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Troubled Debt Restructurings - Loans By Class of Financing Receivable Modified as TDRs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 loan	Dec. 31, 2019 USD ($) loan contract
Troubled Debt Restructuring Subsequent Periods [Line Items]
Number of troubled debt restructured loans | loan	17	18
Troubled Debt Restructurings Within Previous Twelve Months
Troubled Debt Restructuring Subsequent Periods [Line Items]
Number of troubled debt restructured loans | contract		1
Troubled Debt Restructuring Modifications Recorded Investment | $		$ 72
Troubled Debt Restructurings Within Previous Twelve Months | Residential Single Family
Troubled Debt Restructuring Subsequent Periods [Line Items]
Number of troubled debt restructured loans | contract		1
Troubled Debt Restructuring Modifications Recorded Investment | $		$ 72

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Troubled debt restructuring modifications recorded investment.

+ References

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Troubled Debt Restructuring, Subsequent Periods [Line Items]

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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