Annual report pursuant to Section 13 and 15(d)

Going Concern - Narrative (Details)

v3.22.2.2
Going Concern - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jul. 31, 2022
Jan. 31, 2022
Sep. 30, 2021
Aug. 31, 2022
Aug. 31, 2021
Going Concern [Line Items]          
Cash       $ 618 $ 1,199
Working capital deficit       31,200  
Net cash provided by (used in) operating activities       (17,520) (21,512)
Retained earnings (accumulated deficit)       (192,725) (149,338)
Proceeds from private placement offering, net of offering costs       4,183 11,062
Proceeds from warrant exercises $ 1,300 $ 5,900      
Proceeds from exercised warrants, net of offering costs $ 1,200 $ 5,400   $ 6,573 $ 0
Private Placement          
Going Concern [Line Items]          
Proceeds from issuance of private placement     $ 12,000    
Proceeds from private placement offering, net of offering costs     $ 11,100