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Revenue Recognition - Representation of Performance Obligations Relate to Nature, Amount, Timing and Uncertainty of Revenue and Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financial Advisory Segment [Member]
Disaggregation Of Revenue [Line Items]
Net Revenue	$ 277,574	$ 390,215
Asset Management Segment [Member]
Disaggregation Of Revenue [Line Items]
Net Revenue	284,044	338,501
Asset Management Segment [Member] | Management Fees and Other [Member]
Disaggregation Of Revenue [Line Items]
Net Revenue	278,598	313,336
Asset Management Segment [Member] | Incentive Fees [Member]
Disaggregation Of Revenue [Line Items]
Net Revenue	$ 5,446	$ 25,165

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No definition available.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
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