Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.19.3
Commitments and Contingencies - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Jan. 01, 2019
Sep. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2019
Operating Lease, Weighted Average Discount Rate, Percent   9.90% 9.90%    
Operating Lease, Cost   $ 50,000 $ 151,000    
Operating Lease, Payments   $ 75,000 224,000    
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability     $ 538,000 $ 0 $ 0
Operating Lease Expiration Year     2022    
ASU 2016-02          
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 538,000