Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Summary of changes in fair value of the Company's warrant liability measured at fair value using significant unobservable inputs (Level 3) (Details)

v3.20.2
Fair Value Measurements - Summary of changes in fair value of the Company's warrant liability measured at fair value using significant unobservable inputs (Level 3) (Details) - Warrant [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Beginning balance $ 0 $ 39 $ 24 $ 210
Additions 0 0 0 4
Change in fair value 0 (18) (24) (193)
Ending balance $ 0 $ 21 $ 0 $ 21