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Stockholders' Equity - Additional Information (Detail) - USD ($)			1 Months Ended				3 Months Ended						6 Months Ended
	Mar. 02, 2026	Mar. 01, 2025	Feb. 28, 2026	Dec. 31, 2025	Jul. 31, 2024	Feb. 28, 2023	Jun. 30, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Jun. 30, 2026	Jun. 30, 2025
Shareholders Equity [Line Items]
Common stock, shares outstanding				59,815,921			61,932,369	59,815,921					61,932,369
Payment of regular quarterly dividend													$ 60,100,000	$ 53,400,000
Regular quarterly dividends paid per share													$ 0.97	$ 0.94
Shares issued pursuant to dividend reinvestment, shares													1,067	1,123
Shares issued pursuant to dividend reinvestment, value							$ 17,000			$ 16,000			$ 33,000	$ 32,000
Proceeds from issuance of common stock under the dividend reinvestment plan													33,000	32,000
Stock based compensation expense													$ 2,700,000	$ 3,400,000
Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued pursuant to Offering/Program net, shares										1,150,000				1,150,000
Shares issued pursuant to dividend reinvestment, shares										1,000				1,000
Follow-on Public Offering [Member]
Shareholders Equity [Line Items]
Proceeds from issuance of common stock, net			$ 129,900,000	$ 113,600,000
Number of shares settled under forward provisions				4,000,000									0
Follow-on Public Offering [Member] \| February 2026 Forward Offering [Member] \| Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued pursuant to Offering/Program net, shares			4,000,000
Follow-on Public Offering [Member] \| July 2024 Forward Offering [Member] \| Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued pursuant to Offering/Program net, shares					4,000,000
ATM Program [Member]
Shareholders Equity [Line Items]
Proceeds from issuance of common stock, net								$ 12,242,000	$ 27,548,000		$ 19,922,000	$ 10,942,000	$ 59,712,000	$ 10,942,000
Number of shares settled under forward provisions							1,460,545	441,850	1,018,695		650,000	406,727	2,110,545	406,727
ATM Program [Member] \| Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued pursuant to Offering/Program net, shares							1,461,000						2,111,000	407,000
ATM Program [Member] \| Maximum [Member]
Shareholders Equity [Line Items]
Aggregate sales price						$ 350
ATM Direct Issuances [Member] \| Common Stock [Member]
Shareholders Equity [Line Items]
Shares issued pursuant to Offering/Program net, shares													0	0
At The Market Forward Agreements [Member]
Shareholders Equity [Line Items]
Proceeds from issuance of common stock, net							$ 39,800,000			$ 10,900,000			$ 59,700,000	$ 10,900,000
Number of shares settled under forward provisions										406,727				406,727
Amended and Restated 2004 Omnibus Incentive Compensation Plan [Member] \| Restricted Stock Units [Member]
Shareholders Equity [Line Items]
Granted, Number of RSUs Outstanding	276,225	293,605