Investment Securities - Summary of Available-For-Sale Securities and Held to Maturity Securities, Continuous Unrealized Loss Position, Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value		$ 2,079
Less than 12 months unrealized losses		5
12 months or longer fair value	$ 6,830
12 months or longer unrealized losses	(179)
Fair value	6,830	2,079
Unrealized losses	(179)	5
Residential mortgage backed and government securities [Member]
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value		481
Less than 12 months unrealized losses		5
Fair value		481
Unrealized losses		5
Government agencies [Member]
Investments Debt And Equity Securities [Line Items]
Less than 12 months fair value		1,598
Fair value		$ 1,598
Corporate bonds [Member]
Investments Debt And Equity Securities [Line Items]
12 months or longer fair value	6,830
12 months or longer unrealized losses	(179)
Fair value	6,830
Unrealized losses	$ (179)

Investments debt and equity securities.

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

+ References

No definition available.

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27337-111563

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

+ References

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.

+ References

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This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

+ References

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