Quarterly report pursuant to Section 13 or 15(d)

Convertible Instruments and Accrued Interest - Long-term Convertible Note - April 23, 2021 Note (Detail)

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Convertible Instruments and Accrued Interest - Long-term Convertible Note - April 23, 2021 Note (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
6 Months Ended
Apr. 23, 2021
Nov. 30, 2022
Aug. 31, 2022
May 31, 2021
Debt Instrument [Line Items]        
Debt issuance costs   $ 2,100    
Amortization of issuance discount and costs   1,190    
Net carrying value of note   $ 45,210   $ 42,215
Warrants to purchase common shares, shares     5.5  
Indemnitors        
Debt Instrument [Line Items]        
Warrants to purchase common shares, shares   45.0    
Long-term Convertible Note - April 23, 2021 Note        
Debt Instrument [Line Items]        
Debt instrument term 2 years      
Convertible note, aggregate principal $ 28,500      
Net Proceeds 25,000      
Unamortized discount 3,400      
Debt issuance costs $ 100      
Convertible notes, interest rate 10.00%      
Percentage increase in amount payable on default 15.00%      
Percentage increase in amount payable, second scenario 10.00%      
Percentage increase in amount payable, third default scenario 5.00%      
Conversion price per share $ 10.00      
Number of days of notice to be given for conversion of notes into common stock 5 days      
Shares reserved 6.0      
Debt instrument lock in period 6 months      
Number of days of notice to be given for redemption 3 days      
Threshold trading days to satisfy redemption obligation 3 days      
Debt instrument prepayment percentage premium 15.00%      
Number of days of notice to be given for prepayment 15 days      
Debt proceeds requiring investor consent $ 75,000      
Additional debt, increase in interest rate 5.00%      
Amortization of issuance discount and costs   $ 876    
Net carrying value of note   $ 32,847   $ 30,309
Maximum | Long-term Convertible Note - April 23, 2021 Note        
Debt Instrument [Line Items]        
Conversion of principal and interest of convertible notes to common stock $ 7,000      
Convertible notes, interest rate 22.00%