Loans and Allowance for Loan Losses - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2019 USD ($) Loan Property	Dec. 31, 2018 USD ($) Loan Property
Troubled Debt Restructurings [Abstract]
Number of Contracts	0	0
Number of TDRs with defaults occurring within 12 months of modification	0	0
Number of TDR loans in the portfolio	5	6
TDR loans in the portfolio \| $	$ 2.5	$ 3.4
Number of TDR loans current and performing	5	5
Residential Real Estate [Member]
Troubled Debt Restructurings [Abstract]
Number of foreclosed properties in possession or in process of foreclosure \| Property	0	0

Number of foreclosed properties in possession or in the process of foreclosure.

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- Definition

The number of troubled debt restructuring loans outstanding in the portfolio.

+ References

No definition available.

+ Details

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- Definition

Represents the number of troubled debt restructuring loans that are current and performing in accordance with modified terms.

+ References

No definition available.

+ Details

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- Definition

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

+ References

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ 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=118936363&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953682-111524

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- References

No definition available.

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