v3.26.1
Note 5 - Stockholders' Equity (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Mar. 27, 2026
Dec. 17, 2025
Oct. 02, 2025
Oct. 31, 2025
Mar. 31, 2026
Jun. 30, 2026
Jun. 30, 2025
Jun. 10, 2026
Dec. 31, 2025
Common Stock, Shares Authorized (in shares)           450,000,000   450,000,000 300,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share)           $ 0.01   $ 0.01 $ 0.01
Common stock, shares issued (in shares)           173,595,201     159,444,017
Common stock, shares outstanding (in shares)           173,595,201     159,444,017
Proceeds from issuance of common stock     $ 138,000,000     $ 3,250,000 $ 0    
Underwriting discounts and commissions and other cash equity issuance costs           74,000 $ 178,000    
Minimum [Member]                  
Common Stock, Shares Authorized (in shares)               300,000,000  
October Two Thousand Twenty Five Offering [Member]                  
Proceeds from issuance of common stock     127,600,000 $ 138,000,000          
Underwriting discounts and commissions and other cash equity issuance costs     $ 10,400,000            
Iterative Health Common Stock Purchase Agreement [Member]                  
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01                
Offering shares (Per share) 1,536,885                
Purchase price $ 3,000,000                
Shares Sold, Price Per Share $ 1.952                
Iterative Health Common Stock Purchase Agreement [Member] | Additional Paid In Capital [Member]                  
Underwriting discounts and commissions and other cash equity issuance costs $ 28,000                
CCF Funding Agreement [Member]                  
Common Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01        
Investment support   $ 500,000       $ 500,000      
First milestone payble amount   $ 250,000     $ 250,000        
Offering shares (Per share)         191,717        
CCF Funding Agreement [Member] | Common Stock [Member]                  
Percentage of closing price           80.00%      
Series A 4.5% Convertible Preferred Stock [Member]                  
Preferred stock, shares authorized (in shares)           1,000,000      
Preferred Stock, Par or Stated Value Per Share (in dollars per share)           $ 0.01      
Convertible Preferred Stock, Issuable Upon Conversion of All Shares (in shares)           8      
Series A Preferred Stock [Member]                  
Preferred stock, shares authorized (in shares)           7,000,000     7,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)           $ 0.01     $ 0.01
Common stock, shares issued (in shares)           200,000      
Common stock, shares outstanding (in shares)           200,000