2025
Mar. 28, 2025
Mar. 10, 2025
Feb. 13, 2025
Feb. 12, 2025
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Dec. 20, 2024
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)           $ 17.6   $ 11.54  
Proceeds from Warrant Exercises           $ 8,828,000 $ 0    
Deemed Dividend Liability, Current         $ 4,410,000 4,410,000   $ 0  
Share-Based Payment Arrangement, Expense           117      
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Expense           86,000 59,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Fair Value           34,000 0    
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount           $ 225,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           2 years 6 months      
Restricted Stock Units (RSUs) [Member]                  
Share-Based Payment Arrangement, Expense           $ 1 0    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Grant Date Fair Value           $ 31 0    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           1 year 11 months 8 days      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)           10,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           $ 30,000      
Restricted Stock Units (RSUs) [Member] | Management and Directors [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     10,000            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     2 years            
Deferred Stock Units (DSUS) [Member]                  
Share-Based Payment Arrangement, Expense           $ 117,000 0    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           5 months 12 days      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)           66,668      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount           $ 92,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)           33,332      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grant Date Fair Value           $ 209,000 $ 0    
Deferred Stock Units (DSUS) [Member] | Management and Directors [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     66,668            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     6 months            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)     33,332            
The 2025 PIPE Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   547,737              
March 2025 Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)   1              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 4              
Warrants and Rights Outstanding, Term (Year)   3 years              
March 2025 Broker Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)   25,958              
Warrants and Penny Warrants [Member]                  
Stock Issued During Period, Shares, Warrant Exercises (in shares)           2,186,595      
Proceeds from Warrant Exercises           $ 8,828,000      
PIPE Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)           823,529      
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)           $ 6.83      
Proceeds from Warrant Exercises         $ 5,625,000        
Convertible Promissory Note Warrants [Member]                  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                 800,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                 $ 4
Proceeds from Warrant Exercises       $ 3,200,000          
Private Placement [Member]                  
Stock Issued During Period, Shares, New Issues (in shares)   547,737              
Equity Offering, Unit Price (in dollars per share)   $ 3              
Proceeds from Issuance or Sale of Equity   $ 1,643,000              
Equity Offering, Issuance Costs   $ 179,000              
Inducement Agreement [Member] | Subsequent Event [Member]                  
Stock Issued During Period, Shares, New Issues (in shares) 340,000                
Conversion of Promissory Note to Common Stock [Member]                  
Debt Conversion, Converted Instrument, Shares Issued (in shares)       800,000          
Debt Instrument, Convertible, Conversion Price (in dollars per share)       $ 3          
Exercise of Conversion Options, Transaction Costs, Additional Paid-in-capital       $ 39,000