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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Accumulated amortization | $ (28,710,493) | $ (24,160,885)
Balance | 39,888,526 |
Accumulated amortization | 28,710,493 | 24,160,885
Total, cost | 74,062,545 | 68,534,794
Intangible assets, net | 45,352,052 | 44,373,909
Easements [Member] |  |
Accumulated amortization | 0 | 0
Accumulated amortization | (0) | (0)
Balance | 5,463,526 | 4,507,089
Customer Relationships [Member] |  |
Cost | 49,535,976 | 46,740,483
Accumulated amortization | (23,611,856) | (20,558,751)
Balance | 25,924,120 | 26,181,732
Accumulated amortization | 23,611,856 | 20,558,751
Permits, Licenses and Lease Acquisition Costs [Member] |  |
Cost | 11,560,896 | 11,053,673
Accumulated amortization | (3,413,876) | (2,412,313)
Balance | 8,147,020 | 8,641,360
Accumulated amortization | 3,413,876 | 2,412,313
Site Location [Member] |  |
Cost | 849,347 | 849,347
Accumulated amortization | (250,085) | (193,462)
Balance | 599,262 | 655,885
Accumulated amortization | 250,085 | 193,462
Noncompete Agreements [Member] |  |
Cost | 626,000 | 626,000
Accumulated amortization | (488,134) | (386,934)
Balance | 137,866 | 239,066
Accumulated amortization | 488,134 | 386,934
Technology-Based Intangible Assets [Member] |  |
Cost | 1,128,000 | 1,128,000
Accumulated amortization | (311,250) | (212,250)
Balance | 816,750 | 915,750
Accumulated amortization | 311,250 | 212,250
Trademarks and Trade Names [Member] |  |
Cost | 3,852,200 | 3,602,202
Accumulated amortization | (590,575) | (369,175)
Balance | 3,261,625 | 3,233,027
Accumulated amortization | 590,575 | 369,175
Nonsolicitation Agreement [Member] |  |
Cost | 28,000 | 28,000
Accumulated amortization | (28,000) | (28,000)
Balance | 0 | 0
Accumulated amortization | 28,000 | 28,000
Capitalized Contract Costs [Member] |  |
Cost | 1,018,600 | 0
Accumulated amortization | 16,717 | 0
Balance | 1,001,883 | 0
Accumulated amortization | $ (16,717) | $ 0

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