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Summary of Stock Option Activity (Detail)
9 Months Ended
Mar. 31, 2022
USD ($)
$ / shares
shares
Number of Options  
Beginning Balance | shares 16,668,542
Granted | shares 6,694,734
Exercised | shares (348,547)
Forfeited / Cancelled | shares (2,423,119)
Ending balance | shares 20,591,610
Vested and exercisable at end of period | shares 10,115,129
Weighted- Average Exercise Price  
Beginning Balance | $ / shares $ 3.01
Granted | $ / shares 2.71
Exercised | $ / shares 1.64
Forfeited / Cancelled | $ / shares 3.15
Ending balance | $ / shares 2.91
Vested and exercisable at end of period | $ / shares $ 2.93
Weighted Average Remaining Contractual Term (in years)  
Outstanding at end of period 7 years 8 months 12 days
Vested and exercisable at end of period 6 years 4 months 24 days
Aggregate Intrinsic Value  
Outstanding at end of period | $ $ 738
Vested and exercisable at end of period | $ $ 0