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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Accumulated amortization	$ (29,903,691)	$ (28,710,493)
Balance	37,919,564
Total, cost	73,380,741	74,062,545
Intangible assets, net	43,477,050	45,352,052
Easements [Member]
Accumulated amortization	0	0
Balance	5,557,486	5,463,526
Customer Relationships [Member]
Cost	48,758,977	49,535,976
Accumulated amortization	(24,399,908)	(23,611,856)
Balance	24,359,069	25,924,120
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	11,562,131	11,560,896
Accumulated amortization	(3,676,181)	(3,413,876)
Balance	7,885,950	8,147,020
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(264,047)	(250,085)
Balance	585,300	599,262
Noncompete Agreements [Member]
Cost	626,000	626,000
Accumulated amortization	(511,866)	(488,134)
Balance	114,134	137,866
Technology-Based Intangible Assets [Member]
Cost	1,128,000	1,128,000
Accumulated amortization	(335,661)	(311,250)
Balance	792,339	816,750
Trademarks and Trade Names [Member]
Cost	3,852,200	3,852,200
Accumulated amortization	(646,195)	(590,575)
Balance	3,206,005	3,261,625
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
Balance	0	0
Capitalized Contract Costs [Member]
Cost	1,018,600	1,018,600
Accumulated amortization	(41,833)	(16,717)
Balance	$ 976,767	$ 1,001,883

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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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