Notes Payable - Components of Notes Payable (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Notes payable	$ 590,440	$ 763,000
Unamortized debt issuance cost	(232)	(25)
Notes payable, net	590,208	762,975
Unsecured Revolving Lines of Credit and Term Loan [Member]
Debt Instrument [Line Items]
Notes payable	415,440	588,000
Series E senior notes [Member] | 2.35% Series E senior notes due in 2026 [Member]
Debt Instrument [Line Items]
Notes payable	60,000	60,000
Series D senior notes [Member] | 2.57% Series D senior notes due in 2028 [Member]
Debt Instrument [Line Items]
Notes payable	40,000	40,000
Series F Senior Notes [Member] | 6.25% Series F senior notes due in 2030 [Member]
Debt Instrument [Line Items]
Notes payable	$ 75,000	$ 75,000