Employee Stock Ownership Plan - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2019
ESOP Purchased		175,528
Compensation Expense	$ 17	$ 51
Fair Value of Unallocated Shares Of ESOP Share Price		$ 9.64
Share-based Compensation Award, Tranche One [Member]
Vested Percentage		20.00%
Vested Years Of Service		1 year
Share-based Compensation Award, Tranche Two [Member]
Vested Percentage		40.00%
Vested Years Of Service		2 years
Share-based Compensation Award, Tranche Three [Member]
Vested Percentage		60.00%
Vested Years Of Service		3 years
Sharebased Compensation Award Tranche Four [Member]
Vested Percentage		80.00%
Vested Years Of Service		4 years
Sharebased Compensation Award Tranche Five [Member]
Vested Percentage		100.00%
Vested Years Of Service		5 years

Represents Fair Value of Unallocated Shares Of ESOP Share Price.

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- Definition

The amount of plan compensation cost recognized during the period.

+ 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 (c)
-URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929

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- Definition

This item represents the number of shares provided to the Employee Stock Ownership Plan (ESOP) during the period.

+ 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 (a)
-URI http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Percentage of vesting of award under share-based payment arrangement.

+ References

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