Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Outstanding Series C Preferred Stock Warrants (Detail)

v3.20.2
Stockholders' Equity - Schedule of Outstanding Series C Preferred Stock Warrants (Detail) - Series C Warrants [Member]
Sep. 30, 2020
$ / shares
shares
Issued warrants to underwriters 2,504
Issuance of Preferred Series C-1 Warrants  
Issued warrants to underwriters 1,959
Warrants exercise price | $ / shares $ 1.16
Issuance of Preferred Series C-2 Warrants  
Issued warrants to underwriters 219
Warrants exercise price | $ / shares $ 1.21
Issuance of Preferred Series C-3 Warrants  
Issued warrants to underwriters 326
Warrants exercise price | $ / shares $ 1.15