Loans - Aging of Past Due Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Past Due [Line Items]
Total	$ 5,787,622	$ 4,133,267
Total Past Due
Financing Receivable, Past Due [Line Items]
Total	37,497	23,779
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	13,959	9,160
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	4,468	5,189
Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	19,070	9,430
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	5,750,125	4,109,488
Commercial and Industrial Loans
Financing Receivable, Past Due [Line Items]
Total	730,134	591,785
Commercial and Industrial Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	8,585	4,962
Commercial and Industrial Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	451	531
Commercial and Industrial Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	200	36
Commercial and Industrial Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	7,934	4,395
Commercial and Industrial Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	721,549	586,823
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Total	3,103,181	2,224,872
Commercial Real Estate Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	7,737	2,587
Commercial Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1,647	546
Commercial Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	929	673
Commercial Real Estate Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	5,161	1,368
Commercial Real Estate Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	3,095,444	2,222,285
Agricultural Loans
Financing Receivable, Past Due [Line Items]
Total	472,807	431,037
Agricultural Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	2,605	669
Agricultural Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1,019	241
Agricultural Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	365	0
Agricultural Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	1,221	428
Agricultural Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	470,202	430,368
Leases
Financing Receivable, Past Due [Line Items]
Total	85,088	79,253
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	85,088	79,253
Home Equity Loans
Financing Receivable, Past Due [Line Items]
Total	456,839	344,808
Home Equity Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	3,759	3,146
Home Equity Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	2,509	1,515
Home Equity Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	365	544
Home Equity Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	885	1,087
Home Equity Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	453,080	341,662
Consumer Loans
Financing Receivable, Past Due [Line Items]
Total	119,642	81,396
Consumer Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	757	442
Consumer Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	653	185
Consumer Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	47	194
Consumer Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	57	63
Consumer Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	118,885	80,954
Credit Cards
Financing Receivable, Past Due [Line Items]
Total	27,261	22,668
Credit Cards | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	462	550
Credit Cards | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	271	398
Credit Cards | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	133	98
Credit Cards | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	58	54
Credit Cards | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	26,799	22,118
Residential Mortgage Loans
Financing Receivable, Past Due [Line Items]
Total	792,670	357,448
Residential Mortgage Loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total	13,592	11,423
Residential Mortgage Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	7,409	5,744
Residential Mortgage Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	2,429	3,644
Residential Mortgage Loans | Greater Than 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total	3,754	2,035
Residential Mortgage Loans | Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Total	$ 779,078	$ 346,025