Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Commitments and Contingencies        
Operating Lease, Weighted Average Discount Rate, Percent 9.90%   9.90%  
Operating Lease, Cost $ 50,000 $ 50,000 $ 151,000 $ 151,000
Operating Lease, Payments $ 77,000 $ 75,000 231,000 224,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability     $ 0 $ 538,000
Operating Lease Expiration Year     2022