Note 8 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Accumulated amortization	$ (24,160,885)	$ (20,173,881)
Balance	39,866,820
Total, cost	68,534,794	52,445,462
Intangible assets, net	44,373,909	32,271,581
Easements [Member]
Accumulated amortization	0	0
Balance	4,507,089	2,032,494
Customer Relationships [Member]
Cost	46,740,483	37,743,900
Accumulated amortization	(20,558,751)	(17,890,487)
Balance	26,181,732	19,853,413
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	11,053,673	10,305,521
Accumulated amortization	(2,412,313)	(1,443,337)
Balance	8,641,360	8,862,184
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(193,462)	(136,839)
Balance	655,885	712,508
Noncompete Agreements [Member]
Cost	626,000	626,000
Accumulated amortization	(386,934)	(269,318)
Balance	239,066	356,682
Technology-Based Intangible Assets [Member]
Cost	1,128,000	138,000
Accumulated amortization	(212,250)	(138,000)
Balance	915,750	0
Trademarks and Trade Names [Member]
Cost	3,602,202	722,200
Accumulated amortization	(369,175)	(267,900)
Balance	3,233,027	454,300
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
Balance	$ 0	$ 0

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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