Loans - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 3,686,368	$ 3,007,926
Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	111,974	141,348
2021-2020	124,585	58,826
2020-2019	59,714	61,110
2019-2018	52,356	30,716
2018-2017	24,881	17,321
Prior	62,780	51,934
Revolving Loans Amortized Cost Basis	149,159	131,750
Total	585,449	493,005
Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	294,419	406,528
2021-2020	527,837	264,011
2020-2019	262,419	172,601
2019-2018	168,460	147,700
2018-2017	145,967	157,144
Prior	488,590	355,996
Revolving Loans Amortized Cost Basis	36,102	26,697
Total	1,923,794	1,530,677
Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	45,890	46,224
2021-2020	50,945	50,447
2020-2019	56,620	28,048
2019-2018	31,533	27,597
2018-2017	25,096	31,811
Prior	113,626	84,741
Revolving Loans Amortized Cost Basis	77,898	89,282
Total	401,608	358,150
Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	17,393	19,689
2021-2020	15,606	12,706
2020-2019	10,424	12,990
2019-2018	10,294	5,599
2018-2017	2,891	2,473
Prior	2,227	1,888
Revolving Loans Amortized Cost Basis	0	0
Total	58,835	55,345
Pass | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	111,525	141,133
2021-2020	123,677	57,477
2020-2019	57,536	60,883
2019-2018	51,559	29,005
2018-2017	23,247	15,936
Prior	58,000	48,559
Revolving Loans Amortized Cost Basis	132,475	122,377
Total	558,019	475,370
Pass | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	290,468	404,175
2021-2020	525,752	264,011
2020-2019	257,282	164,204
2019-2018	166,885	131,746
2018-2017	130,354	139,788
Prior	455,627	336,066
Revolving Loans Amortized Cost Basis	36,102	26,697
Total	1,862,470	1,466,687
Pass | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	45,345	44,510
2021-2020	49,076	45,101
2020-2019	49,900	22,482
2019-2018	26,813	24,187
2018-2017	22,914	24,325
Prior	96,916	71,268
Revolving Loans Amortized Cost Basis	73,735	81,011
Total	364,699	312,884
Pass | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	17,393	19,689
2021-2020	15,606	12,706
2020-2019	10,424	12,990
2019-2018	10,294	5,599
2018-2017	2,891	2,473
Prior	2,227	1,888
Revolving Loans Amortized Cost Basis	0	0
Total	58,835	55,345
Special Mention | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	42	115
2021-2020	98	128
2020-2019	536	227
2019-2018	85	649
2018-2017	562	7
Prior	667	918
Revolving Loans Amortized Cost Basis	1,655	1,510
Total	3,645	3,554
Special Mention | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	3,118	2,279
2021-2020	1,472	0
2020-2019	4,644	710
2019-2018	136	14,426
2018-2017	13,759	17,356
Prior	27,338	13,916
Revolving Loans Amortized Cost Basis	0	0
Total	50,467	48,687
Special Mention | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	545	1,714
2021-2020	1,659	5,346
2020-2019	6,720	5,503
2019-2018	4,563	3,025
2018-2017	2,111	6,438
Prior	11,428	6,624
Revolving Loans Amortized Cost Basis	3,810	8,271
Total	30,836	36,921
Special Mention | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Substandard | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	407	100
2021-2020	810	1,221
2020-2019	1,642	0
2019-2018	711	1,062
2018-2017	1,072	1,378
Prior	4,113	2,457
Revolving Loans Amortized Cost Basis	15,029	7,863
Total	23,784	14,081
Substandard | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	833	74
2021-2020	613	0
2020-2019	493	7,687
2019-2018	1,439	1,528
2018-2017	1,854	0
Prior	5,625	6,014
Revolving Loans Amortized Cost Basis	0	0
Total	10,857	15,303
Substandard | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	210	0
2020-2019	0	63
2019-2018	157	385
2018-2017	71	1,048
Prior	5,282	6,849
Revolving Loans Amortized Cost Basis	353	0
Total	6,073	8,345
Substandard | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful | Commercial and Industrial Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	1	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	1	0
Doubtful | Commercial Real Estate Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful | Agricultural Loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Doubtful | Leases
Financing Receivable, Credit Quality Indicator [Line Items]
2022-2021	0	0
2021-2020	0	0
2020-2019	0	0
2019-2018	0	0
2018-2017	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	$ 0	$ 0