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Fair Value Measurements - Narrative (Details)	3 Months Ended
	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Changes in fair value hierarchy levels	$ 0	$ 0
Partnership and LLC interests	158,222,000		$ 131,858,000
Fair Value Measured at Net Asset Value Per Share
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Partnership and LLC interests	141,800,000		118,200,000
Level III
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Partnership and LLC interests	$ 16,500,000		$ 13,700,000
Measurement Input, Discount Rate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business combination, contingent consideration, liability, measurement input	0.07

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