v3.26.1
Disclosures About Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets, netting adjustments $ (16,149) $ (13,431)
Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 22,012 25,922
Derivative liabilities 20,780 26,673
Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets, netting adjustments (609) (51)
Derivative liabilities, netting adjustments (58) (1,280)
Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets, netting adjustments (15,540) (13,380)
Derivative liabilities, netting adjustments (2,841) (10,251)
Level 1    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Total financial assets 305,972 289,938
Level 1 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Level 1 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Level 1 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Level 1 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Level 1 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 0 0
Level 2    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 1,829,179 1,586,382
Total financial assets 2,400,934 2,217,616
Level 2 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Level 2 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 78 95
Level 2 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 609 51
Derivative liabilities, before netting 58 1,280
Level 2 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 20,652 25,155
Derivative liabilities, before netting 20,708 25,366
Level 2 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 14 27
Level 3    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Total financial assets 12,644,116 12,441,208
Level 3 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 673 617
Level 3 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Level 3 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Level 3 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Level 3 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 0 0
Recurring    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 199,728 178,261
Total mortgage-backed securities 1,629,451 1,408,121
Derivative assets, netting adjustments (16,149) (13,431)
Total financial assets 1,835,042 1,598,873
Derivative liabilities, netting adjustments (2,899) (11,531)
Total liabilities 17,881 15,142
Recurring | U.S. government and agencies    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 32,640 35,912
Recurring | U.S. government-sponsored enterprises    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities   2,047
Recurring | States and political subdivisions    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 68,030 83,268
Recurring | Corporate    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 99,058 57,034
Recurring | Mortgage-backed securities | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 139,519 96,344
Recurring | Mortgage-backed securities | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 157,715 139,786
Recurring | Mortgage-backed securities | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 221,574 167,647
Recurring | Mortgage-backed securities | Non-agency    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 3 3
Recurring | Collateralized mortgage obligations | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 723,889 708,908
Recurring | Collateralized mortgage obligations | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 85,011 97,672
Recurring | Collateralized mortgage obligations | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 301,740 197,761
Recurring | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 673 617
Recurring | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 78 95
Recurring | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Derivative assets, netting adjustments (609) (51)
Derivative liabilities 0 0
Derivative liabilities, netting adjustments (58) (1,280)
Recurring | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 5,112 11,775
Derivative assets, netting adjustments (15,540) (13,380)
Derivative liabilities 17,867 15,115
Derivative liabilities, netting adjustments (2,841) (10,251)
Recurring | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 14 27
Recurring | Level 1    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Total mortgage-backed securities 0 0
Total financial assets 0 0
Total liabilities 0 0
Recurring | Level 1 | U.S. government and agencies    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 1 | U.S. government-sponsored enterprises    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities   0
Recurring | Level 1 | States and political subdivisions    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 1 | Corporate    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 1 | Mortgage-backed securities | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Mortgage-backed securities | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Mortgage-backed securities | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Mortgage-backed securities | Non-agency    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Collateralized mortgage obligations | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Collateralized mortgage obligations | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Collateralized mortgage obligations | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 1 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Recurring | Level 1 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Recurring | Level 1 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Recurring | Level 1 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Recurring | Level 1 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 0 0
Recurring | Level 2    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 199,728 178,261
Total mortgage-backed securities 1,629,451 1,408,121
Total financial assets 1,850,518 1,611,687
Total liabilities 20,780 26,673
Recurring | Level 2 | U.S. government and agencies    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 32,640 35,912
Recurring | Level 2 | U.S. government-sponsored enterprises    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities   2,047
Recurring | Level 2 | States and political subdivisions    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 68,030 83,268
Recurring | Level 2 | Corporate    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 99,058 57,034
Recurring | Level 2 | Mortgage-backed securities | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 139,519 96,344
Recurring | Level 2 | Mortgage-backed securities | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 157,715 139,786
Recurring | Level 2 | Mortgage-backed securities | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 221,574 167,647
Recurring | Level 2 | Mortgage-backed securities | Non-agency    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 3 3
Recurring | Level 2 | Collateralized mortgage obligations | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 723,889 708,908
Recurring | Level 2 | Collateralized mortgage obligations | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 85,011 97,672
Recurring | Level 2 | Collateralized mortgage obligations | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 301,740 197,761
Recurring | Level 2 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Recurring | Level 2 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 78 95
Recurring | Level 2 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 609 51
Derivative liabilities, before netting 58 1,280
Recurring | Level 2 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 20,652 25,155
Derivative liabilities, before netting 20,708 25,366
Recurring | Level 2 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities 14 27
Recurring | Level 3    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Total mortgage-backed securities 0 0
Total financial assets 673 617
Total liabilities 0 0
Recurring | Level 3 | U.S. government and agencies    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 3 | U.S. government-sponsored enterprises    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities   0
Recurring | Level 3 | States and political subdivisions    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 3 | Corporate    
Assets and liabilities measured at fair value on a recurring basis    
Total debt securities 0 0
Recurring | Level 3 | Mortgage-backed securities | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Mortgage-backed securities | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Mortgage-backed securities | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Mortgage-backed securities | Non-agency    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Collateralized mortgage obligations | GNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Collateralized mortgage obligations | FNMA    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Collateralized mortgage obligations | FHLMC    
Assets and liabilities measured at fair value on a recurring basis    
Total mortgage-backed securities 0 0
Recurring | Level 3 | Interest rate lock commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 673 617
Recurring | Level 3 | Forward commitments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative assets 0 0
Recurring | Level 3 | Interest rate swap agreements | Interest rate swaps designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Recurring | Level 3 | Interest rate swap agreements | Interest rate swaps not designated as hedging instruments    
Assets and liabilities measured at fair value on a recurring basis    
Derivative asset before netting 0 0
Derivative liabilities, before netting 0 0
Recurring | Level 3 | Risk participation agreements    
Assets and liabilities measured at fair value on a recurring basis    
Derivative liabilities $ 0 $ 0