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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, 2022 | Dec. 31, 2021
--- | --- | ---
Assets: |  |
Available-for-Sale: Fair Value | $ 2,844,823 | $ 4,276,056
Loans Held for Sale | 1,035 | 26,746
Derivatives | 47,717 | 42,011
Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 95,265 | 75,818
Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 48,628 | 1,780
Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 794,658 | 383,113
Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 732,828 | 1,319,042
Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 793,871 | 2,090,326
Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 145,667 | 155,890
Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,672,366 | 3,565,258
Fair Value, Measurements, Recurring |  |
Assets: |  |
Available-for-Sale: Fair Value | 2,844,823 | 4,276,056
Loans Held for Sale | 1,035 | 26,746
Mortgage Servicing Rights | 717 | 800
Other Assets | 47,755 | 56,411
Derivatives | 47,717 | 42,011
Total Assets Measured at Fair Value on a Recurring Basis | 2,942,047 | 4,402,024
Liabilities: |  |
Derivatives | $ 168,037 | $ 18,816
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 168,037 | $ 18,816
Fair Value, Measurements, Recurring | Debt Securities Issued by the U.S. Treasury and Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 233,906 | 250,087
Fair Value, Measurements, Recurring | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 95,265 | 75,818
Fair Value, Measurements, Recurring | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 48,628 | 1,780
Fair Value, Measurements, Recurring | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 794,658 | 383,113
Fair Value, Measurements, Recurring | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 732,828 | 1,319,042
Fair Value, Measurements, Recurring | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 793,871 | 2,090,326
Fair Value, Measurements, Recurring | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 145,667 | 155,890
Fair Value, Measurements, Recurring | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,672,366 | 3,565,258
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets or Liabilities (Level 1) |  |
Assets: |  |
Available-for-Sale: Fair Value | 141,944 | 114,845
Loans Held for Sale | 0 | 0
Mortgage Servicing Rights | 0 | 0
Other Assets | 47,755 | 56,411
Derivatives | 0 | 0
Total Assets Measured at Fair Value on a Recurring Basis | 189,699 | 171,256
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 | 141,944 | 114,845
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 | 2,702,879 | 4,161,211
Loans Held for Sale | 1,035 | 26,746
Mortgage Servicing Rights | 0 | 0
Other Assets | 0 | 0
Derivatives | 1,822 | 194
Total Assets Measured at Fair Value on a Recurring Basis | 2,705,736 | 4,188,151
Liabilities: |  |
Derivatives | $ 70 | $ 903
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 70 | $ 903
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 | 91,962 | 135,242
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by States and Political Subdivisions |  |
Assets: |  |
Available-for-Sale: Fair Value | 95,265 | 75,818
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 48,628 | 1,780
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Debt Securities Issued by Corporations |  |
Assets: |  |
Available-for-Sale: Fair Value | 794,658 | 383,113
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - Government Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 732,828 | 1,319,042
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Residential - U.S. Government-Sponsored Enterprises |  |
Assets: |  |
Available-for-Sale: Fair Value | 793,871 | 2,090,326
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Commercial - Government Agencies - Sponsored Agencies |  |
Assets: |  |
Available-for-Sale: Fair Value | 145,667 | 155,890
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2) | Mortgage-Backed Securities |  |
Assets: |  |
Available-for-Sale: Fair Value | 1,672,366 | 3,565,258
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 | 717 | 800
Other Assets | 0 | 0
Derivatives | 45,895 | 41,817
Total Assets Measured at Fair Value on a Recurring Basis | 46,612 | 42,617
Liabilities: |  |
Derivatives | $ 167,967 | $ 17,913
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Other Liabilities | Other Liabilities
Total Liabilities Measured at Fair Value on a Recurring Basis | $ 167,967 | $ 17,913
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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