General form of registration statement for all companies including face-amount certificate companies

Equity Awards and Warrants - Expense and unrecognized (Details)

v3.23.2
Equity Awards and Warrants - Expense and unrecognized (Details) - USD ($)
$ in Thousands, shares in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jul. 31, 2020
Feb. 28, 2023
Feb. 28, 2022
Feb. 28, 2023
Feb. 28, 2022
May 31, 2022
May 31, 2021
Mar. 31, 2023
Aug. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation $ 1,600     $ 3,557 $ 4,219 [1] $ 6,239 $ 10,429    
Common stock warrants to purchase shares               71.1 5.5
Surety Bond Backstop Agreement                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Stock based compensation           $ 6,600      
Common stock warrants to purchase shares           15.0      
General and Administrative Expenses                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Stock based compensation   $ 400 $ (400) $ 3,500 $ 4,200        
Stock Options And Warrants [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Vested during the period, grant date fair value           $ 3,900 4,700    
Unrecognized compensation expense           $ 6,500      
Weighted average period over which unrecognized compensation expense is expected to be recognized           1 year 2 months 4 days      
Equity Instruments | General and Administrative Expenses                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Share-based Compensation           $ 6,200 $ 8,800    
Chief Executive Officer [Member] | Equity Instruments                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Stock based compensation           $ 1,600      
[1] See Note 2, Summary of Significant Accounting PoliciesRevision and Restatement of Financial Statements.