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Note 7 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accumulated amortization | $ (29,903,691) | $ (28,710,493)
Balance | 37,919,564 |
Total, cost | 73,380,741 | 74,062,545
Intangible assets, net | 43,477,050 | 45,352,052
Easements [Member] |  |
Accumulated amortization | 0 | 0
Balance | 5,557,486 | 5,463,526
Customer Relationships [Member] |  |
Cost | 48,758,977 | 49,535,976
Accumulated amortization | (24,399,908) | (23,611,856)
Balance | 24,359,069 | 25,924,120
Permits, Licenses and Lease Acquisition Costs [Member] |  |
Cost | 11,562,131 | 11,560,896
Accumulated amortization | (3,676,181) | (3,413,876)
Balance | 7,885,950 | 8,147,020
Site Location [Member] |  |
Cost | 849,347 | 849,347
Accumulated amortization | (264,047) | (250,085)
Balance | 585,300 | 599,262
Noncompete Agreements [Member] |  |
Cost | 626,000 | 626,000
Accumulated amortization | (511,866) | (488,134)
Balance | 114,134 | 137,866
Technology-Based Intangible Assets [Member] |  |
Cost | 1,128,000 | 1,128,000
Accumulated amortization | (335,661) | (311,250)
Balance | 792,339 | 816,750
Trademarks and Trade Names [Member] |  |
Cost | 3,852,200 | 3,852,200
Accumulated amortization | (646,195) | (590,575)
Balance | 3,206,005 | 3,261,625
Nonsolicitation Agreement [Member] |  |
Cost | 28,000 | 28,000
Accumulated amortization | (28,000) | (28,000)
Balance | 0 | 0
Capitalized Contract Costs [Member] |  |
Cost | 1,018,600 | 1,018,600
Accumulated amortization | (41,833) | (16,717)
Balance | $ 976,767 | $ 1,001,883

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