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Loans (Activity in Allowance for Credit Losses) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | $ 16,278 | $ 15,823 | $ 15,694
Provision for credit loss expense | 17,550 | 5,325 | 2,070
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (3,136) | (5,402) | (2,546)
Recoveries collected | 514 | 532 | 605
Ending Balance | 46,859 | 16,278 | 15,823
Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 405 |  |
Ending Balance |  | 405 |
Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 8,767 |  |
Ending Balance |  | 8,767 |
Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 6,886 |  |
Ending Balance |  | 6,886 |
Commercial and Industrial Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 4,799 |  |
Provision for credit loss expense | (694) |  |
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (2,119) |  |
Recoveries collected | 23 |  |
Ending Balance | 6,445 | 4,799 |
Commercial and Industrial Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 2,245 |  |
Ending Balance |  | 2,245 |
Commercial and Industrial Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 2,191 |  |
Ending Balance |  | 2,191 |
Commercial Real Estate Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 4,692 | 5,291 | 4,591
Provision for credit loss expense | 17,645 | (308) | 729
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (36) | (320) | (49)
Recoveries collected | 129 | 29 | 20
Ending Balance | 29,878 | 4,692 | 5,291
Commercial Real Estate Loans | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 400 |  |
Ending Balance |  | 400 |
Commercial Real Estate Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 3,063 |  |
Ending Balance |  | 3,063 |
Commercial Real Estate Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 4,385 |  |
Ending Balance |  | 4,385 |
Agricultural Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 5,315 | 5,776 | 4,894
Provision for credit loss expense | (125) | (461) | 862
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | 0 | 0 | 0
Recoveries collected | 0 | 0 | 20
Ending Balance | 6,756 | 5,315 | 5,776
Agricultural Loans | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Agricultural Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 1,438 |  |
Ending Balance |  | 1,438 |
Agricultural Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 128 |  |
Ending Balance |  | 128 |
Leases |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Provision for credit loss expense | 95 |  |
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | 0 |  |
Recoveries collected | 0 |  |
Ending Balance | 200 | 0 |
Leases | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 105 |  |
Ending Balance |  | 105 |
Leases | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Consumer Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 434 | 420 | 298
Provision for credit loss expense | 527 | 727 | 608
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (766) | (1,145) | (861)
Recoveries collected | 354 | 432 | 375
Ending Balance | 490 | 434 | 420
Consumer Loans | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Consumer Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | (59) |  |
Ending Balance |  | (59) |
Consumer Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Home Equity Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 200 | 229 | 330
Provision for credit loss expense | 66 | (27) | (52)
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (67) | (10) | (61)
Recoveries collected | 0 | 8 | 12
Ending Balance | 996 | 200 | 229
Home Equity Loans | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Home Equity Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 762 |  |
Ending Balance |  | 762 |
Home Equity Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 35 |  |
Ending Balance |  | 35 |
Credit Cards |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Provision for credit loss expense | 131 |  |
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (109) |  |
Recoveries collected | 4 |  |
Ending Balance | 150 | 0 |
Credit Cards | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 124 |  |
Ending Balance |  | 124 |
Credit Cards | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Residential Mortgage Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 333 | 472 | 343
Provision for credit loss expense | (95) | (29) | 167
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | (39) | (117) | (75)
Recoveries collected | 4 | 7 | 37
Ending Balance | 1,944 | 333 | 472
Residential Mortgage Loans | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 5 |  |
Ending Balance |  | 5 |
Residential Mortgage Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 1,594 |  |
Ending Balance |  | 1,594 |
Residential Mortgage Loans | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 147 |  |
Ending Balance |  | 147 |
Unallocated |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 505 | 682 | 503
Provision for credit loss expense | 0 | (177) | 179
Initial allowance on loans purchased with credit deterioration | 0 |  |
Loans Charged-off | 0 | 0 | 0
Recoveries collected | 0 | 0 | 0
Ending Balance | 0 | 505 | $ 682
Unallocated | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 0 |  |
Ending Balance |  | 0 |
Unallocated | Impact of ASC 326 Adoption | Impact of adopting ASC 326 |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | (505) |  |
Ending Balance |  | (505) |
Unallocated | Impact of ASC 326 Adoption | Impact of adopting ASC 326 - PCD Loans |  |  |
Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | $ 0 |  |
Ending Balance |  | $ 0 |

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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