Income Taxes - Components of the Company's Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Jan. 31, 2026	Jan. 31, 2025
Deferred tax assets:
Net operating losses	$ 304,482	$ 278,637
Research & development credits	45,207	44,047
Deferred revenue	28,649	33,188
Accruals and reserves	18,307	20,377
Stock-based compensation	2,732	3,860
Operating lease liabilities	3,953	5,024
Capitalized research & development expense	71,713	78,632
Interest expense limitation	12,340	8,550
Inventory reserves	13,022	15,350
Debt book-tax basis difference	19,339	0
UNICAP adjustment	9,243	8,850
Depreciation and amortization	296	0
Total deferred tax assets	529,283	496,515
Less: valuation allowance	(523,065)	(486,356)
Deferred tax liabilities:
Depreciation and amortization	0	(345)
Operating lease right-of-use assets	(2,905)	(3,706)
Acquired intangible assets	(14,229)	(15,598)
Deferred commission	(1,933)	(2,347)
Other	(189)	0
Total deferred tax liabilities	(19,256)	(21,996)
Net deferred tax liabilities	$ (13,038)	$ (11,837)

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