Note 3 - Leases - Balance Sheet Information (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Operating lease right-of-use	$ 4,817,875	$ 5,053,614
Operating lease liabilities – current	953,087	999,685
Operating lease liabilities – long-term	4,028,986	4,141,855
Total lease liability	4,982,073	5,141,540
Property and equipment, at cost	1,429,958	1,362,272
Accumulated depreciation	(1,243,193)	(1,156,145)
Property and equipment, net	186,765	206,127
Finance lease liabilities - current	37,620	34,772
Finance lease liabilities – long-term	152,476	172,273
Total lease liability	$ 190,096	$ 207,045
Operating leases (Year)	10 years 2 months 12 days	10 years 2 months 12 days
Finance leases (Year)	4 years 9 months 18 days	5 years 6 months
Operating leases	6.30%	6.40%
Finance leases	3.90%	3.90%