Note 5 - Goodwill and Other Intangible Assets, Net - Summary of Intangible Assets (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Other intangibles, gross	$ 13,840,149	$ 12,540,149
Less: accumulated amortization	3,522,815	3,203,585
Intangible assets, net	10,317,334	9,336,564
Customer-Related Intangible Assets [Member]
Other intangibles, gross	9,241,000	8,741,000
Noncompete Agreements [Member]
Other intangibles, gross	200,000	200,000
Trademarks [Member]
Other intangibles, gross	$ 4,399,149	$ 3,599,149