Note 7 - Intangible Assets - Schedule of Future Amortization, Intangible Assets Acquired in Acquisitions (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
2019	$ 11,386,782
2020	9,939,931
2021	6,566,661
2022	1,161,731
2023	1,117,465
Thereafter	5,771,551
Total	35,944,121
Customer Relationships [Member]
2019	10,167,291
2020	8,750,949
2021	5,394,096
2022
2023
Thereafter
Total	$ 24,312,336	$ 5,162,367
Intangible assets, weighted average useful life (Month)	2 years 90 days
Permits, Licenses and Lease Acquisition Costs [Member]
2019	$ 867,542
2020	867,542
2021	867,542
2022	867,542
2023	867,542
Thereafter	4,702,626
Total	$ 9,040,336	2,005,271
Intangible assets, weighted average useful life (Month)	10 years 150 days
Site Location [Member]
2019	$ 56,623
2020	56,623
2021	56,623
2022	56,623
2023	56,623
Thereafter	486,016
Total	$ 769,131	825,754
Intangible assets, weighted average useful life (Month)	13 years 210 days
Noncompete Agreements [Member]
2019	$ 122,800
2020	115,217
2021	98,800
2022	87,966
2023	43,700
Thereafter
Total	$ 468,483	218,583
Intangible assets, weighted average useful life (Month)	3 years 300 days
Trademarks and Trade Names [Member]
2019	$ 72,483
2020	64,900
2021	64,900
2022	64,900
2023	64,900
Thereafter	194,700
Total	$ 526,783	609,950
Intangible assets, weighted average useful life (Month)	5 years 60 days
Technology-Based Intangible Assets [Member]
2019	$ 15,343
2020
2021
2022
2023
Thereafter
Total	$ 15,343	61,338
Intangible assets, weighted average useful life (Month)	120 days
Off-Market Favorable Lease [Member]
2019	$ 84,700
2020	84,700
2021	84,700
2022	84,700
2023	84,700
Thereafter	388,209
Total	$ 811,709
Intangible assets, weighted average useful life (Month)	9 years 210 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 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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