Annual report pursuant to Section 13 and 15(d)

Convertible Instruments and Accrued Interest - Long-term Convertible Note - April 2, 2021 Note (Detail)

v3.22.2.2
Convertible Instruments and Accrued Interest - Long-term Convertible Note - April 2, 2021 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
Oct. 21, 2021
Apr. 02, 2021
Sep. 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
Feb. 18, 2022
Jan. 19, 2022
Dec. 29, 2021
Nov. 16, 2021
Debt Instrument [Line Items]                                      
Net Proceeds                           $ 100,000 $ 15,000        
Unamortized discount   $ 3,400                                  
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        
Net carrying value of note                         42,215 64,754          
Loss on induced conversion       $ (12,066) $ (6,785) $ (18,530)   $ (6,724) $ (25,315) $ (6,724) $ (37,381) $ (6,724) (37,381) (39,131)          
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 - April 2, 2021 Note                                      
Debt Instrument [Line Items]                                      
Debt instrument term   2 years                                  
Convertible note, aggregate principal   $ 28,500                                  
Net Proceeds   25,000                                  
Debt issuance costs   100                                  
Conversion of principal and interest of convertible notes to common stock   $ 3,500                                  
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                                  
Specified monthly redemption amount   $ 7,500                                  
Debt instrument prepayment percentage premium   15.00%                                  
Number of days of notice to be given for prepayment   15 days                                  
Period in which company was obligated to reduce the outstanding balance of debt   5 months                                  
Debt proceeds requiring investor consent   $ 50,000                                  
Additional debt, increase in interest rate   5.00%                                  
Beneficial conversion feature   $ 0                                  
Amortization of issuance discount and costs                         1,197            
Net carrying value of note                         11,906 25,715          
Monthly redemption amount deferred     $ 7,500                                
Loss on extinguishment of convertible notes                         6,400 $ 0 $ 0        
Long-term Convertible Note - April 2, 2021 Note | Maximum                                      
Debt Instrument [Line Items]                                      
Convertible notes, interest rate   22.00%                                  
Long-term Convertible Note - April 2, 2021 Note | Adjustments                                      
Debt Instrument [Line Items]                                      
Loss on induced conversion                         $ (12,400)            
October 2021 Partitioned Notes Of April 2021 Notes [Member]                                      
Debt Instrument [Line Items]                                      
Convertible note, aggregate principal $ 5,000                                    
Shares reserved 3.9                                    
Specified monthly redemption amount $ 2,500                                    
November 2021 Partitioned Notes Of April 2021 Notes [Member]                                      
Debt Instrument [Line Items]                                      
Convertible note, aggregate principal                                     $ 4,000
Shares reserved                                     4.2
December 2021 Partitioned Notes Of April 2021 Notes [Member]                                      
Debt Instrument [Line Items]                                      
Convertible note, aggregate principal                                   $ 4,000  
Shares reserved                                   4.8  
January 2022 Partitioned Notes Of April 2021 Notes [Member]                                      
Debt Instrument [Line Items]                                      
Convertible note, aggregate principal                                 $ 2,500    
Shares reserved                                 5.4    
February 2022 Partitioned Notes Of April 2021 Notes [Member]                                      
Debt Instrument [Line Items]                                      
Convertible note, aggregate principal                               $ 3,200      
Shares reserved                               7.0