Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan (Detail)

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Stock-Based Compensation Plans - 2013 Omnibus Equity Incentive Plan (Detail) - USD ($)
$ / shares in Units, $ in Millions
Apr. 06, 2023
Mar. 31, 2023
Feb. 09, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock shares available for grant (in shares)   3,466,957  
Semi Annual Regular Dividend      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable amount per share (in dollars per share)     $ 0.25
Unvested Restricted Stock and Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable     $ 10.3
Unvested Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable   $ 12.0  
Unvested Restricted Stock | Subsequent Event      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable $ 2.2    
2013 Omnibus Equity Incentive Plan | Unvested Restricted Stock and Deferred Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable     $ 0.5
2013 Omnibus Equity Incentive Plan | Unvested Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Dividends payable   $ 2.2