Fair Value Disclosures - Schedule of Gain Loss on Sale of Mortgage Loans (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Scheduleofgainlossonsaleofmortgageloans [Abstract]
Realized gain on sale and fees on mortgage loans*	[1]	$ 12,116	$ 20,357	$ 37,091
Change in fair value on loans held-for-sale and IRLCs		147	(1,554)	(5,259)
Change in forward mortgage-backed securities trades		(373)	232	1,413
Total gain on sale of mortgage loans		$ 11,890	$ 19,035	$ 33,245

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