Annual report pursuant to Section 13 and 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)

v3.20.1
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 ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Beginning balance $ 210 $ 1,228
Additions 18 241
Change in fair value (204) 8,051
Reclass to additional paid-in capital 0 (9,310)
Ending balance $ 24 $ 210