Income Taxes - Summary of Net Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Allowance for credit losses	$ 22,422	$ 21,198
Stock based compensation plans	1,706	1,506
Purchase accounting fair market value adjustments	206	1,111
Non-accrued interest	599	470
Deferred compensation	3,426	3,371
Loss on equity securities	462	511
Depreciation and amortization	37	0
Federal net operating loss carryforward	2,065	3,264
State tax net operating loss carryforward	2,701	1,017
Unrealized loss on investment securities	23,135	26,756
Other, net	369	531
Gross deferred tax assets	57,128	59,735
Deferred tax liabilities:
Core deposit intangible from acquired companies	1,984	2,595
Undistributed income from subsidiary not consolidated for tax return purposes (REIT)	1,535	1,097
Deferred loan costs	4,424	3,496
Depreciation and amortization	0	690
Prepaid expenses	906	970
Other	1,104	1,108
Gross deferred tax liabilities	9,953	9,956
Net deferred tax assets	$ 47,175	$ 49,779