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Summary of Business and Significant Accounting Policies - ESPP and Stock Option Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jun. 01, 2022
Jun. 01, 2021
Sep. 30, 2022
Sep. 30, 2021
Assumptions        
Dividend yield     0.00%  
Stock Options        
Stock-based awards        
Options granted during period     100,867 2,950,560
Options granted during period, weighted-average price (in dollars per share)     $ 5.04 $ 7.30
Total unrecognized compensation cost, net of forfeitures, of all options granted but not yet vested     $ 9.4  
Weighted average period over which unrecognized compensation is expected to be recognized     1 year 6 months  
Issuance of common stock upon exercise of stock options (in shares)     7,225 156,170
Assumptions        
Expected volatility     65.00% 70.00%
Average risk-free interest rate     3.23% 0.80%
Expected life (in years)     4 years 7 months 13 days 4 years 8 months 4 days
Dividend yield     0.00% 0.00%
Employee Stock Purchase Plan (ESPP)        
ESPP        
Percentage of stock price at which stock can be purchased     85.00%  
Purchase period     6 months  
ESPP purchase rights granted 97,982 80,018    
ESPP shares available for issuance     1,097,360  
Employee Stock Purchase Plan (ESPP) | Minimum        
ESPP        
Percentage of base earnings that can be withheld     1.00%  
Employee Stock Purchase Plan (ESPP) | Maximum        
ESPP        
Offering period     27 months  
Percentage of base earnings that can be withheld     15.00%