Balance Sheet Components

9 Months Ended

Oct. 31, 2021

Balance Sheet Components Disclosure [Abstract]

Inventory

Inventory consists of the following (in thousands):


	At the End of
	Fiscal 2021		Third Quarter of Fiscal 2022
Raw materials	$	4,991	$	10,609
Finished goods	41,742		33,427
Inventory	$	46,733	$	44,036

Property and Equipment, Net

Property and equipment, net consists of the following (in thousands):


	At the End of
	Fiscal 2021		Third Quarter of Fiscal 2022
Test equipment	$	238,069	$	265,005
Computer equipment and software	184,518		210,503
Furniture and fixtures	8,484		8,534
Leasehold improvements	44,444		46,536
Total property and equipment	475,515		530,578
Less: accumulated depreciation and amortization	(312,474)		(337,437)
Property and equipment, net	$	163,041	$	193,141

Depreciation and amortization expense related to property and equipment was $14.9 million and $17.5 million for the third quarter of fiscal 2021 and 2022, and $41.1 million and $47.2 million for the first three quarters of fiscal 2021 and 2022. The amount of internal-use software development costs capitalized and related amortization expense during the third quarter and first three quarters of fiscal 2021 and 2022 were not material.

Intangible Assets, Net

Intangible assets, net consist of the following (in thousands):


	At the End of
	Fiscal 2021						Third Quarter of Fiscal 2022
	Gross Carrying Value		Accumulated Amortization		Net Carrying Amount		Gross Carrying Value		Accumulated Amortization		Net Carrying Amount
Technology patents	$	19,125	$	(11,722)	$	7,403	$	19,125	$	(13,232)	$	5,893
Developed technology	77,373		(17,499)		59,874		80,166		(26,841)		53,325
Customer relationships	6,459		(308)		6,151		6,459		(1,000)		5,459
Trade name	3,623		(403)		3,220		3,623		(1,308)		2,315
Intangible assets, net	$	106,580	$	(29,932)	$	76,648	$	109,373	$	(42,381)	$	66,992

Intangible assets amortization expense was $3.3 million and $4.0 million for the third quarter of fiscal 2021 and 2022, and $8.7 million and $12.4 million for the first three quarters of fiscal 2021 and 2022. At the end of the third quarter of fiscal 2022, the weighted-average remaining amortization period was 2.2 years for technology patents, 4.2 years for developed technology, 5.9 years for customer relationships, and 1.9 years for trade name. We recorded amortization of technology patents in general and administrative expenses due to their defensive nature, developed technology in cost of product revenue, and customer relationships and trade name in sales and marketing expenses in the condensed consolidated statements of operations.

At the end of the third quarter of fiscal 2022, future expected amortization expense for intangible assets is as follows (in thousands):


Fiscal Years Ending	Estimated Future Amortization Expense
Remainder of 2022	$	4,061
2023	16,244
2024	15,841
2025	15,036
2026	12,483
Thereafter	3,327
Total	$	66,992

Goodwill

As of the end of fiscal 2021 and the third quarter of fiscal 2022, goodwill was $358.7 million. There were no impairments to goodwill during the third quarter and first three quarters of fiscal 2021 and 2022.

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consist of the following (in thousands):


	At the End of
	Fiscal 2021		Third Quarter of Fiscal 2022
Taxes payable	$	4,097	$	2,339
Accrued marketing	15,638		10,072
Accrued travel and entertainment expenses	866		1,609
Acquisition consideration	9,600		3,465
Contract liabilities from contracts with customers	—		18,802
Other accrued liabilities	31,553		37,597
Total accrued expenses and other liabilities	$	61,754	$	73,884