Operating Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Assets:
Operating lease right-of-use assets	$ 48,953	$ 17,260
Liabilities:
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Accrued expenses and other current liabilities	$ 1,552	$ 5,924
Operating lease liabilities, non-current	49,843	14,152
Total operating lease liabilities	$ 51,395	$ 20,076