Loans - Components of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 3,686,368		$ 3,007,926
Less: Unearned Income	(3,852)		(3,662)
Allowance for Credit Losses	(44,699)	$ (45,031)	(37,017)	$ (37,798)	$ (39,995)	$ (46,859)
Loans, Net	3,637,817		2,967,247
Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	585,449		493,005
Allowance for Credit Losses	(13,455)	(13,545)	(9,554)	(8,054)	(6,080)	(6,445)
Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,923,794		1,530,677
Allowance for Credit Losses	(22,143)	(22,349)	(19,245)	(21,392)	(24,220)	(29,878)
Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	401,608		358,150
Allowance for Credit Losses	(4,529)	(4,628)	(4,505)	(4,695)	(5,847)	(6,756)
Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	58,835		55,345
Allowance for Credit Losses	(218)	(191)	(200)	(203)	(204)	(200)
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	273,786		222,525
Allowance for Credit Losses	(1,313)	(1,233)	(1,061)	(1,017)	(908)	(996)
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	80,617		70,302
Allowance for Credit Losses	(594)	(668)	(507)	(483)	(460)	(490)
Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	15,932		14,357
Allowance for Credit Losses	(236)	(239)	(240)	(192)	(181)	(150)
Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	346,347		263,565
Allowance for Credit Losses	(2,211)	$ (2,178)	(1,705)	$ (1,762)	$ (2,095)	$ (1,944)
Commercial: | Commercial and Industrial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	585,449		493,005
Commercial: | Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	1,923,794		1,530,677
Commercial: | Agricultural Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	401,608		358,150
Commercial: | Leases
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	58,835		55,345
Retail: | Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	273,786		222,525
Retail: | Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	80,617		70,302
Retail: | Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	15,932		14,357
Retail: | Residential Mortgage Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans	$ 346,347		$ 263,565