Quarterly report pursuant to Section 13 or 15(d)

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

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Stockholders' Equity - Schedule of Issuance of Series C Preferred Stock (Detail) - Preferred Stock Series C - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Class Of Stock [Line Items]    
Beginning Balance $ 14,652  
Beginning Balance, shares 20,092  
Issuance   $ 18,286
Issuance, Shares   25,028
Issued on exercise of Series C Agent Warrants   $ 79
Issued on exercise of Series C Agent Warrants, Shares   33
Conversion of Series C Preferred stock to common stock $ (1,256) $ (3,713)
Conversion of series C preferred stock to common stock, shares (1,710) (4,969)
Ending Balance $ 13,396 $ 14,652
Ending Balance, shares 18,382 20,092