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Commitment and Contingencies - Narrative (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2021 USD ($) city	Jun. 30, 2020 USD ($)	Mar. 31, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of cities for leased offices | city	19
Lease not yet commenced, future lease payments	$ 3,500
Lease not yet commenced, term	9 years
Occupancy expense		$ 2,300
Unfunded capital commitments	$ 54,000		$ 60,500
Carried interest, contingent repayment obligations	$ 129,900

X

- Definition

Equity Method Investment, Carried Interest Allocations, Maximum Amount Subject To Contingent Repayment

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- Definition

Lessee, Operating Lease, Lease Not yet Commenced, Total Lease Payments Due

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X

- Definition

Lessee, Operating Lease, Number Of Cities

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- References

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

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- Definition

Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

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- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121611286&loc=d3e11927-110247

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82919202-210446

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