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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Accumulated amortization	$ (28,710,493)	$ (24,160,885)
Balance	39,888,526
Accumulated amortization	28,710,493	24,160,885
Total, cost	74,062,545	68,534,794
Intangible assets, net	45,352,052	44,373,909
Easements [Member]
Accumulated amortization	0	0
Accumulated amortization	(0)	(0)
Balance	5,463,526	4,507,089
Customer Relationships [Member]
Cost	49,535,976	46,740,483
Accumulated amortization	(23,611,856)	(20,558,751)
Balance	25,924,120	26,181,732
Accumulated amortization	23,611,856	20,558,751
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	11,560,896	11,053,673
Accumulated amortization	(3,413,876)	(2,412,313)
Balance	8,147,020	8,641,360
Accumulated amortization	3,413,876	2,412,313
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(250,085)	(193,462)
Balance	599,262	655,885
Accumulated amortization	250,085	193,462
Noncompete Agreements [Member]
Cost	626,000	626,000
Accumulated amortization	(488,134)	(386,934)
Balance	137,866	239,066
Accumulated amortization	488,134	386,934
Technology-Based Intangible Assets [Member]
Cost	1,128,000	1,128,000
Accumulated amortization	(311,250)	(212,250)
Balance	816,750	915,750
Accumulated amortization	311,250	212,250
Trademarks and Trade Names [Member]
Cost	3,852,200	3,602,202
Accumulated amortization	(590,575)	(369,175)
Balance	3,261,625	3,233,027
Accumulated amortization	590,575	369,175
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
Balance	0	0
Accumulated amortization	28,000	28,000
Capitalized Contract Costs [Member]
Cost	1,018,600	0
Accumulated amortization	16,717	0
Balance	1,001,883	0
Accumulated amortization	$ (16,717)	$ 0

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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