Note 7 - Intangible Assets - Schedule of Future Amortization, Intangible Assets Acquired in Acquisitions (Details) - USD ($)	9 Months Ended
Sep. 30, 2018	Dec. 31, 2017
2018	$ 11,597,033
2019	10,437,602
2020	8,726,833
2021	1,224,365
2022	1,193,881
Thereafter	6,321,592
Total	39,501,306
Customer Relationships [Member]
2018	10,306,727
2019	9,186,562
2020	7,492,718
2021
2022
Thereafter
Total	$ 26,986,007	$ 5,162,367
Intangible assets, weighted average useful life (Month)	2 years 180 days
Permits, Licenses and Lease Acquisition Costs [Member]
2018	$ 867,542
2019	867,542
2020	867,542
2021	867,542
2022	867,542
Thereafter	4,921,745
Total	$ 9,259,455	2,005,271
Intangible assets, weighted average useful life (Month)	10 years 240 days
Site Location [Member]
2018	$ 56,623
2019	56,623
2020	56,623
2021	56,623
2022	56,623
Thereafter	500,172
Total	$ 783,287	825,754
Intangible assets, weighted average useful life (Month)	13 years 300 days
Noncompete Agreements [Member]
2018	$ 122,800
2019	118,717
2020	102,550
2021	92,800
2022	62,316
Thereafter
Total	$ 499,183	218,583
Intangible assets, weighted average useful life (Month)	4 years 30 days
Trademarks and Trade Names [Member]
2018	$ 74,000
2019	65,658
2020	64,900
2021	64,900
2022	64,900
Thereafter	210,925
Total	$ 545,283	609,950
Intangible assets, weighted average useful life (Month)	5 years 120 days
Technology-Based Intangible Assets [Member]
2018	$ 26,841
2019
2020
2021
2022
Thereafter
Total	$ 26,841	61,338
Intangible assets, weighted average useful life (Month)	210 days
Off-Market Favorable Lease [Member]
2018	$ 142,500
2019	142,500
2020	142,500
2021	142,500
2022	142,500
Thereafter	688,750
Total	$ 1,401,250
Intangible assets, weighted average useful life (Month)	9 years 300 days

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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