Loans - Summary of Loans Modified in a TDR (Details)	12 Months Ended
Dec. 31, 2019 USD ($) contract	Dec. 31, 2018 USD ($) loan
Financing Receivable, Modifications [Line Items]
Number of Relationships	2	1
Pre-Modification Outstanding Recorded Investment	$ 2,836,000
Post-Modification Outstanding Recorded Investment	$ 2,836,000
One-to-four family residential mortgage
Financing Receivable, Modifications [Line Items]
Number of Relationships \| contract	1
Pre-Modification Outstanding Recorded Investment	$ 2,000	$ 6,400
Post-Modification Outstanding Recorded Investment	$ 2,000
Commercial real estate
Financing Receivable, Modifications [Line Items]
Number of Relationships \| contract	1
Pre-Modification Outstanding Recorded Investment	$ 2,834,000
Post-Modification Outstanding Recorded Investment	$ 2,834,000

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No definition available.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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