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Note 2 - Fair Value of Financial Instruments - Financial Instruments (Details) - USD ($)
Sep. 30, 2024
Dec. 31, 2023
Reported Value Measurement [Member]    
Total $ 9,188,108 $ 9,071,862
Estimate of Fair Value Measurement [Member]    
Total 9,150,632 9,046,364
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 3,318,637 7,546,689
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 3,318,637 7,546,689
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] | Reported Value Measurement [Member]    
Cash and cash equivalents, fair value 5,869,471 1,525,173
Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member] | Estimate of Fair Value Measurement [Member]    
Cash and cash equivalents, fair value $ 5,831,995 $ 1,499,675