Income Taxes - Schedule of loss before provision for (benefit from) income taxes (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Income Tax Disclosure [Abstract]
Domestic	$ (42,026)	$ (35,770)
Loss before provision for (benefit from) income taxes	$ (42,026)	$ (35,770)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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