Registration of securities issued in business combination transactions

Note 6 - Fair Value Measurements - Financial Assets Measured at Fair Value on Recurring Basis (Details)

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Note 6 - Fair Value Measurements - Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair value of contingent consideration $ 0 $ 682,000 $ 682,000 $ 0  
Fair Value, Recurring [Member]          
Fair value of contingent consideration       0 $ 930,000
Money Market Funds [Member] | Fair Value, Recurring [Member]          
Money market funds 809,997     58,242 1,660,663
Fair Value, Inputs, Level 1 [Member] | Fair Value, Recurring [Member]          
Fair value of contingent consideration       0 0
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member] | Fair Value, Recurring [Member]          
Money market funds 809,997     58,242 1,600,663
Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]          
Fair value of contingent consideration       0 0
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member] | Fair Value, Recurring [Member]          
Money market funds 0     0 0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Recurring [Member]          
Fair value of contingent consideration       0 930,000
Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member] | Fair Value, Recurring [Member]          
Money market funds $ 0     $ 0 $ 0