Quarterly report pursuant to Section 13 or 15(d)

Stock Based Compensation - Additional Information (Details)

v3.21.4
Stock Based Compensation - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Aug. 31, 2021
Jul. 01, 2021
Jun. 04, 2021
Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares of common stock issuable (in shares)       3,000,000 3,000,000 250,000
Common stock, par or stated value per share (in dollars per share) $ 0.0001   $ 0.0001   $ 0.0001  
Share-based compensation arrangement by share-based payment award, expiration period 10 years          
Compensation expense $ 408 $ 496        
Share-based payment arrangement, noncash expense 408 421        
Share-based compensation arrangement by share-based payment award, options, outstanding, intrinsic value $ 0          
Share-based payment arrangement, nonvested award, cost not yet recognized, period for recognition 2 years 9 months 7 days          
Share-based payment arrangement, nonvested award, cost not yet recognized, amount $ 3,785          
Board of Directors            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based payment arrangement, noncash expense $ 56 $ 75        
Options Granted on or After July 1, 2020            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period 4 years          
Share-based payment arrangement, tranche one | Granted Prior to July 1, 2020            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage 25.00%          
Share-based compensation arrangement by share-based payment award, award vesting period 12 months          
Share-based payment arrangement, tranche one | Options Granted on or After July 1, 2020            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting rights, percentage 25.00%          
Share-based compensation arrangement by share-based payment award, award vesting period 1 year          
Share-based payment arrangement, tranche two | Granted Prior to July 1, 2020            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation arrangement by share-based payment award, award vesting period 36 months