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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Accumulated amortization | $ (23,186,522) | $ (20,173,881)
Balance | 31,178,572 |
Total, cost | 58,605,096 | 52,445,462
Intangible assets, net | 35,418,574 | 32,271,581
Easements [Member] |  |
Accumulated amortization | 0 | 0
Balance | 4,240,002 | 2,032,494
Customer Relationships [Member] |  |
Cost | 39,321,524 | 37,743,900
Accumulated amortization | (19,926,167) | (17,890,487)
Balance | 19,395,357 | 19,853,413
Permits, Licenses and Lease Acquisition Costs [Member] |  |
Cost | 10,720,023 | 10,305,521
Accumulated amortization | (2,166,042) | (1,443,337)
Balance | 8,553,981 | 8,862,184
Site Location [Member] |  |
Cost | 849,347 | 849,347
Accumulated amortization | (179,229) | (136,839)
Balance | 670,118 | 712,508
Noncompete Agreements [Member] |  |
Cost | 626,000 | 626,000
Accumulated amortization | (358,981) | (269,318)
Balance | 267,019 | 356,682
Technology-Based Intangible Assets [Member] |  |
Cost | 1,128,000 | 138,000
Accumulated amortization | (187,410) | (138,000)
Balance | 940,590 | 0
Trademarks and Trade Names [Member] |  |
Cost | 1,692,200 | 722,200
Accumulated amortization | (340,693) | (267,900)
Balance | 1,351,507 | 454,300
Nonsolicitation Agreement [Member] |  |
Cost | 28,000 | 28,000
Accumulated amortization | (28,000) | (28,000)
Balance | $ 0 | $ 0

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