Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Jan. 01, 2023	Dec. 31, 2022
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses	$ 34,196		$ 28,511
Allowance for credit losses	4,300
Unfunded loan commitments	3,400	$ 3,400
Increase in deferred tax assets	1,600
Discount from loans to allowance for credit losses		1,700
Decrease to Retained Earnings	161,110		156,492
Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Decrease to Retained Earnings	$ (6,100)	6,100
Consumer Loan [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Period past due for accrued interest receivable	90 days
ASU 2016-13 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2023
Unfunded loan commitments		3,386
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses			$ 897
ASU 2016-13 [Member] | PCD Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Allowance for credit losses		$ 1,668
ASU 2017-04 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2023
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true
ASU 2022-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]	true
Change in Accounting Principle, Accounting Standards Update, Adoption Date	Jan. 01, 2023
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	true