Note 8 - Lease Obligations - Lease Cost (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating lease costs	$ 287,108	$ 285,159
Short-term operating lease costs	7,200	12,066
Amortization of right-of-use assets	6,023	4,172
Interest on lease liabilities	395	649
Total financing lease expense	6,418	4,821
Total lease expense	300,726	302,046
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)	11 years 1 month 6 days	12 years 1 month 6 days
Weighted-average remaining lease term (years) - financing leases (Year)	1 year 2 months 12 days	1 year 1 month 6 days
Weighted-average discount rate - operating leases	6.75%	6.75%
Weighted-average discount rate - financing leases	6.75%	7.93%