Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Accumulated amortization	$ (18,854,683)	$ (9,492,947)
Balance	31,260,285
Total, cost	51,951,463	46,525,481
Intangible assets, net	33,096,780	37,032,534
Easements [Member]
Accumulated amortization
Balance	1,836,495	1,088,413
Customer Relationships [Member]
Cost	37,534,900	32,638,900
Accumulated amortization	(16,870,061)	(8,326,564)
Balance	20,664,839	24,312,336
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	10,216,521	9,599,621
Accumulated amortization	(1,207,276)	(559,285)
Balance	9,009,245	9,040,336
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(122,567)	(80,216)
Balance	726,780	769,131
Noncompete Agreements [Member]
Cost	626,000	614,000
Accumulated amortization	(237,862)	(145,517)
Balance	388,138	468,483
Trademarks and Trade Names [Member]
Cost	722,200	722,200
Accumulated amortization	(250,917)	(195,417)
Balance	471,283	526,783
Technology-Based Intangible Assets [Member]
Cost	138,000	138,000
Accumulated amortization	(138,000)	(122,657)
Balance		15,343
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
Balance
Off-Market Favorable Lease [Member]
Cost		847,000
Accumulated amortization		(35,291)
Balance		$ 811,709

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

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