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Loans and Allowance for Credit Losses on Loans (Activity in Allowance for Credit Losses on Loans by Portfolio Segment) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | $ 25,171 | $ 24,712 | $ 24,171
Loans charged off | (1,838) | (2,713) | (2,248)
Recoveries | 1,084 | 310 | 1,944
Provision (credit) | 13,215 | 2,862 | 845
Ending balance | 37,865 | 25,171 | 24,712
Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 233 |  |
Ending balance |  | 233 |
Commercial real estate, non owner-occupied |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 10,924 |  |
Loans charged off | (82) |  |
Recoveries | 107 |  |
Provision (credit) | 11,497 |  |
Ending balance | 21,778 | 10,924 |
Commercial real estate, non owner-occupied | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | (668) |  |
Ending balance |  | (668) |
Commercial real estate, owner-occupied |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 1,490 |  |
Loans charged off | (21) |  |
Recoveries | 13 |  |
Provision (credit) | 1,440 |  |
Ending balance | 2,832 | 1,490 |
Commercial real estate, owner-occupied | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | (90) |  |
Ending balance |  | (90) |
Commercial |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 3,985 | 3,957 | 4,622
Loans charged off | (1,130) | (1,238) | (991)
Recoveries | 572 | 225 | 1,771
Provision (credit) | 1,728 | 1,041 | (1,445)
Ending balance | 6,703 | 3,985 | 3,957
Commercial | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 1,548 |  |
Ending balance |  | 1,548 |
SBA PPP Portfolio Segment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Loans charged off | 0 |  |
Recoveries | 0 |  |
Provision (credit) | 69 |  |
Ending balance | 69 |  |
SBA PPP Portfolio Segment | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 0 |  |
Ending balance |  | 0 |
Residential real estate |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 5,842 | 6,071 | 5,086
Loans charged off | (121) | (462) | (173)
Recoveries | 292 | 16 | 90
Provision (credit) | (1,410) | 217 | 1,068
Ending balance | 3,474 | 5,842 | 6,071
Residential real estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | (1,129) |  |
Ending balance |  | (1,129) |
Home equity |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 2,423 | 2,796 | 2,367
Loans charged off | (317) | (412) | (476)
Recoveries | 33 | 1 | 44
Provision (credit) | (315) | 38 | 861
Ending balance | 2,616 | 2,423 | 2,796
Home equity | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 792 |  |
Ending balance |  | 792 |
Consumer |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | 507 | 234 | 233
Loans charged off | (167) | (301) | (96)
Recoveries | 67 | 19 | 11
Provision (credit) | 206 | 555 | 86
Ending balance | 393 | 507 | $ 234
Consumer | Cumulative Effect, Period of Adoption, Adjustment |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning balance | $ (220) |  |
Ending balance |  | $ (220) |

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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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