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Fair Value of Assets and Liabilities - Balances of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Available-for-Sale: Fair Value | $ 2,408,933 | $ 2,844,823
Loans Held for Sale | 3,124 | 1,035
Derivatives | 95,069 | 47,717
Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 63,806 | 95,265
Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,476 | 48,628
Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 657,701 | 794,658
Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 629,327 | 732,828
Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 709,127 | 793,871
Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 134,923 | 145,667
Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,473,377 | 1,672,366
Fair Value, Measurements, Recurring |  |
Assets: |  |
Available-for-Sale: Fair Value | 2,408,933 | 2,844,823
Loans Held for Sale | 3,124 | 1,035
Mortgage Servicing Rights | 678 | 717
Other Assets | 13,448 | 47,755
Derivatives | 95,069 | 47,717
Total Assets Measured at Fair Value on a Recurring Basis | 2,521,252 | 2,942,047
Liabilities: |  |
Derivatives | $ 143,857 | $ 168,037
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 143,857 | $ 168,037
Fair Value, Measurements, Recurring | Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 212,573 | 233,906
Fair Value, Measurements, Recurring | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 63,806 | 95,265
Fair Value, Measurements, Recurring | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,476 | 48,628
Fair Value, Measurements, Recurring | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 657,701 | 794,658
Fair Value, Measurements, Recurring | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 629,327 | 732,828
Fair Value, Measurements, Recurring | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 709,127 | 793,871
Fair Value, Measurements, Recurring | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 134,923 | 145,667
Fair Value, Measurements, Recurring | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,473,377 | 1,672,366
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) |  |
Assets: |  |
Available-for-Sale: Fair Value | 146,214 | 141,944
Loans Held for Sale | 0 | 0
Mortgage Servicing Rights | 0 | 0
Other Assets | 13,448 | 47,755
Derivatives | 0 | 0
Total Assets Measured at Fair Value on a Recurring Basis | 159,662 | 189,699
Liabilities: |  |
Derivatives | $ 0 | $ 0
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 0 | $ 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 146,214 | 141,944
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) |  |
Assets: |  |
Available-for-Sale: Fair Value | 2,262,719 | 2,702,879
Loans Held for Sale | 3,124 | 1,035
Mortgage Servicing Rights | 0 | 0
Other Assets | 0 | 0
Derivatives | 94,921 | 1,822
Total Assets Measured at Fair Value on a Recurring Basis | 2,360,764 | 2,705,736
Liabilities: |  |
Derivatives | $ 143,857 | $ 70
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 143,857 | $ 70
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 66,359 | 91,962
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 63,806 | 95,265
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,476 | 48,628
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 657,701 | 794,658
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 629,327 | 732,828
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 709,127 | 793,871
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 134,923 | 145,667
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,473,377 | 1,672,366
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Loans Held for Sale | 0 | 0
Mortgage Servicing Rights | 678 | 717
Other Assets | 0 | 0
Derivatives | 148 | 45,895
Total Assets Measured at Fair Value on a Recurring Basis | 826 | 46,612
Liabilities: |  |
Derivatives | $ 0 | $ 167,967
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 0 | $ 167,967
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 0 | 0
Fair Value, Measurements, Recurring | Significant Other Unobservable Inputs (Level 3) | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | $ 0 | $ 0

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