Revenues - Schedule of Disaggregation of Revenue by Product Offering (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2024
Management and advisory fees, net
Disaggregation of Revenue [Line Items]
Revenues	$ 926,465	$ 767,014	$ 585,140
Focused commingled funds
Disaggregation of Revenue [Line Items]
Revenues	547,764	440,131	295,927
SMAs
Disaggregation of Revenue [Line Items]
Revenues	293,629	252,709	223,958
Advisory and other services
Disaggregation of Revenue [Line Items]
Revenues	74,491	67,061	60,057
Fund reimbursement revenues
Disaggregation of Revenue [Line Items]
Revenues	10,581	7,113	5,198
Income Based Incentive Fees
Disaggregation of Revenue [Line Items]
Revenues	22,800	8,000	1,400
Total incentive fees
Disaggregation of Revenue [Line Items]
Revenues	220,133	32,275	25,339
SMAs
Disaggregation of Revenue [Line Items]
Revenues	10,269	8,878	16,294
Focused commingled funds
Disaggregation of Revenue [Line Items]
Revenues	209,864	23,397	9,045
Carried Interest Allocations
Disaggregation of Revenue [Line Items]
Total carried interest allocations	708,294	301,200	176,309
Carried interest allocations, SMAs
Disaggregation of Revenue [Line Items]
Total carried interest allocations	351,506	171,801	142,411
Carried interest allocation, focused commingled funds
Disaggregation of Revenue [Line Items]
Total carried interest allocations	356,788	129,399	33,898
Legacy Greenspring Carried Interest Allocations
Disaggregation of Revenue [Line Items]
Total carried interest allocations	138,711	74,341	(75,157)
Legacy carried interest allocation, SMAs
Disaggregation of Revenue [Line Items]
Total carried interest allocations	989	37	1,029
Legacy carried interest allocation, focused comingled funds
Disaggregation of Revenue [Line Items]
Total carried interest allocations	137,722	74,304	(76,186)
Legacy gross carried interest allocation, focused comingled funds
Disaggregation of Revenue [Line Items]
Total carried interest allocations	$ 19,700	$ 63,100	$ 59,700