Note 5 - Goodwill and Other Intangible Assets, Net - Summary of Intangible Assets (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Customer Intangibles	$ 9,830,000	$ 5,510,000
Less: Accumulated Amortization	2,271,691	1,559,162	$ 1,177,798
Other Intangibles, Net	7,558,309	3,950,838
Customer-Related Intangible Assets [Member]
Customer Intangibles	7,700,000	4,970,000
Noncompete Agreements [Member]
Customer Intangibles	200,000	200,000
Trademarks [Member]
Customer Intangibles	$ 1,930,000	$ 340,000