Quarterly report pursuant to Section 13 or 15(d)

Equity Awards - Stock Options and Other Equity Awards (Details)

v3.22.2.2
Equity Awards - Stock Options and Other Equity Awards (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Apr. 30, 2022
Aug. 31, 2022
Aug. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from stock option exercises [1]     $ 189
Options outstanding, nonvested   5,300,000  
Stock-based compensation   $ 1,341 $ 2,597 [1]
Warrant exercises (in shares)   500,000  
Shares issued during the period new issues shares   4,600,000  
Common Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock issued for bonuses and tendered for income tax (in shares)     1,014,000
Warrant exercises (in shares)   657,000 668,000
Stock option exercises (in shares)     300,000
Executives      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percent of salary in lieu of cash, net of payroll deductions and withholding taxes 25.00%    
Shares issued   235,676  
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options term   10 years  
Stock option granted, Shares   200,000  
Award vesting period   4 years  
Stock Options | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option granted, exercise price   $ 0.67  
Stock options grant date fair value   0.54  
Stock Options | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option granted, exercise price   0.41  
Stock options grant date fair value   $ 0.33  
[1] See Note 2, Summary of Significant Accounting Policies.