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Compensation - Compensation Expense Related to Class A Common Stock (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
LPU amortization	$ 17,094	$ 16,309
RSU amortization	2,916	1,582
Equity-based compensation and allocations of net income to limited partnership units and FPUs	33,495	42,204
LPUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock and grants of exchangeability	7,854	23,034
Class A Common Stock [Member] | LPUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issuance of common stock and grants of exchangeability	7,854	23,034
Allocations of net income	5,631	1,279
LPU amortization	17,094	16,309
RSU amortization	2,916	1,582
Equity-based compensation and allocations of net income to limited partnership units and FPUs	$ 33,495	$ 42,204

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- Definition

Equity based compensation and allocation of net income to limited partnership units and founding working units.

+ References

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- Definition

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- Definition

Share based compensation arrangement by share based payment award limited partners capital units amortization.

+ References

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- Definition

Share based compensation arrangement by share based payment award restricted stock units amortization.

+ References

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- Definition

Aggregate amount of net income allocated to limited partners.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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