Loans - Components of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 5,787,622		$ 4,133,267
Less: Unearned Income	(9,117)		(8,365)
Allowance for Credit Losses	(76,057)	$ (76,105)	(44,436)	$ (44,124)	$ (43,946)	$ (43,765)
Loans, Net	5,702,448		4,080,466
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	730,134		591,785
Allowance for Credit Losses	(17,633)	(17,739)	(7,059)	(6,974)	(7,200)	(7,921)
Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,103,181		2,224,872
Allowance for Credit Losses	(39,132)	(38,803)	(25,818)	(26,656)	(26,598)	(25,923)
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	472,807		431,037
Allowance for Credit Losses	(3,228)	(3,130)	(4,917)	(3,901)	(3,697)	(3,837)
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	85,088		79,253
Allowance for Credit Losses	(1,176)	(1,192)	(397)	(396)	(368)	(346)
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	456,839		344,808
Allowance for Credit Losses	(4,314)	(4,334)	(2,196)	(2,130)	(2,058)	(1,834)
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	119,642		81,396
Allowance for Credit Losses	(686)	(691)	(727)	(740)	(722)	(759)
Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	27,261		22,668
Allowance for Credit Losses	(673)	(621)	(520)	(466)	(413)	(383)
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	792,670		357,448
Allowance for Credit Losses	(9,215)	$ (9,595)	(2,802)	$ (2,861)	$ (2,890)	$ (2,762)
Commercial: | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	730,134		591,785
Commercial: | Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	3,103,181		2,224,872
Commercial: | Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	472,807		431,037
Commercial: | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	85,088		79,253
Retail: | Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	456,839		344,808
Retail: | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	119,642		81,396
Retail: | Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	27,261		22,668
Retail: | Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 792,670		$ 357,448