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Note 5 - Fair Value of Financial Instruments - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Commercial paper	$ 38,913,236
Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Commercial paper	23,616,596
US Treasury Securities [Member]
Commercial paper	5,885,900
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]
Total assets measured at fair value	6,171,726	$ 7,792,846
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Commercial paper	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Commercial paper	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]
Commercial paper	0
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]
Cash equivalents (money market accounts)	6,171,726	7,792,846
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]
Total assets measured at fair value	38,913,236	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | Commercial Paper, Not Included with Cash and Cash Equivalents [Member]
Commercial paper	23,616,596
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Commercial paper	9,410,740
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]
Commercial paper	5,885,900
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]
Commercial paper	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Treasury Securities [Member]
Commercial paper	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | US Government Debt Securities [Member]
Commercial paper	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member] | Money Market Funds [Member]
Cash equivalents (money market accounts)	$ 0	$ 0

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Fair value portion of asset recognized for present right to economic benefit.

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