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Derivatives Statements of financial performance and financial position (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Derivative [Line Items] |  |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 575 |
Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 25,000 | $ 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 575 |
Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 35,503 | $ 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 |
Other Assets [Member] | Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 0 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 |
Other Assets [Member] | Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 24,421 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (1,781) |
Other Assets [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 11,083 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (89) |
Other Assets [Member] | Interest Rate Swap [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 35,504 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | (1,870) |
Other Liabilities [Member] | Borrowing Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 25,000 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 575 |
Other Liabilities [Member] | Loan Derivative [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 11,083 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 89 |
Other Liabilities [Member] | Loan Derivative [Member] | Individually Immaterial Counterparties [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 24,421 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 1,781 |
Other Liabilities [Member] | Interest Rate Swap [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 60,504 |
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | $ 2,445 |

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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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