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Stockholders' Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 01, 2024
Mar. 01, 2023
Feb. 28, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Shareholders Equity [Line Items]                
Payment of regular quarterly dividend           $ 49,800,000 $ 41,500,000  
Regular quarterly dividends paid per share           $ 0.9 $ 0.86  
Shares issued pursuant to dividend reinvestment, shares           1,089 817  
Shares issued pursuant to dividend reinvestment, value       $ 15,000 $ 13,000 $ 30,000 $ 28,000  
Proceeds from issuance of common stock under the dividend reinvestment plan           30,000 28,000  
Stock based compensation expense           2,900,000 $ 2,700,000  
Common Stock [Member]                
Shareholders Equity [Line Items]                
Shares issued pursuant to dividend reinvestment, shares         1,000   1,000  
February 2023 Forward Offering [Member]                
Shareholders Equity [Line Items]                
Proceeds from issuance of common stock, net               $ 112,100,000
Number of shares settled under forward provisions               3,450,000
Follow-on Public Offering [Member] | February 2023 Forward Offering [Member] | Common Stock [Member]                
Shareholders Equity [Line Items]                
Shares issued pursuant to Offering/Program net, shares     3,450,000          
ATM Program [Member]                
Shareholders Equity [Line Items]                
Proceeds from issuance of common stock, net       $ 7,200,000 $ 31,200,000 $ 7,200,000 $ 114,100,000  
Number of shares allowed for sale under forward provisions       400,000   400,000    
Remaining number of shares subject to forward sale agreements         0   0  
Sale of common stock average gross offering price per share       $ 27.98   $ 27.98    
Number of shares settled under forward provisions       200,000 1,000,000 200,000 3,700,000  
ATM Program [Member] | Common Stock [Member]                
Shareholders Equity [Line Items]                
Shares issued pursuant to Offering/Program net, shares       218,000 1,007,000 218,000 3,721,000  
Number of shares allowed for sale under forward provisions           1,200,000    
Sale of common stock average gross offering price per share       $ 29.03   $ 29.03    
ATM Program [Member] | Maximum [Member]                
Shareholders Equity [Line Items]                
Aggregate sales price     $ 350,000,000          
ATM Direct Issuances [Member] | Common Stock [Member]                
Shareholders Equity [Line Items]                
Shares issued pursuant to Offering/Program net, shares       0 0 0 0  
Amended and Restated 2004 Omnibus Incentive Compensation Plan [Member] | Restricted Stock Units [Member]                
Shareholders Equity [Line Items]                
Granted, Number of RSUs Outstanding 271,250 253,075