Note 3 - Revenue From Contracts With Customers (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss, Ending Balance	$ 0		$ 0
Contract with Customer, Liability, Revenue Recognized	55,531	$ 55,665
Capitalized Contract Cost, Net	$ 0		$ 0