Loan Servicing Assets - Summary of Mortgage Servicing Rights (Detail) - Mortgage Servicing Assets [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Finite Lived Intangible Assets [Line Items]
Beginning of year servicing rights:	$ 4,931	$ 5,078	$ 3,957
Amounts capitalized	584	1,196	2,710
Amortization	(1,228)	(1,343)	(1,589)
End of year	$ 4,287	$ 4,931	$ 5,078