Annual report pursuant to Section 13 and 15(d)

Leases - Additional Information (Details)

v3.21.1
Leases - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
May 01, 2020
Nov. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2019
Lessee Disclosure [Abstract]            
Operating lease, description     The Company leases its principal executive offices in Newark, California, under a non-cancelable operating lease which expires in October 2021.      
Operating lease, expiration period 2025-11 2022-07 2021-10      
Operating lease right-of-use asset $ 500   $ 882 $ 556   $ 900
Operating lease liability $ 500   945     $ 900
Operating lease, discount rate 3.85% 5.00%       6.00%
Operating lease cost recognized     $ 400 $ 300    
Rent expense         $ 600