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 6 Months Ended
Jan. 01, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Operating Lease, Weighted Average Discount Rate, Percent   9.90%   9.90%  
Operating Lease, Cost   $ 50,000 $ 50,000 $ 101,000 $ 101,000
Operating Lease, Payments   $ 77,000 $ 75,000 154,000 149,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability       $ 0 $ 538,000
Operating Lease Expiration Year       2022  
ASU 2016-02          
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 538,000