Income Taxes - Schedule of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Mar. 31, 2022
Deferred tax assets:
Net operating loss carryforwards	$ 262,295	$ 248,856
Capitalized research and development expenses	33,709	0
Accruals and reserves	3,865	3,685
Stock-based compensation	18,065	10,000
Deferred revenue	11,498	6,865
Operating lease liabilities	21,474	20,590
Deferred Tax Assets, Other	332	19
Gross deferred tax assets	351,238	290,015
Valuation allowance	(322,104)	(261,795)
Total deferred tax assets	29,134	28,220
Deferred tax liabilities:
Prepaid expenses	(892)	(1,235)
Intangibles	(13,689)	(15,709)
Operating lease right-of-use assets	(14,117)	(13,233)
Property and equipment	(436)	(1,138)
Gross deferred tax liabilities	(29,134)	(31,315)
Net deferred taxes	$ 0	$ (3,095)