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Share-based Compensation - Additional Information (Detail)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2022
USD ($)
shares
Mar. 31, 2022
USD ($)
shares
May 31, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense related to unvested stock options | $ $ 9.5 $ 9.5  
Expected weighted average period for recognition of compensation expense   1 year 8 months 12 days  
Employee Stock Option | Directors      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation arrangement by share-based payment award, award vesting period   12 months  
Share-based compensation arrangement by share-based payment award, expiration period   10 years  
Employee Stock Option | Employees      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock option vested percentage   25.00%  
Share-based compensation arrangement by share-based payment award, award vesting period   36 months  
Share-based compensation arrangement by share-based payment award, expiration period   10 years  
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation expense related to unvested stock options | $ $ 0.1 $ 0.1  
Expected weighted average period for recognition of compensation expense   3 months  
Number of common stock to be received for each RSUs 1 1  
Vested   (130,000)  
Common stock issued   63,855,000  
Shares withheld for tax withholding 66,145,000    
Number of shares for each unit of restricted stock 1.25 1.25  
2008 Omnibus Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock authorized 29,014,794,000 29,014,794,000  
Shares available for future grant 8,347,062 8,347,062  
Inducement Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock authorized     2,500,000,000
Shares available for future grant 243,000,000 243,000,000