Note 9 - Leases - Lease Cost (Details) - USD ($)	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating lease costs	$ 143,554	$ 150,732
Short-term operating lease costs	4,658	3,600
Amortization of right-of-use assets	1,523	4,550
Interest on lease liabilities	74	270
Total financing lease expense	1,597	4,820
Total lease expense	149,809	159,152
Right-of-use assets obtained in exchange for new operating lease liabilities	0	0
Right-of-use assets obtained in exchange for new financing lease liabilities	$ 0	$ 0
Weighted-average remaining lease term (years) - operating leases (Year)	10 years 7 months 6 days	11 years 7 months 6 days
Weighted-average remaining lease term (years) - financing leases (Year)	4 months 24 days	1 year 4 months 24 days
Weighted-average discount rate - operating leases	6.75%	6.75%
Weighted-average discount rate - financing leases	6.75%	6.75%