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Derivatives and Balance Sheet Offsetting - Not designated as hedging instruments gain/loss table (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Balance Sheet Offsetting [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ 479 | $ (1) | $ 8
Interest Rate Contracts | Interest Rate Lock Commitments |  |  |
Balance Sheet Offsetting [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | 1,096 | 0 | 0
Interest Rate Contracts | Forward sales contracts |  |  |
Balance Sheet Offsetting [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | (165) | 0 | 0
Interest Rate Contracts | Interest Rate Swap |  |  |
Balance Sheet Offsetting [Line Items] |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ (452) | $ (1) | $ 8

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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=121590274&loc=SL5618551-113959 + Details
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