Fair Value Measurements - Schedule of Recorded Amount of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	$ 1,420,618	$ 1,506,388
U. S. agency securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	640,967	671,397
Residential mortgage-backed securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	672,206	727,353
Commercial mortgage-backed securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	48,847	49,564
Municipal bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	8,182	8,490
Corporate bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	1,695	1,683
Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for sale	5,000
Total assets measured at fair value on a recurring basis	1,460,388	1,537,053
Total liabilities measured at fair value on a recurring basis	33,633	30,555
Recurring | Interest rate product
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset	34,770	30,662
Derivative liability	33,633	30,555
Recurring | U.S treasury bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	48,721	47,901
Recurring | U. S. agency securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	640,967	671,397
Recurring | Residential mortgage-backed securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	672,206	727,353
Recurring | Commercial mortgage-backed securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	48,847	49,564
Recurring | Municipal bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	8,182	8,490
Recurring | Corporate bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Investment securities available-for-sale	1,695	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]
Loans held for sale	0
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]
Loans held for sale	5,000
Total assets measured at fair value on a recurring basis	1,460,388	1,537,053
Total liabilities measured at fair value on a recurring basis	33,633	30,555
Significant Other Observable Inputs (Level 2) | Recurring | Interest rate product
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Derivative asset	34,770	30,662
Derivative liability	33,633	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	48,721	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	640,967	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	672,206	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	48,847	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	8,182	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	1,695	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]
Loans held for sale	0
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