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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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