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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accumulated amortization | $ (24,160,885) | $ (20,173,881)
Balance | 39,866,820 |
Total, cost | 68,534,794 | 52,445,462
Intangible assets, net | 44,373,909 | 32,271,581
Easements [Member] |  |
Accumulated amortization | 0 | 0
Balance | 4,507,089 | 2,032,494
Customer Relationships [Member] |  |
Cost | 46,740,483 | 37,743,900
Accumulated amortization | (20,558,751) | (17,890,487)
Balance | 26,181,732 | 19,853,413
Permits, Licenses and Lease Acquisition Costs [Member] |  |
Cost | 11,053,673 | 10,305,521
Accumulated amortization | (2,412,313) | (1,443,337)
Balance | 8,641,360 | 8,862,184
Site Location [Member] |  |
Cost | 849,347 | 849,347
Accumulated amortization | (193,462) | (136,839)
Balance | 655,885 | 712,508
Noncompete Agreements [Member] |  |
Cost | 626,000 | 626,000
Accumulated amortization | (386,934) | (269,318)
Balance | 239,066 | 356,682
Technology-Based Intangible Assets [Member] |  |
Cost | 1,128,000 | 138,000
Accumulated amortization | (212,250) | (138,000)
Balance | 915,750 | 0
Trademarks and Trade Names [Member] |  |
Cost | 3,602,202 | 722,200
Accumulated amortization | (369,175) | (267,900)
Balance | 3,233,027 | 454,300
Nonsolicitation Agreement [Member] |  |
Cost | 28,000 | 28,000
Accumulated amortization | (28,000) | (28,000)
Balance | $ 0 | $ 0

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