Fair Value Disclosures - Schedule of Gain Loss on Sale of Mortgage Loans (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Schedule Of Gain Loss On Sale Of Mortgage Loans [Abstract]
Realized gain on sale and fees on mortgage loans	[1]	$ 2,384	$ 2,580
Change in fair value on loans held-for-sale and IRLCs		565	351
Change in forward mortgage-backed securities trades		(117)	197
Total gain on sale of mortgage loans		$ 2,832	$ 3,128

[1] This includes gains on loans held-for-sale carried under the fair value method and lower of cost or market.