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Fair Value Measurements - Schedule of Recorded Amount of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | $ 1,445,034 | $ 1,506,388
Total liabilities measured at fair value on a recurring basis | 33,646 |
U. S. agency securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 639,326 | 671,397
Residential mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 698,550 | 727,353
Commercial mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 48,938 | 49,564
Municipal bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 8,306 | 8,490
Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 1,681 | 1,683
Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets measured at fair value on a recurring basis | 1,479,181 | 1,537,053
Total liabilities measured at fair value on a recurring basis |  | 30,555
Recurring | Interest rate product |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset | 34,147 | 30,662
Derivative liability | 33,646 | 30,555
Recurring | U.S treasury bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 48,233 | 47,901
Recurring | U. S. agency securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 639,326 | 671,397
Recurring | Residential mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 698,550 | 727,353
Recurring | Commercial mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 48,938 | 49,564
Recurring | Municipal bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 8,306 | 8,490
Recurring | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 1,681 | 1,683
Recurring | Credit Risk Participation Agreements | Derivative Financial Instruments, Assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset |  | 3
​Quoted Prices (Level 1) | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets measured at fair value on a recurring basis | 0 | 0
Total liabilities measured at fair value on a recurring basis | 0 | 0
​Quoted Prices (Level 1) | Recurring | Interest rate product |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset | 0 | 0
Derivative liability | 0 | 0
​Quoted Prices (Level 1) | Recurring | U.S treasury bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | U. S. agency securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | Residential mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | Commercial mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | Municipal bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
​Quoted Prices (Level 1) | Recurring | Credit Risk Participation Agreements | Derivative Financial Instruments, Assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset |  | 0
Significant Other Observable Inputs (Level 2) | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets measured at fair value on a recurring basis | 1,479,181 | 1,537,053
Total liabilities measured at fair value on a recurring basis | 33,646 | 30,555
Significant Other Observable Inputs (Level 2) | Recurring | Interest rate product |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset | 34,147 | 30,662
Derivative liability | 33,646 | 30,555
Significant Other Observable Inputs (Level 2) | Recurring | U.S treasury bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 48,233 | 47,901
Significant Other Observable Inputs (Level 2) | Recurring | U. S. agency securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 639,326 | 671,397
Significant Other Observable Inputs (Level 2) | Recurring | Residential mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 698,550 | 727,353
Significant Other Observable Inputs (Level 2) | Recurring | Commercial mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 48,938 | 49,564
Significant Other Observable Inputs (Level 2) | Recurring | Municipal bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 8,306 | 8,490
Significant Other Observable Inputs (Level 2) | Recurring | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 1,681 | 1,683
Significant Other Observable Inputs (Level 2) | Recurring | Credit Risk Participation Agreements | Derivative Financial Instruments, Assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset |  | 3
Significant Other Unobservable Inputs (Level 3) | Recurring |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Total assets measured at fair value on a recurring basis | 0 | 0
Total liabilities measured at fair value on a recurring basis | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Interest rate product |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset | 0 | 0
Derivative liability | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | U.S treasury bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | U. S. agency securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Residential mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Commercial mortgage-backed securities |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Municipal bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Corporate bonds |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Investment securities available-for-sale | $ 0 | 0
Significant Other Unobservable Inputs (Level 3) | Recurring | Credit Risk Participation Agreements | Derivative Financial Instruments, Assets |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Derivative asset |  | $ 0

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