Note 3 - Summary of Significant Accounting Policies (Details Textual) |
3 Months Ended | 9 Months Ended | |||
---|---|---|---|---|---|
Apr. 27, 2020
USD ($)
|
Sep. 30, 2020
shares
|
Sep. 30, 2020
USD ($)
shares
|
Sep. 30, 2019
USD ($)
|
Dec. 31, 2019
USD ($)
|
|
Number of Operating Segments | 2 | ||||
Accounts Receivable, Allowance for Credit Loss, Ending Balance | $ 10,000 | $ 10,000 | |||
Proceeds from Notes Payable, Total | $ 276,180 | ||||
Options and Warrants [Member] | |||||
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares | 7,477,171 | 5,004,415 | |||
Paycheck Protection Program CARES Act [Member] | |||||
Proceeds from Notes Payable, Total | $ 276,000 | ||||
Minimum [Member] | |||||
Property, Plant and Equipment, Useful Life (Year) | 2 years | ||||
Maximum [Member] | |||||
Property, Plant and Equipment, Useful Life (Year) | 7 years |