Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Deferred tax assets:
Accruals and reserves	$ 7,068	$ 13,494
Capitalized expenditures	10,477	0
Stock-based compensation	16,615	11,486
Net operating loss carryforward	21,850	29,318
Tax credit carryforward	34,725	29,624
Lease liabilities	13,813	15,932
Other	2,955	977
Gross deferred tax assets	107,503	100,831
Valuation allowance	(48,484)	(31,318)
Total deferred tax assets	59,019	69,513
Deferred tax liabilities:
Intangible assets	(31,200)	(30,253)
Lease right-of-use assets	(12,497)	(14,438)
Deferred costs	(10,552)	(11,481)
Other	(1,889)	(1,076)
Total deferred tax liabilities	(56,138)	(57,248)
Net deferred tax assets	$ 2,881	$ 12,265