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Allowance for Credit Losses (Details 2) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | $ 3,172 |  |
Balance, end of year |  | $ 3,172 |
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | 777 |  |
Balance, end of year |  | 777 |
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | 3,949 |  |
Balance, end of year |  | 3,949 |
Unfunded Loan Commitment |  |  |
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | 3,172 | 3,075 | $ 3,050
Provision (recovery of provision) on unfunded loan commitments | 550 | 97 | 25
Balance, end of year | 4,499 | 3,172 | 3,075
Unfunded Loan Commitment | Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | 777 | 0 | 0
Balance, end of year |  | 777 | 0
Unfunded Loan Commitment | Cumulative Effect, Period of Adoption, Adjusted Balance [Member] |  |  |
Changes in allowance for loan and lease losses |  |  |
Balance, beginning of year | $ 3,949 | 3,075 | 3,050
Balance, end of year |  | $ 3,949 | $ 3,075

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- Definition Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82919202-210446 + Details
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- Definition Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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