Contracts In Progress Costs And Earnings [Line Items]

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- Definition

Management contracts impairment amount.

+ References

No definition available.

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- Definition

Number of mutual funds.

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No definition available.

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- Definition

Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

+ References

No definition available.

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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- Definition

Amount of tangible or intangible assets, including a business or subsidiary of the acquirer transferred by the entity to the former owners of the acquiree. Excludes cash.

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- Definition

Amount of assets acquired at the acquisition date.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Management Contracts Purchased - Additional Information (Detail)	Oct. 26, 2018 USD ($)	Dec. 31, 2018 USD ($) Funds	Sep. 30, 2018 USD ($)
Contracts In Progress Costs And Earnings [Line Items]
Number of mutual funds \| Funds		30
Management contracts impairment amount		$ 0	$ 0
Bp Capital Fund Advisors Llc [Member]
Contracts In Progress Costs And Earnings [Line Items]
Business combination, assets acquired and liabilities assumed, assets	$ 200,000,000
Business combination, agreement date	Jul. 10, 2018
Business combination, cash paid	$ 1,600,000
Business combination, consideration transferred, other	$ 100,000
Business acquisition, effective date of acquisition	Oct. 25, 2018