Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Tax basis of loans in excess of financial statement basis	$ 15,607	$ 19,193
Recognized for financial reporting purposes but not yet for tax purposes: Deferred compensation	2,933	2,479
Other deferred tax assets	831	746
Total deferred tax assets	19,371	22,418
Deferred tax liabilities:
Financial statement basis of fixed assets in excess of tax basis	6,178	5,712
Intangible asset amortization deductible for tax purposes, but not for financial reporting purposes	13,594	13,400
Recognized for financial reporting purposes but not yet for tax purposes - accretion on investment securities	499	698
Net unrealized gain on investment securities available-for- sale	26,384	45,295
Other deferred tax liabilities	69	46
Total deferred tax liabilities	46,724	65,151
Net deferred tax asset (liability)	$ (27,353)	$ (42,733)