Fair Value Measurements - Valuation Methodologies (Details) $ in Thousands	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 16,591	$ 19,820
Private equity funds
Schedule of Equity Method Investments [Line Items]
Fair Value	6,404
Direct credit investments
Schedule of Equity Method Investments [Line Items]
Fair Value	773
Direct equity investments
Schedule of Equity Method Investments [Line Items]
Fair Value	$ 5,754
Selected market return | Adjusted net asset value | Minimum | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	(0.063)
Selected market return | Adjusted net asset value | Maximum | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	(0.092)
Selected market return | Adjusted net asset value | Weighted Average | Private equity funds
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	(0.086)
Market yield | Discounted cash flow | Minimum | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.125
Market yield | Discounted cash flow | Maximum | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.125
Market yield | Discounted cash flow | Weighted Average | Direct credit investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	0.125
EBITDA multiple | Market approach | Minimum | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	8.00
EBITDA multiple | Market approach | Maximum | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	13.50
EBITDA multiple | Market approach | Weighted Average | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	10.59
Equity multiple | Market approach | Weighted Average | Direct equity investments
Schedule of Equity Method Investments [Line Items]
Range of and weighted-average inputs	1.58