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Investments - Summary of Amortized Cost and Fair Values of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Securities available for sale, at fair value | $ 381,536 | $ 373,532 | [1]
Investment securities, Amortized Cost | 429,530 | 378,741 |
Investment securities, Gross Unrealized Gains | 350 | 1,513 |
Investment securities, Gross Unrealized Losses | (48,344) | (6,722) |
Investment securities, Fair Value | 381,536 | 373,532 |
State and Municipal [Member] |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Available for sale, Amortized Cost | 60,899 | 51,341 |
Available for sale, Gross Unrealized Gains | 2 | 302 |
Available for sale, Gross Unrealized Losses | (7,349) | (530) |
Securities available for sale, at fair value | 53,552 | 51,113 |
U.S. Treasury and Agencies [Member] |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Available for sale, Amortized Cost | 72,032 | 65,680 |
Available for sale, Gross Unrealized Losses | (9,209) | (1,614) |
Securities available for sale, at fair value | 62,823 | 64,066 |
Mortgage Backed Securities [Member] |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Available for sale, Amortized Cost | 252,930 | 222,968 |
Available for sale, Gross Unrealized Gains | 76 | 403 |
Available for sale, Gross Unrealized Losses | (30,304) | (4,261) |
Securities available for sale, at fair value | 222,702 | 219,110 |
Corporate Bonds [Member] |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Available for sale, Amortized Cost | 43,669 | 38,752 |
Available for sale, Gross Unrealized Gains | 272 | 808 |
Available for sale, Gross Unrealized Losses | (1,482) | (317) |
Securities available for sale, at fair value | $ 42,459 | $ 39,243 |
[1] | Derived from audited December 31, 2021 Consolidated Financial Statements.

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