Note 5 - Operating Lease Right-of-use Asset, Net (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
|
Operating Lease, Expense | $ 150,000 | $ 150,000 | $ 301,000 | $ 301,000 |
Operating Lease, Payments | $ 162,000 | $ 158,000 | $ 324,000 | $ 315,000 |
Operating Lease, Weighted Average Remaining Lease Term (Year) | 6 months | 6 months | ||
Operating Lease, Weighted Average Discount Rate, Percent | 12.05% | 12.05% |