Income Taxes - Summary of Net Deferred Tax Asset (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Allowance for credit losses	$ 21,198	$ 17,837
Stock based compensation plans	1,506	1,446
Purchase accounting fair market value adjustments	1,111	1,487
Non-accrued interest	470	504
Deferred compensation	3,371	2,796
Loss on equity securities	511	136
Federal net operating loss carryforward	3,264	303
State tax net operating loss carryforward	1,017	0
Unrealized loss on investment securities	26,756	0
Other, net	531	514
Gross deferred tax assets	59,735	25,023
Deferred tax liabilities:
Core deposit intangible from acquired companies	2,595	705
Undistributed income from subsidiary not consolidated for tax return purposes (REIT)	1,097	903
Deferred loan costs	3,496	2,150
Depreciation and amortization	690	1,660
Prepaid expenses	970	824
Unrealized gain on investment securities	0	1,228
Other	1,108	235
Gross deferred tax liabilities	9,956	7,705
Net deferred tax assets	$ 49,779	$ 17,318