Employee Stock Ownership Plan - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Note payable balance of ESOP	$ 2.6	$ 2.7	$ 3.0
Shares purchased by ESOP			295,499
ESOP released shares	47,200	35,400

Employee stock ownership plan ESOP number of released shares.

No definition available.

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Balance Type:	na
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

The amount reported as a liability as of the balance sheet date by the entity (the employer) of the loan made by a third-party lender to the employer relating to loans made by the employer to the ESOP.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 25
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109244457&loc=d3e16545-113920

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929

+ Details

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