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Note 5 - Acquisition - Identifiable Intangible Assets (Details) - USD ($)
6 Months Ended
Jun. 30, 2021
Dec. 31, 2020
Gross identified intangible assets $ 1,490,000  
Accumulated amortization (43,851) $ 0
Net identifiable intangible assets 1,446,149 0
Goodwill 785,000 $ 0
Intangible assets 2,231,149  
Trade Names [Member]    
Gross carrying amount, infinite-lived assets $ 280,000  
Customer Relationships [Member]    
Useful Life (Year) 8 years  
Gross carrying amount, finite-lived assets $ 1,090,000  
Noncompete Agreements [Member]    
Useful Life (Year) 3 years  
Gross carrying amount, finite-lived assets $ 120,000