Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Goodwill and Purchased Intangibles (Details Textual)

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Note 4 - Goodwill and Purchased Intangibles (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Goodwill, Ending Balance $ 411,183   $ 411,183   $ 411,183
Amortization of Intangible Assets $ 35,724 $ 35,738 $ 107,211 $ 107,478  
Minimum [Member]          
Finite-Lived Intangible Asset, Useful Life (Year)     1 year    
Maximum [Member]          
Finite-Lived Intangible Asset, Useful Life (Year)     20 years