Annual report pursuant to Section 13 and 15(d)

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

v3.23.2
Convertible Instruments and Accrued Interest - Convertible Note - April 23, 2021 Note (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
12 Months Ended
Apr. 23, 2021
May 31, 2023
Mar. 31, 2023
May 31, 2022
Apr. 02, 2021
Debt Instrument [Line Items]          
Consideration received   $ 696      
Unamortized discount         $ 3,400
Amortization of issuance discount and costs   2,195      
Net carrying value of note   $ 45,729   $ 42,215  
Warrants to purchase common shares, shares     71.1    
Indemnitors          
Debt Instrument [Line Items]          
Warrants to purchase common shares, shares   45.0      
Private Equity Offering          
Debt Instrument [Line Items]          
Debt issuance costs   $ 9,700      
Warrants to purchase common shares, shares   5.5      
Convertible Note - April 23, 2021 Note          
Debt Instrument [Line Items]          
Debt instrument term 2 years        
Convertible note, aggregate principal $ 28,500        
Debt instrument, extended term 2 years        
Consideration received $ 25,000        
Unamortized discount 3,400        
Debt issuance costs 100        
Conversion of principal and interest of convertible notes to common stock $ 7,000        
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%        
Beneficial conversion feature $ 0        
Amortization of issuance discount and costs   $ 1,613      
Net carrying value of note   $ 35,336   $ 30,309  
Maximum | Convertible Note - April 23, 2021 Note          
Debt Instrument [Line Items]          
Convertible notes, interest rate 22.00%