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Loans (Components of Loans) (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
--- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 3,120,981 | $ 3,091,998 |  |  | $ 3,081,973
Less: Unearned Income | (3,778) | (3,926) |  |  |
Allowance for Credit Losses | (45,099) | (46,859) | $ (36,641) | $ (31,931) | (16,278)
Loans, Net | 3,072,104 | 3,041,213 |  |  |
Commercial and Industrial Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 672,300 | 638,773 |  | 534,692 | 589,758
Allowance for Credit Losses | (6,248) | (6,445) | (8,814) |  | (4,799)
Commercial Real Estate Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 1,492,617 | 1,467,397 |  | 1,500,247 | 1,495,862
Allowance for Credit Losses | (28,540) | (29,878) | (17,310) |  | (4,692)
Agricultural Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 347,231 | 376,186 |  | 384,654 | 384,526
Allowance for Credit Losses | (6,462) | (6,756) | (6,485) |  | (5,315)
Leases |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 55,714 | 55,664 |  | 57,257 |
Allowance for Credit Losses | (201) | (200) | (172) |  | 0
Home Equity Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 212,306 | 219,348 |  | 225,790 | 225,755
Allowance for Credit Losses | (965) | (996) | (977) |  | (200)
Consumer Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 60,570 | 66,717 |  | 69,264 | 81,217
Allowance for Credit Losses | (439) | (490) | (455) |  | (434)
Credit Cards |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 12,609 | 11,637 |  | 11,953 |
Allowance for Credit Losses | (162) | (150) | (124) |  | 0
Residential Mortgage Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 267,634 | 256,276 |  | $ 305,002 | 304,855
Allowance for Credit Losses | (2,082) | (1,944) | $ (2,304) |  | $ (333)
Commercial | Commercial and Industrial Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 672,300 | 638,773 |  |  |
Commercial | Commercial Real Estate Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 1,492,617 | 1,467,397 |  |  |
Commercial | Agricultural Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 347,231 | 376,186 |  |  |
Commercial | Leases |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 55,714 | 55,664 |  |  |
Retail | Home Equity Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 212,306 | 219,348 |  |  |
Retail | Consumer Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 60,570 | 66,717 |  |  |
Retail | Credit Cards |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | 12,609 | 11,637 |  |  |
Retail | Residential Mortgage Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Total | $ 267,634 | $ 256,276 |  |  |

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