v3.25.2
Note 4 - Fair Value of Financial Instruments - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Marketable securities $ 25,210,453 $ 29,922,523
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]    
Marketable securities 17,741,598 18,032,943
US Treasury Securities [Member]    
Marketable securities 1,981,780 3,938,520
Corporate Debt Securities [Member]    
Marketable securities 1,491,555  
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]    
Total assets measured at fair value 6,859,363 7,559,336
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Marketable securities 0  
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]    
Cash equivalents (money market accounts) 6,859,363 7,559,336
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]    
Total assets measured at fair value 25,210,453 29,922,523
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]    
Marketable securities 17,741,598 18,032,943
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Marketable securities 3,995,520 7,951,060
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]    
Marketable securities 1,981,780 3,938,520
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Marketable securities 1,491,555  
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]    
Cash equivalents (money market accounts) 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]    
Total assets measured at fair value 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]    
Marketable securities 0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Corporate Debt Securities [Member]    
Marketable securities 0  
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]    
Cash equivalents (money market accounts) $ 0 $ 0