Quarterly report pursuant to Section 13 or 15(d)

Equity (Details) - Schedule of warrant activities

v3.20.2
Equity (Details) - Schedule of warrant activities - Pre-funded Warrants [Member]
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Class of Warrant or Right [Line Items]  
Outstanding, Beginning | shares
Outstanding, Beginning | $ / shares
Outstanding, Beginning | $
Number of shares granted | shares 3,459
Weighted average exercise price granted | $ / shares $ 0.003
Number of shares exercised | shares (1,611)
Weighted average exercise price exercised | $ / shares $ 0.003
Outstanding, Ending | shares 1,848
Outstanding, Ending | $ / shares $ 0.003
Outstanding, Ending | $ $ 17,900
Number of shares exercisable | shares 1,848
Weighted average exercise price exercisable | $ / shares $ 0.003
Aggregate intrinsic value exercisable | $ $ 17,900