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Note 2 - Fair Value of Financial Instruments - Financial Instruments (Details) - USD ($)
Dec. 31, 2025
Dec. 31, 2024
Estimate of Fair Value Measurement [Member]    
Total $ 18,010,108 $ 9,330,067
Reported Value Measurement [Member]    
Total 18,010,108 9,250,913
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents Excluding Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]    
Cash and cash equivalents, fair value 18,010,108 3,421,576
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents Excluding Certificates of Deposit [Member] | Reported Value Measurement [Member]    
Cash and cash equivalents, fair value 18,010,108 3,421,576
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]    
Cash and cash equivalents, fair value 0 5,908,491
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] | Reported Value Measurement [Member]    
Cash and cash equivalents, fair value $ 0 $ 5,829,337