Note 7 - Intangible Assets - Schedule of Future Amortization, Intangible Assets Acquired in Acquisitions (Details) - USD ($)	6 Months Ended
Jun. 30, 2018	Dec. 31, 2017
2018	$ 2,607,943
2019	1,517,390
2020	407,067
2021	275,265
2022	255,431
Thereafter	2,054,917
Total	7,118,013
Customer Relationships [Member]
2018	2,256,238
2019	1,210,675
2020	119,302
2021
2022
Thereafter
Total	$ 3,586,215	$ 5,162,367
Intangible assets, weighted average useful life (Month)	1 year 150 days
Permits, Licenses and Lease Acquisition Costs [Member]
2018	$ 125,742
2019	125,742
2020	125,742
2021	125,742
2022	125,742
Thereafter	1,313,439
Total	$ 1,942,149	2,005,271
Intangible assets, weighted average useful life (Month)	15 years 150 days
Site Location [Member]
2018	$ 56,623
2019	56,623
2020	56,623
2021	56,623
2022	56,623
Thereafter	514,328
Total	$ 797,443	825,754
Intangible assets, weighted average useful life (Month)	14 years 30 days
Noncompete Agreements [Member]
2018	$ 57,000
2019	56,417
2020	40,500
2021	28,000
2022	8,166
Thereafter
Total	$ 190,083	218,583
Intangible assets, weighted average useful life (Month)	3 years 120 days
Trademarks and Trade Names [Member]
2018	$ 74,000
2019	67,933
2020	64,900
2021	64,900
2022	64,900
Thereafter	227,150
Total	$ 563,783	609,950
Intangible assets, weighted average useful life (Month)	5 years 210 days
Technology-Based Intangible Assets [Member]
2018	$ 38,340
2019
2020
2021
2022
Thereafter
Total	$ 38,340	$ 61,338
Intangible assets, weighted average useful life (Month)	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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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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

+ References

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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