XML 96 R48.htm IDEA: XBRL DOCUMENT v3.25.1
Note 7 - Stockholders' Equity (Deficit) (Details Textual)
 6 Months Ended 12 Months Ended
Jun. 10, 2024
USD ($)
$ / shares
shares
Jul. 24, 2023
USD ($)
$ / shares
shares
May 09, 2023
USD ($)
$ / shares
shares
Jan. 19, 2023
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
shares
Jul. 26, 2023
$ / shares
Jun. 08, 2023
USD ($)
Class of Stock [Line Items]                    
Common Stock, Shares Authorized (in shares)         45,000,000 45,000,000 45,000,000      
Preferred Stock, Shares Authorized (in shares)         15,000,000 15,000,000 15,000,000      
Common Stock, Shares, Outstanding (in shares)         9,451,753 12,228,479 9,451,753      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)           436,863        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options and Warrants, Outstanding, Number (in shares)           826,375        
Preferred Stock, Shares Issued (in shares)           0        
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.01   $ 0.01 $ 0.01 $ 0.01      
Proceeds from Warrant Exercises | $         $ 0 $ 0 $ 6,886,000 $ 6,886,000    
January 2023 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input       0.0465            
January 2023 Warrants [Member] | Measurement Input, Expected Term [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input       1            
January 2023 Warrants [Member] | Measurement Input, Price Volatility [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input       0.404            
January 2023 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input       0            
December 2022 and January 2023 Warrants [Member]                    
Class of Stock [Line Items]                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 25              
Class of Warrant or Right, Exercised During Period (in shares)     313,000              
Proceeds from Warrant Exercises | $     $ 6,900,000              
Stock Issued During Period, Shares, Warrants Exercised (in shares)     313,000              
Fair Value Adjustment of Warrants | $     $ 383,000              
December 2022 and January 2023 Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     4.81              
December 2022 and January 2023 Warrants [Member] | Measurement Input, Expected Term [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     1              
December 2022 and January 2023 Warrants [Member] | Measurement Input, Price Volatility [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     42.5              
December 2022 and January 2023 Warrants [Member] | Measurement Input, Expected Dividend Rate [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     0              
Modified Warrants [Member]                    
Class of Stock [Line Items]                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 22              
New Warrants [Member]                    
Class of Stock [Line Items]                    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 30              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)     313,000              
New Warrants [Member] | Measurement Input, Risk Free Interest Rate [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     4.81              
New Warrants [Member] | Measurement Input, Expected Term [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     1.5              
New Warrants [Member] | Measurement Input, Price Volatility [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     43.7              
New Warrants [Member] | Measurement Input, Expected Dividend Rate [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input     0              
Sales Agreement [Member]                    
Class of Stock [Line Items]                    
Stock Issued During Period, Shares, New Issues (in shares)         52,915 87,815   158,461    
Proceeds from Issuance of Common Stock, Net | $         $ 1,100,000 $ 1,800,000   $ 4,100,000    
Balance remaining from sales agreement | $           $ 33,000,000        
Private Placement [Member]                    
Class of Stock [Line Items]                    
Stock Issued During Period, Shares, New Issues (in shares)       117,500            
Proceeds from Issuance of Common Stock, Net | $       $ 2,300,000            
Rights Agreement, Exercise Price (in dollars per share) | $ / shares       $ 25            
Private Placement Fee, Percentage       3.25%            
Private Placement [Member] | January 2023 Warrants [Member]                    
Class of Stock [Line Items]                    
Shares Issued, Price Per Share (in dollars per share) | $ / shares       $ 20            
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares       $ 25            
Underwritten Public Offering [Member]                    
Class of Stock [Line Items]                    
Stock Issued During Period, Shares, New Issues (in shares) 731,750 1,600,000                
Proceeds from Issuance of Common Stock, Net | $ $ 13,700,000 $ 28,200,000                
Shares Issued, Offering Price (in dollars per share) | $ / shares   $ 19                
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 20.5         $ 19.37     $ 17.77  
Warrant exercise price | $ / shares $ 26                  
Warrants exercisable term 36 months                  
Underwriting Agreement, Discount Percentage   6.50%       5.50%        
Underwritten Public Offering [Member] | Measurement Input, Risk Free Interest Rate [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input 4.57                  
Underwritten Public Offering [Member] | Measurement Input, Expected Term [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input 3                  
Underwritten Public Offering [Member] | Measurement Input, Price Volatility [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input 57                  
Underwritten Public Offering [Member] | Measurement Input, Expected Dividend Rate [Member] | Fair Value, Inputs, Level 2 [Member]                    
Class of Stock [Line Items]                    
Warrants and Rights Outstanding, Measurement Input 0                  
Cantor Fitzgerald & Co. [Member] | Sales Agreement [Member]                    
Class of Stock [Line Items]                    
Offering Agreement, Maximum Aggregate Common Shares May be Offered | $                   $ 40,000,000
Commission Fee, Percentage of Gross Proceeds of Shares Sold, Maximum                   2.75%
Restricted Stock [Member]                    
Class of Stock [Line Items]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number (in shares)         433,528 436,863 433,528 429,376