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Note 5 - Property and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019
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Accumulated depreciation | $ (10,382,442) | $ (6,731,459)
Total Property and Equipment, net | 48,508,272 | 36,825,019
Structures and Displays [Member] |  |
Property, plant and equipment, gross | 42,858,525 | 41,320,458
Fiber, Towers, and Broadband Equipment [Member] |  |
Property, plant and equipment, gross | 11,358,650 | 0
Vehicles and Equipment [Member] |  |
Property, plant and equipment, gross | 2,522,810 | 1,245,210
Office Furniture and Equipment [Member] |  |
Property, plant and equipment, gross | $ 2,150,729 | $ 990,810

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