Loans - Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total	$ 3,686,368	$ 3,007,926
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	21,045	11,490
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	8,890	3,182
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	2,646	808
Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	9,509	7,500
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	3,665,323	2,996,436
Commercial and Industrial Loans
Financing Receivable, Past Due [Line Items]
Total	585,449	493,005
Commercial and Industrial Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	7,216	6,159
Commercial and Industrial Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	212	12
Commercial and Industrial Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total		0
Commercial and Industrial Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	7,004	6,147
Commercial and Industrial Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	578,233	486,846
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Total	1,923,794	1,530,677
Commercial Real Estate Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	1,510	896
Commercial Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	413	0
Commercial Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	480	5
Commercial Real Estate Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	617	891
Commercial Real Estate Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	1,922,284	1,529,781
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Total	401,608	358,150
Agricultural Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	1,173	0
Agricultural Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	296	0
Agricultural Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	179	0
Agricultural Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	698	0
Agricultural Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	400,435	358,150
Leases
Financing Receivable, Past Due [Line Items]
Total	58,835	55,345
Leases | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	0	0
Leases | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0	0
Leases | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0	0
Leases | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	0	0
Leases | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	58,835	55,345
Home Equity Loans
Financing Receivable, Past Due [Line Items]
Total	273,786	222,525
Home Equity Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	1,365	479
Home Equity Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	913	225
Home Equity Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	189	229
Home Equity Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	263	25
Home Equity Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	272,421	222,046
Consumer Loans
Financing Receivable, Past Due [Line Items]
Total	80,617	70,302
Consumer Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	144	220
Consumer Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	95	158
Consumer Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	48	58
Consumer Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1	4
Consumer Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	80,473	70,082
Credit Cards
Financing Receivable, Past Due [Line Items]
Total	15,932	14,357
Credit Cards | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	252	134
Credit Cards | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	135	61
Credit Cards | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	42	9
Credit Cards | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	75	64
Credit Cards | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	15,680	14,223
Residential Mortgage Loans
Financing Receivable, Past Due [Line Items]
Total	346,347	263,565
Residential Mortgage Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	9,385	3,602
Residential Mortgage Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	6,826	2,726
Residential Mortgage Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1,708	507
Residential Mortgage Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	851	369
Residential Mortgage Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 336,962	$ 259,963