Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Accumulated amortization	$ (4,905,055)	$ (3,456,290)
Balance	7,118,013
Total, cost	12,509,918	12,805,913
Intangible assets, net	7,604,863	9,349,623
Easements [Member]
Accumulated amortization
Balance	486,850	466,360
Customer Relationships [Member]
Cost	7,818,900	8,132,900
Accumulated amortization	(4,232,685)	(2,970,533)
Balance	3,586,215	5,162,367
Permits, Licenses and Lease Acquisition Costs [Member]
Cost	2,181,621	2,184,106
Accumulated amortization	(239,472)	(178,835)
Balance	1,942,149	2,005,271
Site Location [Member]
Cost	849,347	849,347
Accumulated amortization	(51,904)	(23,593)
Balance	797,443	825,754
Noncompete Agreements [Member]
Cost	285,000	285,000
Accumulated amortization	(94,917)	(66,417)
Balance	190,083	218,583
Trademarks and Trade Names [Member]
Cost	722,200	722,200
Accumulated amortization	(158,417)	(112,250)
Balance	563,783	609,950
Technology-Based Intangible Assets [Member]
Cost	138,000	138,000
Accumulated amortization	(99,660)	(76,662)
Balance	38,340	61,338
Nonsolicitation Agreement [Member]
Cost	28,000	28,000
Accumulated amortization	(28,000)	(28,000)
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