Income Taxes - Components of the Company's Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Jan. 31, 2023	Jan. 31, 2022
Deferred tax assets:
Net operating losses	$ 216,642	$ 199,299
Research & development credits	34,406	25,725
Deferred revenue	18,124	10,691
Accruals and reserves	16,742	10,882
Stock-based compensation	11,706	2,445
Operating lease liabilities	6,589	7,490
Capitalized research & development expense	39,761	0
Total deferred tax assets	343,970	256,532
Less: valuation allowance	(328,786)	(240,584)
Deferred tax liabilities:
Depreciation and amortization	(390)	(177)
Operating lease right-of-use assets	(5,723)	(6,550)
Acquired intangible assets	(22,058)	(26,918)
Total deferred tax liabilities	(28,171)	(33,645)
Net deferred tax liabilities	$ (12,987)	$ (17,697)