Quarterly report pursuant to Section 13 or 15(d)

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

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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 9 Months Ended
Oct. 21, 2021
Oct. 05, 2021
Apr. 02, 2021
Sep. 30, 2021
Feb. 28, 2022
Feb. 28, 2021
Feb. 28, 2022
Feb. 28, 2021
Feb. 18, 2022
Jan. 19, 2022
Dec. 29, 2021
Dec. 07, 2021
Nov. 16, 2021
Nov. 02, 2021
May 31, 2021
Debt Instrument [Line Items]                              
Net Proceeds               $ 50,000              
Amortization of issuance discount and costs             $ 2,452                
Accrued interest on convertible notes         $ 4,857   4,857               $ 2,007
Interest on convertible notes         1,187 $ 1,257 4,299 $ 2,870              
Net carrying value of note         40,504   40,504               64,754
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                        
Unamortized discount     3,400                        
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%                        
Amortization of issuance discount and costs         200   1,045                
Unamortized discount and issuance costs         700   700                
Accrued interest on convertible notes         2,300   2,300                
Interest on convertible notes             1,800                
Net carrying value of note         11,442   11,442               $ 25,715
Monthly redemption amount deferred       $ 7,500                      
Loss on extinguishment of convertible notes         $ 3,100   $ 6,400                
Long-term Convertible Note - April 2, 2021 Note | Maximum                              
Debt Instrument [Line Items]                              
Convertible notes, interest rate     22.00%                        
October 2021 Partitioned Notes Of April 2021 Notes [Member]                              
Debt Instrument [Line Items]                              
Convertible note, aggregate principal $ 5,000 $ 5,000                          
Shares reserved 3.9 3.9                          
Specified monthly redemption amount $ 2,500 $ 2,500                          
November 2021 Partitioned Notes Of April 2021 Notes [Member]                              
Debt Instrument [Line Items]                              
Convertible note, aggregate principal                         $ 4,000 $ 4,000  
Shares reserved                         4.2 4.2  
December 2021 Partitioned Notes Of April 2021 Notes [Member]                              
Debt Instrument [Line Items]                              
Convertible note, aggregate principal                     $ 4,000 $ 4,000      
Shares reserved                     4.8 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