Employee Benefits - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2024	Dec. 31, 2023	Oct. 01, 2021
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plan accumulated liability		$ 1,500,000	$ 1,300,000
Deferred compensation cost noninterest expense		183,000	91,000
Deferred compensation plans benefit payments		$ 208,000	214,000
Employee stock purchase plan, shares		423,000
Deferred compensation common stock shares reserved for issuance Employee stock purchase plan		475,000
Deferred compensation plan percentage of lower of fair market value of shares Employee stock purchase plan		95.00%
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation plan value of shares limit to purchase Employee stock purchase plan		$ 25,000,000
Deferred compensation plan percentage of purchase limit of annual salary Employee stock purchase plan		10.00%
401(k) Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of employee contribution match to vested				50.00%
Employee's contribution, percentage	6.00%
Contribution expense		$ 693,000	344,000
Defined Contribution Plan, Description		Effective October 1, 2021, the Company matches 50 percent of the first 6 percent of the employee's contribution, and this match is immediately vested.
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Contribution expense		$ 634,000	653,000
Deferred compensation plan accumulated liability		$ 2,500	$ 2,000