Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Loans Held-for-Sale	$ 15,451,000	$ 7,817,000
Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	1,666,930,000	1,657,394,000
Loans Held-for-Sale	15,451,000	7,817,000
Mortgage Servicing Rights	4,533,000	4,544,000
Derivative Assets	3,785,000	4,145,000
Derivative Liabilities	3,868,000	4,212,000
Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	135,411,000	152,090,000
Loans Held-for-Sale	0	0
Mortgage Servicing Rights	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Significant Other Observable Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	1,531,519,000	1,505,304,000
Loans Held-for-Sale	15,451,000	7,817,000
Mortgage Servicing Rights	4,533,000	4,544,000
Derivative Assets	3,785,000	4,145,000
Derivative Liabilities	3,868,000	4,212,000
Significant Unobservable  Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Loans Held-for-Sale	0	0
Mortgage Servicing Rights	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
U.S. Treasury | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	135,411,000	152,090,000
U.S. Treasury | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	135,411,000	152,090,000
U.S. Treasury | Significant Other Observable Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
U.S. Treasury | Significant Unobservable  Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Obligations of State and Political Subdivisions | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	486,535,000	497,606,000
Obligations of State and Political Subdivisions | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Obligations of State and Political Subdivisions | Significant Other Observable Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	486,535,000	497,606,000
Obligations of State and Political Subdivisions | Significant Unobservable  Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
MBS/CMO | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	740,928,000	719,542,000
MBS/CMO | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
MBS/CMO | Significant Other Observable Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	740,928,000	719,542,000
MBS/CMO | Significant Unobservable  Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
US Gov’t Sponsored Entities & Agencies | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	304,056,000	288,156,000
US Gov’t Sponsored Entities & Agencies | Quoted Prices in Active Markets for Identical Assets (Level 1) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
US Gov’t Sponsored Entities & Agencies | Significant Other Observable Inputs (Level 2) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	304,056,000	288,156,000
US Gov’t Sponsored Entities & Agencies | Significant Unobservable  Inputs (Level 3) | Recurring
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	$ 0	$ 0