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Goodwill and Intangible Assets, Net - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 01, 2020	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Oct. 01, 2019
Goodwill [Line Items]
Goodwill		$ 112,435,000	$ 112,435,000
Goodwill addition		0
Goodwill impairment	$ 0	0
Amortization expenses		5,650,000	5,650,000
Impairment of intangible assets		$ 40,700,000	$ 0	$ 0
Hedvig, Inc.
Goodwill [Line Items]
Goodwill					$ 112,435,000
Goodwill expected tax deductible amount					$ 0