Parent Company Only Condensed Financial Information - Schedule of Condensed Statements of Operations and Comprehensive Income (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Income:
Interest income		$ 158,724	$ 65,198
Expenses:
Other noninterest expenses		6,377	2,644
Income before income tax (benefit) expense		33,595	(15,329)
Income tax benefit		7,386	(3,361)
NET INCOME (LOSS)	$ (11,712)	26,209	(11,968)
Comprehensive income (loss)		24,873	(8,772)
Parent Company [Member]
Income:
Interest income		0	0
Dividend income from subsidiaries		3,900	0
Other income		86	0
Expenses:
Interest expense		3,869	1,926
Other noninterest expenses		1,245	5,135
Income before income tax (benefit) expense		(1,128)	(7,061)
Income tax benefit		(1,056)	(1,128)
Net income (loss), including portion attributable to noncontrolling interest, total		(72)	(5,933)
Equity in undistributed subsidiary (loss) income		26,281	(6,035)
NET INCOME (LOSS)		26,209	(11,968)
Comprehensive income (loss)		$ 24,873	$ (8,772)