Note 7 - Subsequent Events (Details Textual) - USD ($) |
Nov. 04, 2021 |
Oct. 28, 2021 |
Sep. 30, 2021 |
Jan. 28, 2021 |
|---|---|---|---|---|
| Revolving Credit Facility [Member] | ||||
| Debt Instrument, Collateral Amount | $ 1,500,000 | $ 750,000 | ||
| Subsequent Event [Member] | Revolving Credit Facility [Member] | ||||
| Debt Instrument, Increase (Decrease) in Collateral Amount | $ 1,500,000 | |||
| Debt Instrument, Collateral Amount | $ 3,000,000 | |||
| Subsequent Event [Member] | Paycheck Protection Program CARES Act [Member] | ||||
| Debt Instrument, Decrease, Forgiveness | $ 1,999,175 |