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Fair Value - Summary of Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | $ 381,536 | $ 373,532 | [1]
Total securities available for sale | 381,536 | 373,532 |
Mortgage derivative asset | 937 | 1,876 | [1]
Mortgage derivative liability | 30 | 75 |
State and Municipal [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 53,552 | 51,113 |
U.S. Treasury and Agencies [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 62,823 | 64,066 |
Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 42,459 | 39,243 |
Level 1 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale |  | 3,000 |
Level 2 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 363,743 | 351,552 |
Level 3 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 17,793 | 18,980 |
Fair Value, Recurring [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 381,536 | 373,532 |
MSR assets | 29,265 |  |
Rabbi trust assets | 829 | 994 |
Mortgage derivative asset | 937 | 1,876 |
Interest rate swap asset |  | 199 |
Mortgage derivative liability | 30 | 75 |
Interest rate swap liability |  | 199 |
Fair Value, Recurring [Member] | State and Municipal [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 53,552 | 51,113 |
Fair Value, Recurring [Member] | U.S. Treasury and Agencies [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 62,823 | 64,066 |
Fair Value, Recurring [Member] | Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 222,702 | 219,110 |
Fair Value, Recurring [Member] | Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 42,459 | 39,243 |
Fair Value, Recurring [Member] | Level 1 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale |  | 3,000 |
Rabbi trust assets | 829 | 994 |
Fair Value, Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale |  | 3,000 |
Fair Value, Recurring [Member] | Level 2 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 363,743 | 351,552 |
Mortgage derivative asset | 937 | 1,876 |
Interest rate swap asset |  | 199 |
Mortgage derivative liability | 30 | 75 |
Interest rate swap liability |  | 199 |
Fair Value, Recurring [Member] | Level 2 [Member] | State and Municipal [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 53,552 | 51,113 |
Fair Value, Recurring [Member] | Level 2 [Member] | U.S. Treasury and Agencies [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 62,823 | 64,066 |
Fair Value, Recurring [Member] | Level 2 [Member] | Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 214,960 | 211,194 |
Fair Value, Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 32,408 | 25,179 |
Fair Value, Recurring [Member] | Level 3 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 17,793 | 18,980 |
MSR assets | 29,265 |  |
Fair Value, Recurring [Member] | Level 3 [Member] | Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 7,742 | 7,916 |
Fair Value, Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | $ 10,051 | $ 11,064 |
[1] | Derived from audited December 31, 2021 Consolidated Financial Statements.

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