Annual report pursuant to Section 13 and 15(d)

Convertible Instruments and Accrued Interest - Long-term Convertible Note - November 2020 Note (Detail)

v3.22.2.2
Convertible Instruments and Accrued Interest - Long-term Convertible Note - November 2020 Note (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Nov. 10, 2020
Aug. 31, 2021
Jul. 31, 2021
Jun. 30, 2021
Feb. 28, 2022
Nov. 30, 2021
Aug. 31, 2021
Feb. 28, 2021
Nov. 30, 2020
Nov. 30, 2021
Nov. 30, 2020
Feb. 28, 2022
Feb. 28, 2021
May 31, 2022
May 31, 2021
May 31, 2020
Apr. 02, 2021
Debt Instrument [Line Items]                                  
Net Proceeds                             $ 100,000 $ 15,000  
Unamortized discount                                 $ 3,400
Loss on induced conversion         $ (12,066) $ (6,785) $ (18,530)   $ (6,724) $ (25,315) $ (6,724) $ (37,381) $ (6,724) $ (37,381) (39,131)    
Amortization of issuance discount and costs                           3,045      
Accrued interest on convertible notes                           5,974 2,007    
Interest on convertible notes                           5,417 4,387 7,330  
Previously Reported                                  
Debt Instrument [Line Items]                                  
Loss on induced conversion         (3,109) (3,312) (4,651) $ (7,625) (4,169) (7,963) (4,169) (11,072) (11,794)   (19,896)    
Adjustments                                  
Debt Instrument [Line Items]                                  
Loss on induced conversion         $ (8,957) $ (3,473) (13,879) $ 7,625 $ (2,555) $ (17,352) $ (2,555) $ (26,309) $ 5,070   (19,235)    
Long-term Convertible Note - November 2020 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%                                
Conversion price per share $ 10.00                                
Number of days of notice to be given for conversion of notes into common stock 5 days                                
Loss on extinguishment of convertible notes                           4,700 6,400 $ 0  
Amortization of issuance discount and costs                           98      
Long-term Convertible Note - November 2020 Note | Adjustments                                  
Debt Instrument [Line Items]                                  
Loss on induced conversion                           $ (13,900) (2,000)    
June 2021 Partitioned Notes                                  
Debt Instrument [Line Items]                                  
Convertible note, aggregate principal       $ 6,000                          
Shares issued on debt conversion       4.2                          
Monthly redemption amount deferred       $ 1,500                          
July 2021 Partitioned Notes                                  
Debt Instrument [Line Items]                                  
Convertible note, aggregate principal     $ 4,000                            
Shares reserved     3.2                            
Monthly redemption amount deferred     $ 3,500                            
August 2021 Partitioned Notes                                  
Debt Instrument [Line Items]                                  
Convertible note, aggregate principal   $ 4,900         $ 4,900                    
Shares reserved   4.4         4.4                    
Monthly redemption amount deferred   $ 2,600                              
Long-term Convertible Note-July 2020 Note | Adjustments                                  
Debt Instrument [Line Items]                                  
Loss on induced conversion                             $ (14,100)