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Fair Value Measurements - Recurring (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Assets: |  |
Securities available-for-sale | $ 1,335,622 | $ 1,539,359
Mortgage servicing rights | 11,041 | 11,189
U.S. Treasury |  |
Assets: |  |
Securities available-for-sale | 214,613 | 212,129
U.S. government agencies |  |
Assets: |  |
Securities available-for-sale | 55,981 | 56,048
States and political subdivisions |  |
Assets: |  |
Securities available-for-sale | 229,534 | 226,128
Corporate bonds |  |
Assets: |  |
Securities available-for-sale | 4,882 | 9,622
Collateralized mortgage obligations |  |
Assets: |  |
Securities available-for-sale | 407,495 | 533,768
Asset-backed Securities |  |
Assets: |  |
Securities available-for-sale | 134,319 | 201,928
Collateralized loan obligations. |  |
Assets: |  |
Securities available-for-sale | 173,658 | 174,746
Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Securities available-for-sale | 214,613 | 212,129
Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Securities available-for-sale | 1,106,071 | 1,291,219
Loans held-for-sale | 1,218 | 491
Other assets | 6,452 | 6,391
Liabilities: |  |
Other liabilities | 13,740 | 12,264
Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Securities available-for-sale | 14,938 | 36,011
Mortgage servicing rights | 11,041 | 11,189
Fair Value, Measurements, Recurring [Member] |  |
Assets: |  |
Loans held-for-sale | 1,218 | 491
Mortgage servicing rights | 11,041 | 11,189
Total financial assets | 1,354,518 | 1,557,631
Liabilities: |  |
Total | 13,740 | 12,265
Fair Value, Measurements, Recurring [Member] | Interest rate swap agreements, including risk participation agreement |  |
Assets: |  |
Other assets | 6,560 | 6,516
Liabilities: |  |
Other liabilities | 13,740 | 12,265
Fair Value, Measurements, Recurring [Member] | Forward Contracts [Member] |  |
Assets: |  |
Other assets | 77 | 76
Fair Value, Measurements, Recurring [Member] | U.S. Treasury |  |
Assets: |  |
Securities available-for-sale | 214,613 | 212,129
Fair Value, Measurements, Recurring [Member] | U.S. government agencies |  |
Assets: |  |
Securities available-for-sale | 55,981 | 56,048
Fair Value, Measurements, Recurring [Member] | Mortgage Backed Securities, Issued by US Government Agencies |  |
Assets: |  |
Securities available-for-sale | 115,140 | 124,990
Fair Value, Measurements, Recurring [Member] | States and political subdivisions |  |
Assets: |  |
Securities available-for-sale | 229,534 | 226,128
Fair Value, Measurements, Recurring [Member] | Corporate bonds |  |
Assets: |  |
Securities available-for-sale | 4,882 | 9,622
Fair Value, Measurements, Recurring [Member] | Collateralized mortgage obligations |  |
Assets: |  |
Securities available-for-sale | 407,495 | 533,768
Fair Value, Measurements, Recurring [Member] | Asset-backed Securities |  |
Assets: |  |
Securities available-for-sale | 134,319 | 201,928
Fair Value, Measurements, Recurring [Member] | Collateralized loan obligations. |  |
Assets: |  |
Securities available-for-sale | 173,658 | 174,746
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Assets: |  |
Total financial assets | 214,613 | 212,129
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | U.S. Treasury |  |
Assets: |  |
Securities available-for-sale | 214,613 | 212,129
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Assets: |  |
Loans held-for-sale | 1,218 | 491
Total financial assets | 1,113,926 | 1,298,302
Liabilities: |  |
Total | 13,740 | 12,265
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest rate swap agreements, including risk participation agreement |  |
Assets: |  |
Other assets | 6,560 | 6,516
Liabilities: |  |
Other liabilities | 13,740 | 12,265
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Forward Contracts [Member] |  |
Assets: |  |
Other assets | 77 | 76
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | U.S. government agencies |  |
Assets: |  |
Securities available-for-sale | 55,981 | 56,048
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities, Issued by US Government Agencies |  |
Assets: |  |
Securities available-for-sale | 115,140 | 124,990
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and political subdivisions |  |
Assets: |  |
Securities available-for-sale | 214,596 | 211,899
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate bonds |  |
Assets: |  |
Securities available-for-sale | 4,882 | 9,622
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized mortgage obligations |  |
Assets: |  |
Securities available-for-sale | 407,495 | 526,998
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Asset-backed Securities |  |
Assets: |  |
Securities available-for-sale | 134,319 | 186,916
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized loan obligations. |  |
Assets: |  |
Securities available-for-sale | 173,658 | 174,746
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Assets: |  |
Mortgage servicing rights | 11,041 | 11,189
Total financial assets | 25,979 | 47,200
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | States and political subdivisions |  |
Assets: |  |
Securities available-for-sale | $ 14,938 | 14,229
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized mortgage obligations |  |
Assets: |  |
Securities available-for-sale |  | 6,770
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities |  |
Assets: |  |
Securities available-for-sale |  | $ 15,012

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