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Note 7 - Intangible Assets - Schedule of Future Amortization, Intangible Assets (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
2021 $ 4,762,987  
2022 4,748,999  
2023 4,695,380  
2024 4,666,377  
2025 4,645,391  
Thereafter 16,733,512  
Total 40,252,646  
Customer Relationships [Member]    
2021 3,267,666  
2022 3,267,666  
2023 3,267,666  
2024 3,267,666  
2025 3,267,666  
Thereafter 10,396,077  
Total $ 26,734,407 $ 26,181,732
Customer Relationships [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 98 months  
Permits, Licenses and Lease Acquisition Costs [Member]    
2021 $ 1,033,348  
2022 1,033,348  
2023 1,033,348  
2024 1,033,348  
2025 1,013,202  
Thereafter 3,445,695  
Total $ 8,592,289 8,641,360
Permits, Licenses and Lease Acquisition Costs [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 100 months  
Site Location [Member]    
2021 $ 56,623  
2022 56,623  
2023 56,623  
2024 56,623  
2025 56,623  
Thereafter 358,806  
Total $ 641,921 655,885
Site Location [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 136 months  
Noncompete Agreements [Member]    
2021 $ 97,450  
2022 83,462  
2023 29,843  
2024 840  
2025 0  
Thereafter 0  
Total $ 211,595 239,066
Noncompete Agreements [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 23 months  
Trademarks and Trade Names [Member]    
2021 $ 208,900  
2022 208,900  
2023 208,900  
2024 208,900  
2025 208,900  
Thereafter 2,136,595  
Total $ 3,181,095 3,233,027
Trademarks and Trade Names [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 183 months  
Technology-Based Intangible Assets [Member]    
2021 $ 99,000  
2022 99,000  
2023 99,000  
2024 99,000  
2025 99,000  
Thereafter 396,339  
Total $ 891,339 $ 915,750
Technology-Based Intangible Assets [Member] | Weighted Average [Member]    
Intangible assets, weighted average useful life (Month) 108 months