Fair Value Disclosures - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 01, 2021
Assets:
Securities, available-for-sale, fair value	$ 351,553	$ 350,256
Investments in equity securities	3,293	2,579
Fair Value Measured on Recurring Basis [Member]
Assets:
Securities, available-for-sale, fair value	351,553	350,256
Investments in equity securities	3,293	2,579
Total assets	367,200	358,020
Liabilities:
Total liabilities	7,616	10,772
Fair Value Measured on Recurring Basis [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	1,224	1,765	$ 1,600
Fair Value Measured on Recurring Basis [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	5,779	8,647
Fair Value Measured on Recurring Basis [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	186	360
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	427
Fair Value Measured on Recurring Basis [Member] | State and Political Subdivisions [Member]
Assets:
Securities, available-for-sale, fair value	2,301	2,285
Fair Value Measured on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Securities, available-for-sale, fair value	264,552	263,388
Fair Value Measured on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Securities, available-for-sale, fair value	2,001	2,322
Fair Value Measured on Recurring Basis [Member] | Corporate Bonds [Member]
Assets:
Securities, available-for-sale, fair value	82,699	82,261
Fair Value Measured on Recurring Basis [Member] | Equity Securities [Member]
Assets:
Securities, available-for-sale, fair value	764	780
Fair Value Measured on Recurring Basis [Member] | Money Market Mutual Funds [Member]
Assets:
Securities, available-for-sale, fair value	2,529	1,799
Fair Value Measured on Recurring Basis [Member] | Loans Held for Sale
Assets:
Loans held for sale	11,637	5,037
Fair Value Measured on Recurring Basis [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	717	119
Fair Value Measured on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets		29
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Investments in equity securities	3,293	2,579
Total assets	3,293	2,579
Liabilities:
Total liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | State and Political Subdivisions [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Corporate Bonds [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Equity Securities [Member]
Assets:
Securities, available-for-sale, fair value	764	780
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Money Market Mutual Funds [Member]
Assets:
Securities, available-for-sale, fair value	2,529	1,799
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Loans Held for Sale
Assets:
Loans held for sale	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	0	0
Fair Value Measured on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets		0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member]
Assets:
Securities, available-for-sale, fair value	351,553	350,256
Investments in equity securities	0	0
Total assets	363,907	355,441
Liabilities:
Total liabilities	6,206	8,647
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	5,779	8,647
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	427
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | State and Political Subdivisions [Member]
Assets:
Securities, available-for-sale, fair value	2,301	2,285
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Securities, available-for-sale, fair value	264,552	263,388
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Securities, available-for-sale, fair value	2,001	2,322
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Corporate Bonds [Member]
Assets:
Securities, available-for-sale, fair value	82,699	82,261
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Equity Securities [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Money Market Mutual Funds [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Loans Held for Sale
Assets:
Loans held for sale	11,637	5,037
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	717	119
Fair Value Measured on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets		29
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Investments in equity securities	0	0
Total assets	0	0
Liabilities:
Total liabilities	1,410	2,125
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Contingent Consideration Liability [Member]
Liabilities:
Derivative liabilities	1,224	1,765
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Liabilities:
Derivative liabilities	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Credit Risk Contract [Member]
Liabilities:
Derivative liabilities	186	360
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Liabilities:
Derivative liabilities	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | State and Political Subdivisions [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Residential Mortgage-Backed Securities [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Corporate Bonds [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Equity Securities [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Money Market Mutual Funds [Member]
Assets:
Securities, available-for-sale, fair value	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Loans Held for Sale
Assets:
Loans held for sale	0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Locks with Customers [Member]
Assets:
Derivative assets	$ 0	0
Fair Value Measured on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Assets:
Derivative assets		$ 0