Subsequent Events (Details) $ in Thousands				3 Months Ended			6 Months Ended
	Oct. 16, 2024 shares	Oct. 07, 2024	Aug. 26, 2024	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Oct. 29, 2024 independent_director	Mar. 31, 2024 shares
Subsequent Event [Line Items]
Percentage of total voting power of outstanding stock			67.00%
Restructuring and other charges					$ 2,242	$ 2,654	$ 2,242	$ 6,871
Employee Severance
Subsequent Event [Line Items]
Restructuring and other charges					$ 1,900	$ 2,700	$ 1,900	$ 6,300
Subsequent Event
Subsequent Event [Line Items]
Reverse stock split	0.05	0.05
Number of independent directors appointed | independent_director									3
Subsequent Event | Forecast | November Reduction In Force
Subsequent Event [Line Items]
Restructuring and other charges				$ 11,700
Subsequent Event | Forecast | November Reduction In Force | Employee Severance
Subsequent Event [Line Items]
Restructuring and other charges				9,300
Subsequent Event | Forecast | November Reduction In Force | Equity Compensation Charges
Subsequent Event [Line Items]
Restructuring and other charges				$ 2,400
Class A Common Stock
Subsequent Event [Line Items]
Common stock, shares authorized (in shares) | shares					1,140,000,000		1,140,000,000			1,140,000,000
Class A Common Stock | Subsequent Event
Subsequent Event [Line Items]
Common stock, shares authorized (in shares) | shares	1,140,000,000
Class B Common Stock
Subsequent Event [Line Items]
Common stock, shares authorized (in shares) | shares					350,000,000		350,000,000			350,000,000
Class B Common Stock | Subsequent Event
Subsequent Event [Line Items]
Common stock, shares authorized (in shares) | shares	350,000,000
Minimum
Subsequent Event [Line Items]
Reverse stock split			0.200
Maximum
Subsequent Event [Line Items]
Reverse stock split			0.0333