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Income Taxes - Summary of Net Deferred Tax Asset Reported in Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Unrealized net losses on securities	$ 10,191	$ 15,473
Provision for credit losses	23,598	22,782
Write-downs of other real estate owned		2,522
Deferred compensation	2,947	2,116
Stock-based compensation	2,178	2,199
Investments in partnership interests	8,319	7,260
Other	1,284	911
Gross deferred tax assets	48,517	53,263
Intangibles	(4,929)	(5,639)
Basis difference related to tax credits	(6,806)	(5,462)
Depreciation	(19,406)	(21,833)
Prepaid expense deducted	(1,243)	(1,243)
Other	(308)	(181)
Gross deferred tax liabilities	(32,692)	(34,358)
Net deferred tax asset	$ 15,825	$ 18,905

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