Note 3 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Intangible asset, gross	$ 6,435,580	$ 6,404,012
Accumulated amortizatio	(3,146,752)	(2,770,592)
Finite-Lived Intangible Assets, Net, Ending Balance	3,288,828	3,633,420
Patents [Member]
Intangible asset, gross	16,000	16,000
Accumulated amortizatio	(16,000)	(16,000)
Finite-Lived Intangible Assets, Net, Ending Balance	0	0
Trade Names [Member]
Intangible asset, gross	844,169	839,816
Accumulated amortizatio	(799,022)	(668,929)
Finite-Lived Intangible Assets, Net, Ending Balance	45,147	170,887
Technology and Software [Member]
Intangible asset, gross	622,874	620,094
Accumulated amortizatio	(622,874)	(620,094)
Finite-Lived Intangible Assets, Net, Ending Balance	0	0
Customer Relationships [Member]
Intangible asset, gross	4,952,537	4,928,102
Accumulated amortizatio	(1,708,856)	(1,465,569)
Finite-Lived Intangible Assets, Net, Ending Balance	$ 3,243,681	$ 3,462,533