Note 12 - Commitments and Contingencies (Details Textual) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2022 |
Dec. 31, 2021 |
|
| Corporate Office Lease [Member] | ||
| Lessee, Operating Lease, Term of Contract (Month) | 12 months | 12 months |
| Lessee, Operating Lease, Monthly Lease Payment | $ 1,300 | $ 1,200 |
| Lessee, Operating Lease, Renewal Term (Month) | 12 months | |
| Minimum [Member] | ||
| General Product Liability Insurance | $ 5,000,000 | $ 5,000,000 |