Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Outstanding Under the Legacy Plan (Detail)

v3.21.2
Stockholders' Equity - Schedule of Outstanding Under the Legacy Plan (Detail)
3 Months Ended
Sep. 30, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Granted 435,000
Ending balance 6,809,000
Stock options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Beginning balance 6,392,000
Granted 435,000
Expired (18)
Ending balance 6,809,000
Beginning balance | $ / shares $ 2.26
Granted | $ / shares 1.24
Expired | $ / shares 13.11
Ending balance | $ / shares $ 2.16