Loans - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 3,830,481		$ 3,830,481		$ 3,788,645
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Total	849	$ 447	2,087	$ 816
Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	54,353		54,353		158,088
2022-2021	147,408		147,408		123,425
2021-2020	103,240		103,240		41,375
2020-2019	34,807		34,807		47,887
2019-2018	41,322		41,322		20,002
Prior	64,378		64,378		56,065
Revolving Loans Amortized Cost Basis	162,776		162,776		173,264
Total	608,284		608,284		620,106
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			861
2021			32
2020			33
2019			0
Prior			50
Revolving Loans Amortized Cost Basis			101
Total	343	56	1,077	61
Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	164,660		164,660		402,613
2022-2021	412,782		412,782		496,943
2021-2020	495,061		495,061		266,563
2020-2019	237,684		237,684		164,251
2019-2018	154,467		154,467		143,819
Prior	523,353		523,353		457,532
Revolving Loans Amortized Cost Basis	33,102		33,102		35,163
Total	2,021,109		2,021,109		1,966,884
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Total	0	0	0	78
Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	25,908		25,908		63,307
2022-2021	59,611		59,611		48,734
2021-2020	45,075		45,075		54,049
2020-2019	51,186		51,186		30,009
2019-2018	26,119		26,119		24,168
Prior	122,292		122,292		108,974
Revolving Loans Amortized Cost Basis	65,275		65,275		88,172
Total	395,466		395,466		417,413
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			25
Revolving Loans Amortized Cost Basis			0
Total	25	0	25	0
Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	15,188		15,188		20,057
2022-2021	15,821		15,821		14,461
2021-2020	12,454		12,454		9,648
2020-2019	7,925		7,925		8,901
2019-2018	7,142		7,142		1,851
Prior	2,323		2,323		1,478
Revolving Loans Amortized Cost Basis	0		0		0
Total	60,853		60,853		56,396
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			0
2021			0
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Total	0	$ 0	0	$ 0
Pass | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	54,328		54,328		156,318
2022-2021	146,823		146,823		117,648
2021-2020	97,546		97,546		39,949
2020-2019	33,668		33,668		46,505
2019-2018	39,516		39,516		18,423
Prior	60,729		60,729		51,482
Revolving Loans Amortized Cost Basis	144,955		144,955		154,203
Total	577,565		577,565		584,528
Pass | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	151,013		151,013		398,631
2022-2021	411,741		411,741		490,747
2021-2020	488,764		488,764		261,462
2020-2019	232,238		232,238		162,701
2019-2018	153,101		153,101		129,151
Prior	499,661		499,661		427,433
Revolving Loans Amortized Cost Basis	32,722		32,722		35,163
Total	1,969,240		1,969,240		1,905,288
Pass | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	24,291		24,291		62,673
2022-2021	59,278		59,278		47,682
2021-2020	43,841		43,841		47,355
2020-2019	44,708		44,708		25,431
2019-2018	23,191		23,191		21,728
Prior	107,131		107,131		92,344
Revolving Loans Amortized Cost Basis	61,116		61,116		83,862
Total	363,556		363,556		381,075
Pass | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	15,188		15,188		20,057
2022-2021	15,821		15,821		14,461
2021-2020	12,454		12,454		9,648
2020-2019	7,925		7,925		8,901
2019-2018	7,142		7,142		1,851
Prior	2,323		2,323		1,478
Revolving Loans Amortized Cost Basis	0		0		0
Total	60,853		60,853		56,396
Special Mention | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		56
2022-2021	55		55		148
2021-2020	446		446		577
2020-2019	589		589		78
2019-2018	650		650		551
Prior	1,504		1,504		2,346
Revolving Loans Amortized Cost Basis	5,182		5,182		1,672
Total	8,426		8,426		5,428
Special Mention | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	13,647		13,647		3,982
2022-2021	836		836		1,568
2021-2020	948		948		4,612
2020-2019	4,774		4,774		135
2019-2018	243		243		13,689
Prior	20,191		20,191		25,371
Revolving Loans Amortized Cost Basis	0		0		0
Total	40,639		40,639		49,357
Special Mention | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	1,617		1,617		634
2022-2021	333		333		842
2021-2020	1,028		1,028		6,066
2020-2019	5,856		5,856		4,149
2019-2018	2,593		2,593		2,355
Prior	10,950		10,950		11,440
Revolving Loans Amortized Cost Basis	4,159		4,159		4,310
Total	26,536		26,536		29,796
Special Mention | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Substandard | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	25		25		1,714
2022-2021	530		530		5,629
2021-2020	5,248		5,248		849
2020-2019	550		550		1,304
2019-2018	1,156		1,156		1,028
Prior	2,145		2,145		2,237
Revolving Loans Amortized Cost Basis	12,639		12,639		17,389
Total	22,293		22,293		30,150
Substandard | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	205		205		4,628
2021-2020	5,349		5,349		489
2020-2019	672		672		1,415
2019-2018	1,123		1,123		979
Prior	3,501		3,501		4,728
Revolving Loans Amortized Cost Basis	380		380		0
Total	11,230		11,230		12,239
Substandard | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		210
2021-2020	206		206		628
2020-2019	622		622		429
2019-2018	335		335		85
Prior	4,211		4,211		5,190
Revolving Loans Amortized Cost Basis	0		0		0
Total	5,374		5,374		6,542
Substandard | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Doubtful | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Doubtful | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Doubtful | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	0		0		0
Doubtful | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		0
2021-2020	0		0		0
2020-2019	0		0		0
2019-2018	0		0		0
Prior	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Total	$ 0		$ 0		$ 0