Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Cash flows) (Details)

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Commitments and Contingencies (Cash flows) (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Commitments and Contingencies    
Operating cash flows from operating leases   $ 52
Operating cash flows from operating leases $ (41)  
Weighted-average remaining lease term - operating leases 3 years 4 months 24 days 4 years 6 months
Weighted-average discount rate - operating leases 8.98% 8.96%