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Commitments and Contingencies - Additional Information (Detail) $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 17, 2019 Officer | Dec. 31, 2019 USD ($) EquityFund | Dec. 31, 2018 USD ($)
Contingencies And Commitments [Line Items] |  |  |
Number of private equity funds | EquityFund |  | 2 |
Commitments towards private equity funds |  | $ 7.7 |
Commitments related to performance bonds |  | $ 9.3 | $ 6.5
Commitments related to performance bonds expiration month and year |  | 2024-08 |
Investment Commitments [Member] |  |  |
Contingencies And Commitments [Line Items] |  |  |
Aggregate investment committed in private equity funds |  | $ 7.9 |
Current Executive Officers [Member] |  |  |
Contingencies And Commitments [Line Items] |  |  |
Number of officers | Officer | 2 |  |
Former Executive Officers [Member] |  |  |
Contingencies And Commitments [Line Items] |  |  |
Number of officers | Officer | 1 |  |

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- Definition Commitments related to performance bonds. + References No definition available. + Details
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- Definition Commitments related to performance bonds expiration month and year. + References No definition available. + Details
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- 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 No definition available. + 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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- 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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- Details
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