v3.26.3
Fair Value Measurements - Recurring (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Assets:    
Securities available-for-sale, at fair value $ 978,576 $ 1,090,523
Mortgage servicing rights 10,690 9,459
U.S. Treasury    
Assets:    
Securities available-for-sale, at fair value 148,073 165,860
U.S. government agencies    
Assets:    
Securities available-for-sale, at fair value 39,109 29,176
States and political subdivisions    
Assets:    
Securities available-for-sale, at fair value 177,272 206,375
Collateralized mortgage obligations    
Assets:    
Securities available-for-sale, at fair value 328,790 359,305
Asset-backed Securities    
Assets:    
Securities available-for-sale, at fair value 37,395 45,816
Collateralized loan obligations.    
Assets:    
Securities available-for-sale, at fair value 172,331 194,464
Equity Securities    
Assets:    
Securities available-for-sale, at fair value 771 747
Fair Value, Inputs, Level 1    
Assets:    
Securities available-for-sale, at fair value 148,073 165,860
Fair Value, Inputs, Level 2    
Assets:    
Securities available-for-sale, at fair value 818,854 912,866
Loans held-for-sale 1,407 3,645
Interest rate derivatives 7,002 4,298
Liabilities:    
Mortgage banking derivatives 2,025 1,143
Fair Value, Inputs, Level 3    
Assets:    
Securities available-for-sale, at fair value 11,649 11,797
Mortgage servicing rights 10,690 9,459
Fair Value, Measurements, Recurring    
Assets:    
Loans held-for-sale 1,407 3,645
Mortgage servicing rights 10,690 9,459
Total financial assets 997,682 1,107,979
Liabilities:    
Total 2,047 1,157
Fair Value, Measurements, Recurring | Interest Rate Products    
Assets:    
Interest rate derivatives 7,009 4,321
Fair Value, Measurements, Recurring | Forward Contracts    
Assets:    
Interest rate derivatives   31
Liabilities:    
Mortgage banking derivatives 20  
Fair Value, Measurements, Recurring | Interest rate swap agreements, including risk participation agreements    
Liabilities:    
Mortgage banking derivatives 2,027 1,157
Fair Value, Measurements, Recurring | U.S. Treasury    
Assets:    
Securities available-for-sale, at fair value 148,073 165,860
Fair Value, Measurements, Recurring | U.S. government agencies    
Assets:    
Securities available-for-sale, at fair value 39,109 29,176
Fair Value, Measurements, Recurring | U.S. government agencies mortgage-backed    
Assets:    
Securities available-for-sale, at fair value 74,835 88,780
Fair Value, Measurements, Recurring | States and political subdivisions    
Assets:    
Securities available-for-sale, at fair value 177,272 206,375
Fair Value, Measurements, Recurring | Collateralized mortgage obligations    
Assets:    
Securities available-for-sale, at fair value 328,790 359,305
Fair Value, Measurements, Recurring | Asset-backed Securities    
Assets:    
Securities available-for-sale, at fair value 37,395 45,816
Fair Value, Measurements, Recurring | Collateralized loan obligations.    
Assets:    
Securities available-for-sale, at fair value 172,331 194,464
Fair Value, Measurements, Recurring | Equity Securities    
Assets:    
Securities available-for-sale, at fair value 771 747
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1    
Assets:    
Total financial assets 148,073 165,860
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. Treasury    
Assets:    
Securities available-for-sale, at fair value 148,073 165,860
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2    
Assets:    
Loans held-for-sale 1,407 3,645
Total financial assets 827,270 920,863
Liabilities:    
Total 2,047 1,157
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest Rate Products    
Assets:    
Interest rate derivatives 7,009 4,321
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Forward Contracts    
Assets:    
Interest rate derivatives   31
Liabilities:    
Mortgage banking derivatives 20  
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Interest rate swap agreements, including risk participation agreements    
Liabilities:    
Mortgage banking derivatives 2,027 1,157
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. government agencies    
Assets:    
Securities available-for-sale, at fair value 39,109 29,176
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. government agencies mortgage-backed    
Assets:    
Securities available-for-sale, at fair value 74,835 88,780
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | States and political subdivisions    
Assets:    
Securities available-for-sale, at fair value 170,770 199,428
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Collateralized mortgage obligations    
Assets:    
Securities available-for-sale, at fair value 328,790 359,305
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Asset-backed Securities    
Assets:    
Securities available-for-sale, at fair value 32,248 40,966
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Collateralized loan obligations.    
Assets:    
Securities available-for-sale, at fair value 172,331 194,464
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Equity Securities    
Assets:    
Securities available-for-sale, at fair value 771 747
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3    
Assets:    
Mortgage servicing rights 10,690 9,459
Total financial assets 22,339 21,256
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | States and political subdivisions    
Assets:    
Securities available-for-sale, at fair value 6,502 6,947
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Asset-backed Securities    
Assets:    
Securities available-for-sale, at fair value $ 5,147 $ 4,850