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Summary of Stock Option Activity (Detail)
6 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Number of Options  
Beginning Balance | shares 16,668,542
Granted | shares 5,573,734
Exercised | shares (102,047)
Forfeited / Cancelled | shares (1,778,214)
Ending balance | shares 20,362,015
Vested and exercisable at end of period | shares 10,129,870
Weighted- Average Exercise Price  
Beginning Balance | $ / shares $ 3.01
Granted | $ / shares 2.93
Exercised | $ / shares 2.09
Forfeited / Cancelled | $ / shares 3.13
Ending balance | $ / shares 2.98
Vested and exercisable at end of period | $ / shares $ 2.88
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 | $ $ 3,439,237
Vested and exercisable at end of period | $ $ 3,177,213