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Commitments and Contingencies - Additional Information (Detail) $ in Millions	Oct. 17, 2019 Officer	Sep. 30, 2019 USD ($) EquityFund
Contingencies And Commitments [Line Items]
Number of private equity funds | EquityFund		2
Commitments towards private equity funds | $		$ 7.7
Investment Commitments [Member]
Contingencies And Commitments [Line Items]
Aggregate investment committed in private equity funds | $		$ 7.9
Current Executive Officers [Member] | Subsequent Event [Member]
Contingencies And Commitments [Line Items]
Number of officers | Officer	2
Former Executive Officers [Member] | Subsequent Event [Member]
Contingencies And Commitments [Line Items]
Number of officers | Officer	1

X

- Definition

Amount of contributions made that have been applied to private equity fund commitments.

+ References

No definition available.

+ Details

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- Definition

Contingencies and commitments.

+ References

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+ Details

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- Definition

Number of officers.

+ References

No definition available.

+ Details

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- Definition

The number of investments in private equity funds.

+ References

No definition available.

+ Details

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X

- Definition

Cost of the investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

+ Details

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- Details

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- Details

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