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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Accumulated amortization	$ (22,156,126)	$ (20,173,881)
Balance	31,898,330
Total, cost	57,932,610	52,445,462
Intangible assets, net	35,776,484	32,271,581
Easements [Member]
Accumulated amortization	0	0
Balance	3,878,154	2,032,494
Customer Relationships [Member]
Cost	39,032,900	37,743,900
Accumulated amortization	(19,237,453)	(17,890,487)
Balance	19,795,447	19,853,413
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	10,698,009	10,305,521
Accumulated amortization	(1,920,156)	(1,443,337)
Balance	8,777,853	8,862,184
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(164,996)	(136,839)
Balance	684,351	712,508
Noncompete Agreements [Member]
Cost	626,000	626,000
Accumulated amortization	(330,564)	(269,318)
Balance	295,436	356,682
Trademarks and Trade Names [Member]
Cost	1,692,200	722,200
Accumulated amortization	(312,387)	(267,900)
Balance	1,379,813	454,300
Technology-Based Intangible Assets [Member]
Cost	1,128,000	138,000
Accumulated amortization	(162,570)	(138,000)
Balance	965,430	0
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
Balance	$ 0	$ 0

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