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Summary of Significant Accounting Policies (Impact of ASC 326 in Balance Sheet as January 1, 2020) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | ---
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | $ 3,007,926 | $ 3,091,998 |  | $ 3,081,973 |
Allowance for Credit Losses on Loans | (37,017) | (46,859) | $ (31,931) | (16,278) | $ (15,823)
Allowance for Credit Losses on Unfunded Loan Commitments |  |  | (173) |  |
Commercial and Industrial Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 493,005 | 638,773 | 534,692 | 589,758 |
Allowance for Credit Losses on Loans | (9,554) | (6,445) |  | (4,799) |
Commercial Real Estate Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 1,530,677 | 1,467,397 | 1,500,247 | 1,495,862 |
Allowance for Credit Losses on Loans | (19,245) | (29,878) |  | (4,692) | (5,291)
Agricultural Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 358,150 | 376,186 | 384,654 | 384,526 |
Allowance for Credit Losses on Loans | (4,505) | (6,756) |  | (5,315) | (5,776)
Leases |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 55,345 | 55,664 | 57,257 |  |
Allowance for Credit Losses on Loans | (200) | (200) |  | 0 |
Home Equity Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 222,525 | 219,348 | 225,790 | 225,755 |
Allowance for Credit Losses on Loans | (1,061) | (996) |  | (200) | (229)
Consumer Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 70,302 | 66,717 | 69,264 | 81,217 |
Allowance for Credit Losses on Loans | (507) | (490) |  | (434) | (420)
Credit Cards |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 14,357 | 11,637 | 11,953 |  |
Allowance for Credit Losses on Loans | (240) | (150) |  | 0 |
Residential Mortgage Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans | 263,565 | 256,276 | 305,002 | 304,855 |
Allowance for Credit Losses on Loans | $ (1,705) | $ (1,944) |  | (333) | $ (472)
Adjusted Balance |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 3,081,973 |
Allowance for Credit Losses on Loans |  |  |  | (16,278) |
Allowance for Credit Losses on Unfunded Loan Commitments |  |  |  | 0 |
Adjusted Balance | Commercial and Industrial Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 532,501 |
Adjusted Balance | Commercial Real Estate Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 1,495,862 |
Adjusted Balance | Agricultural Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 384,526 |
Adjusted Balance | Leases |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 57,257 |
Adjusted Balance | Home Equity Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 225,755 |
Adjusted Balance | Consumer Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 69,264 |
Adjusted Balance | Credit Cards |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 11,953 |
Adjusted Balance | Residential Mortgage Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 304,855 |
Impact of ASC 326 Adoption |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  |  | 0 |
Allowance for Credit Losses on Loans |  |  | (15,653) |  |
Allowance for Credit Losses on Unfunded Loan Commitments |  |  | (173) |  |
Impact of ASC 326 Adoption | Commercial and Industrial Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 2,191 | (57,257) |
Impact of ASC 326 Adoption | Commercial Real Estate Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 4,385 |  |
Impact of ASC 326 Adoption | Agricultural Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 128 |  |
Impact of ASC 326 Adoption | Leases |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 0 | 57,257 |
Impact of ASC 326 Adoption | Home Equity Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 35 |  |
Impact of ASC 326 Adoption | Consumer Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 0 | (11,953) |
Impact of ASC 326 Adoption | Credit Cards |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | 0 | $ 11,953 |
Impact of ASC 326 Adoption | Residential Mortgage Loans |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Loans |  |  | $ 147 |  |

X
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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