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Warrants - Summary of Warrants Outstanding to Purchase Shares (Details)
3 Months Ended
Mar. 31, 2021
$ / shares
shares
Warrants And Rights Note Disclosure [Abstract]  
Number of warrants, Beginning balance | shares 42,772,992
Number of warrants, Exercised | shares (2,422,363)
Number of warrants, Ending balance | shares 40,350,629
Weighted average exercise price, Beginning balance | $ / shares $ 0.90
Weighted average exercise price, Exercised | $ / shares 0.65
Weighted average exercise price, Ending balance | $ / shares $ 0.92