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Loans - Aging of Past Due Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 3,772,866 | $ 3,788,645
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 23,821 | 25,122
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 11,913 | 10,633
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 932 | 3,706
Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 10,976 | 10,783
Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 3,749,045 | 3,763,523
Commercial and Industrial Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 608,870 | 620,106
Commercial and Industrial Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 8,302 | 9,234
Commercial and Industrial Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,165 | 268
Commercial and Industrial Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 221 | 681
Commercial and Industrial Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,916 | 8,285
Commercial and Industrial Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 600,568 | 610,872
Commercial Real Estate Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,000,237 | 1,966,884
Commercial Real Estate Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 3,354 | 2,247
Commercial Real Estate Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,870 | 1,617
Commercial Real Estate Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 121 | 14
Commercial Real Estate Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,363 | 616
Commercial Real Estate Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,996,883 | 1,964,637
Agricultural Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 378,587 | 417,413
Agricultural Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,856 | 466
Agricultural Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,465 | 343
Agricultural Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 69 | 0
Agricultural Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,322 | 123
Agricultural Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 375,731 | 416,947
Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 58,436 | 56,396
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 | 58,436 | 56,396
Home Equity Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 277,576 | 279,748
Home Equity Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,466 | 2,220
Home Equity Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,571 | 1,770
Home Equity Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 230 | 140
Home Equity Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 665 | 310
Home Equity Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 275,110 | 277,528
Consumer Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 80,502 | 79,904
Consumer Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 319 | 535
Consumer Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 255 | 219
Consumer Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 51 | 64
Consumer Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 13 | 252
Consumer Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 80,183 | 79,369
Credit Cards |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 18,320 | 17,512
Credit Cards | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 334 | 256
Credit Cards | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 150 | 86
Credit Cards | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 39 | 24
Credit Cards | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 145 | 146
Credit Cards | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,986 | 17,256
Residential Mortgage Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 350,338 | 350,682
Residential Mortgage Loans | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 6,190 | 10,164
Residential Mortgage Loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,437 | 6,330
Residential Mortgage Loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 201 | 2,783
Residential Mortgage Loans | Greater Than 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 552 | 1,051
Residential Mortgage Loans | Loans Not Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 344,148 | $ 340,518

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