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Derivatives and Balance Sheet Offsetting - Not designated as hedging instruments gain/loss table (Details) - Not Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Balance Sheet Offsetting [Line Items] |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ (182) | $ 164 | $ (478) | $ (309)
Interest Rate Contracts [Member] | Interest Rate Lock Commitments Contracts |  |  |  |
Balance Sheet Offsetting [Line Items] |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (103) | 169 | (614) | 169
Interest Rate Contracts [Member] | Interest rate Forward Sales Contracts |  |  |  |
Balance Sheet Offsetting [Line Items] |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (57) | (3) | 86 | (3)
Interest Rate Contracts [Member] | Interest Rate Swap Contracts |  |  |  |
Balance Sheet Offsetting [Line Items] |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ (22) | $ (2) | $ 50 | $ (475)

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- Definition Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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