Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 99,291	$ 74,513
Research tax credits	1,211	0
Deferred revenue	3,811	2,411
Accruals and other assets	2,714	628
Intangibles	14,751	0
Stock-based compensation	1,587	161
Gross deferred tax assets	123,365	77,713
Valuation allowance	(115,839)	(74,870)
Net deferred tax assets	7,526	2,843
Deferred tax liabilities:
Deferred contract acquisition costs	(6,516)	(3,756)
Acquired intangibles	(1,389)	0
Net deferred tax liabilities	$ (379)	$ (913)