Loans - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 3,893,573		$ 3,893,573		$ 3,788,645
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Total	650	$ 820	2,737	$ 1,636
Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	88,427		88,427		158,088
2022-2021	141,517		141,517		123,425
2021-2020	92,978		92,978		41,375
2020-2019	33,096		33,096		47,887
2019-2018	38,414		38,414		20,002
Prior	54,780		54,780		56,065
Revolving Loans Amortized Cost Basis	149,681		149,681		173,264
Total	598,893		598,893		620,106
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			911
2021			32
2020			33
2019			7
Prior			88
Revolving Loans Amortized Cost Basis			181
Total	175	238	1,252	299
Commercial and Industrial Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	88,379		88,379		156,318
2022-2021	140,656		140,656		117,648
2021-2020	86,196		86,196		39,949
2020-2019	30,700		30,700		46,505
2019-2018	36,656		36,656		18,423
Prior	51,279		51,279		51,482
Revolving Loans Amortized Cost Basis	136,528		136,528		154,203
Total	570,394		570,394		584,528
Commercial and Industrial Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	48		48		56
2022-2021	470		470		148
2021-2020	498		498		577
2020-2019	1,609		1,609		78
2019-2018	642		642		551
Prior	1,991		1,991		2,346
Revolving Loans Amortized Cost Basis	5,843		5,843		1,672
Total	11,101		11,101		5,428
Commercial and Industrial Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		1,714
2022-2021	391		391		5,629
2021-2020	6,284		6,284		849
2020-2019	787		787		1,304
2019-2018	1,116		1,116		1,028
Prior	1,510		1,510		2,237
Revolving Loans Amortized Cost Basis	7,310		7,310		17,389
Total	17,398		17,398		30,150
Commercial and Industrial Loans | Doubtful
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
Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	231,679		231,679		402,613
2022-2021	426,667		426,667		496,943
2021-2020	490,433		490,433		266,563
2020-2019	232,637		232,637		164,251
2019-2018	151,699		151,699		143,819
Prior	507,347		507,347		457,532
Revolving Loans Amortized Cost Basis	36,500		36,500		35,163
Total	2,076,962		2,076,962		1,966,884
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			0
2021			56
2020			0
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			0
Total	56	1	56	79
Commercial Real Estate Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	218,088		218,088		398,631
2022-2021	424,293		424,293		490,747
2021-2020	473,834		473,834		261,462
2020-2019	227,014		227,014		162,701
2019-2018	150,687		150,687		129,151
Prior	482,924		482,924		427,433
Revolving Loans Amortized Cost Basis	36,185		36,185		35,163
Total	2,013,025		2,013,025		1,905,288
Commercial Real Estate Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	13,591		13,591		3,982
2022-2021	2,171		2,171		1,568
2021-2020	11,239		11,239		4,612
2020-2019	4,471		4,471		135
2019-2018	264		264		13,689
Prior	21,051		21,051		25,371
Revolving Loans Amortized Cost Basis	0		0		0
Total	52,787		52,787		49,357
Commercial Real Estate Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	203		203		4,628
2021-2020	5,360		5,360		489
2020-2019	1,152		1,152		1,415
2019-2018	748		748		979
Prior	3,372		3,372		4,728
Revolving Loans Amortized Cost Basis	315		315		0
Total	11,150		11,150		12,239
Commercial Real Estate Loans | Doubtful
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
Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	35,565		35,565		63,307
2022-2021	58,777		58,777		48,734
2021-2020	41,871		41,871		54,049
2020-2019	47,949		47,949		30,009
2019-2018	25,497		25,497		24,168
Prior	119,841		119,841		108,974
Revolving Loans Amortized Cost Basis	68,609		68,609		88,172
Total	398,109		398,109		417,413
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
2023			0
2022			0
2021			0
2020			2
2019			0
Prior			0
Revolving Loans Amortized Cost Basis			25
Total	2	0	27	0
Agricultural Loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	33,037		33,037		62,673
2022-2021	58,537		58,537		47,682
2021-2020	41,034		41,034		47,355
2020-2019	42,723		42,723		25,431
2019-2018	22,653		22,653		21,728
Prior	104,949		104,949		92,344
Revolving Loans Amortized Cost Basis	65,960		65,960		83,862
Total	368,893		368,893		381,075
Agricultural Loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	2,528		2,528		634
2022-2021	240		240		842
2021-2020	635		635		6,066
2020-2019	5,037		5,037		4,149
2019-2018	2,552		2,552		2,355
Prior	10,101		10,101		11,440
Revolving Loans Amortized Cost Basis	2,649		2,649		4,310
Total	23,742		23,742		29,796
Agricultural Loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	0		0		0
2022-2021	0		0		210
2021-2020	202		202		628
2020-2019	189		189		429
2019-2018	292		292		85
Prior	4,791		4,791		5,190
Revolving Loans Amortized Cost Basis	0		0		0
Total	5,474		5,474		6,542
Agricultural Loans | Doubtful
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
Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	27,207		27,207		20,057
2022-2021	13,519		13,519		14,461
2021-2020	11,533		11,533		9,648
2020-2019	6,964		6,964		8,901
2019-2018	6,076		6,076		1,851
Prior	1,700		1,700		1,478
Revolving Loans Amortized Cost Basis	0		0		0
Total	66,999		66,999		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
Leases | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023-2022	27,207		27,207		20,057
2022-2021	13,519		13,519		14,461
2021-2020	11,533		11,533		9,648
2020-2019	6,964		6,964		8,901
2019-2018	6,076		6,076		1,851
Prior	1,700		1,700		1,478
Revolving Loans Amortized Cost Basis	0		0		0
Total	66,999		66,999		56,396
Leases | Special Mention
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
Leases | Substandard
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
Leases | Doubtful
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