Note 3 - Leases - Balance Sheet Information (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Operating lease right-of-use	$ 4,678,293	$ 4,947,734
Operating lease liabilities - current	698,645	1,026,235
Operating lease liabilities – long-term	3,979,648	4,159,225
Total operating lease liability	4,678,293	5,185,460
Property and equipment, at cost	4,665,397	4,819,201
Accumulated depreciation	(1,419,620)	(1,389,488)
Property and equipment, net	3,245,777	3,429,713
Finance lease liabilities - current	387,999	394,839
Finance lease liabilities – long-term	2,817,567	3,112,496
Total finance lease liability	$ 3,205,566	$ 3,507,335
Operating leases (Year)	9 years 9 months 18 days	10 years
Finance leases (Year)	6 years 3 months 18 days	6 years 10 months 24 days
Operating leases	6.20%	6.20%
Finance leases	2.90%	2.80%