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Fair Value - Summary of Financial Assets Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
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Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | $ 351,990 | $ 354,341 | [1]
Total securities available for sale | 351,990 | 354,341 |
Mortgage derivative asset | 455,000 | 112 |
Mortgage derivative liability | 57,000 | 24 |
State and Municipal [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 51,661 | 50,993 |
U.S. Treasury and Agencies [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 62,153 | 67,162 |
Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 38,857 | 39,850 |
Level 2 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 340,187 | 342,435 |
Level 3 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 11,803 | 11,906 |
Fair Value, Recurring [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 351,990 | 354,341 |
MSR assets | 27,095 | 28,991 |
Rabbi trust assets | 577 | 584 |
Mortgage derivative asset | 455 | 112 |
Interest rate swap asset | 57 | 95 |
Mortgage derivative liability | 57 | 24 |
Interest rate swap liability | 57 | 95 |
Fair Value, Recurring [Member] | State and Municipal [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 51,662 | 50,993 |
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 | 62,152 | 67,162 |
Fair Value, Recurring [Member] | Mortgage Backed Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 199,320 | 196,336 |
Fair Value, Recurring [Member] | Corporate Bonds [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Securities available for sale | 38,856 | 39,850 |
Fair Value, Recurring [Member] | Level 1 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Rabbi trust assets | 577 | 584 |
Fair Value, Recurring [Member] | Level 2 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 340,187 | 342,435 |
Mortgage derivative asset | 455 | 112 |
Interest rate swap asset | 57 | 95 |
Mortgage derivative liability | 57 | 24 |
Interest rate swap liability | 57 | 95 |
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 | 51,662 | 50,993 |
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 | 62,152 | 67,162 |
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 | 191,816 | 188,719 |
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 | 34,557 | 35,561 |
Fair Value, Recurring [Member] | Level 3 [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Total securities available for sale | 11,803 | 11,906 |
MSR assets | 27,095 | 28,991 |
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 | 7,504 | 7,617 |
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 | $ 4,299 | $ 4,289 |
[1] | Derived from audited December 31, 2022 Consolidated Financial Statements.

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