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Stock-Based Compensation - Stock Plans (Detail) - shares
3 Months Ended
Mar. 31, 2024
Sep. 30, 2023
Jun. 18, 2015
2015 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares)     1,203,125
Vesting period 4 years    
Expiration period 10 years    
2015 Omnibus Equity Incentive Plan | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 48 months 7 months  
Exercise period following termination 90 days    
2015 Omnibus Equity Incentive Plan | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 12 months 2 months  
Restricted stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock, granted (in shares) 275,000    
Restricted stock | 2015 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares available for future grants (in shares) 100,000    
Full value awards | 2015 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards settled in shares, adjustments against share reserve (in shares) 1.2    
Partial value awards | 2015 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards settled in shares, adjustments against share reserve (in shares) 1.0