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Loans and Allowance for Loan Losses, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 6,272 |  |  |  | $ 6,728 | $ 6,272 | $ 6,728 | $ 7,499
Provision for loan losses | $ (471) | $ (2) | $ (393) | 3,846 | $ (1,015) | $ 444 | $ (806) | 2,377 | 2,980 | 1,000 | 1,039
Loans charged off |  |  |  |  |  |  |  |  | (3,033) | (5,092) | (3,600)
Recoveries |  |  |  |  |  |  |  |  | 941 | 3,636 | 1,790
Ending balance | 7,160 |  |  |  | 6,272 |  |  |  | 7,160 | 6,272 | 6,728
Residential Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,250 |  |  |  | 1,583 | 1,250 | 1,583 | 1,470
Provision for loan losses |  |  |  |  |  |  |  |  | 413 | 98 | 772
Loans charged off |  |  |  |  |  |  |  |  | (340) | (1,060) | (874)
Recoveries |  |  |  |  |  |  |  |  | 157 | 629 | 215
Ending balance | 1,480 |  |  |  | 1,250 |  |  |  | 1,480 | 1,250 | 1,583
Commercial Real Estate [Member] |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,928 |  |  |  | 2,186 | 1,928 | 2,186 | 2,978
Provision for loan losses |  |  |  |  |  |  |  |  | 946 | (1,745) | (1,311)
Loans charged off |  |  |  |  |  |  |  |  | (559) | (602) | (4)
Recoveries |  |  |  |  |  |  |  |  | 116 | 2,089 | 523
Ending balance | 2,431 |  |  |  | 1,928 |  |  |  | 2,431 | 1,928 | 2,186
Commercial and Industrial [Member] |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 1,447 |  |  |  | 1,063 | 1,447 | 1,063 | 1,024
Provision for loan losses |  |  |  |  |  |  |  |  | 443 | 1,807 | (80)
Loans charged off |  |  |  |  |  |  |  |  | (185) | (1,513) | (208)
Recoveries |  |  |  |  |  |  |  |  | 71 | 90 | 327
Ending balance | 1,776 |  |  |  | 1,447 |  |  |  | 1,776 | 1,447 | 1,063
Consumer [Member] |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 1,647 |  |  |  | $ 1,896 | 1,647 | 1,896 | 2,027
Provision for loan losses |  |  |  |  |  |  |  |  | 1,178 | 840 | 1,658
Loans charged off |  |  |  |  |  |  |  |  | (1,949) | (1,917) | (2,514)
Recoveries |  |  |  |  |  |  |  |  | 597 | 828 | 725
Ending balance | $ 1,473 |  |  |  | $ 1,647 |  |  |  | $ 1,473 | $ 1,647 | $ 1,896

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + 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)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + 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)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + 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 (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 3: 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 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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