Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Accumulated amortization	$ (9,492,947)	$ (3,456,290)
Balance	35,944,121
Total, cost	46,525,481	12,805,913
Intangible assets, net	37,032,534	9,349,623
Easements [Member]
Accumulated amortization
Balance	1,088,413	466,360
Customer Relationships [Member]
Cost	32,638,900	8,132,900
Accumulated amortization	(8,326,564)	(2,970,533)
Balance	24,312,336	5,162,367
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	9,599,621	2,184,106
Accumulated amortization	(559,285)	(178,835)
Balance	9,040,336	2,005,271
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(80,216)	(23,593)
Balance	769,131	825,754
Noncompete Agreements [Member]
Cost	614,000	285,000
Accumulated amortization	(145,517)	(66,417)
Balance	468,483	218,583
Trademarks and Trade Names [Member]
Cost	722,200	722,200
Accumulated amortization	(195,417)	(112,250)
Balance	526,783	609,950
Technology-Based Intangible Assets [Member]
Cost	138,000	138,000
Accumulated amortization	(122,657)	(76,662)
Balance	15,343	61,338
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

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