Income Taxes - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Deferred tax assets:
Net operating loss carryover	$ 243,820	$ 253,561
Accruals and reserves	7,822	10,187
Stock-based compensation	11,465	15,930
Section 59(e) capitalized research and development	19,485
Depreciation and amortization	6,618	6,288
Operating lease liabilities	59,455	62,698
Tax credit carryover	4,325	4,325
Deferred business interest expense		1,061
Other	1,213	1,904
Total deferred tax assets	354,203	355,954
Valuation allowance	(286,659)	(301,757)
Total deferred tax assets, net of valuation allowance	67,544	54,197
Deferred tax liabilities:
Operating lease right-of-use assets, net	(47,949)	(49,966)
Convertible debt	(17,322)
Deferred commissions		(2,433)
Goodwill with indefinite life amortization	(525)	(424)
Other		(28)
Total deferred tax liabilities	(65,796)	(52,851)
Net deferred tax assets	$ 1,748	$ 1,346