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Note 6 - Leases - Maturity of Operating Lease (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
2020 (remaining) $ 123  
2021 508  
2022 0  
2023 0  
2024 0  
Thereafter 0  
Total undiscounted lease payments 631  
Discount to present value (35)  
Present value of lease liabilities $ 596 $ 701
Weighted average remaining lease term - years (Year) 10 months 24 days  
Weighted average discount rate - percent 12.00%