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BALANCE SHEET COMPONENTS (Tables)
 3 Months Ended
Oct. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Investments in Marketable Debt Securities, by Contractual Maturity Date
The following table summarizes the estimated fair value of our investments in marketable debt securities by their contractual maturity dates:
As of
October 31, 2020
(in thousands)
Due within one year
$631,457 
Due in one to two years
182,146 
Total
$813,603 
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure
Prepaid expenses and other current assets consists of the following:
 As of
 July 31,
2020		October 31,
2020
(in thousands)
Prepaid operating expenses$31,690 $32,682 
VAT receivables8,381 8,497 
Tenant improvement allowance receivables8,557 — 
Other current assets14,404 15,540 
Total prepaid expenses and other current assets$63,032 $56,719 
Schedule of Property, Plant and Equipment
Property and Equipment, Net
Property and equipment, net consists of the following:
Estimated
Useful Life		As of
July 31,
2020		October 31,
2020
(in months)(in thousands)
Computer, production, engineering and other equipment36$245,245 $253,389 
Demonstration units1266,569 66,750 
Leasehold improvements
(1)
65,557 62,142 
Furniture and fixtures6017,026 16,050 
Total property and equipment, gross394,397 398,331 
Less: accumulated depreciation (2)
(251,225)(265,175)
Total property and equipment, net$143,172 $133,156 
(1)Leasehold improvements are amortized over the shorter of the estimated useful lives of the improvements or the remaining lease term.
(2)Includes a $1.2 million write-off related to the impairment of certain leasehold improvements for the fiscal quarter ended January 31, 2020 and a $0.9 million write-off related to the impairment of certain leasehold improvements for the fiscal quarter ended October 31, 2020. For additional information on these lease-related impairments, refer to Note 6.
Schedule of Finite-Lived Intangible Assets
Intangible assets, net consists of the following:
As of
July 31,
2020		October 31,
2020
(in thousands)
Developed technology
$79,300 $79,300 
Customer relationships
8,860 8,860 
Trade name
4,170 4,170 
Total intangible assets, gross
92,330 92,330 
Less:
Accumulated amortization of developed technology
(35,987)(39,681)
Accumulated amortization of customer relationships
(4,953)(5,343)
Accumulated amortization of trade name
(1,998)(2,259)
Total accumulated amortization
(42,938)(47,283)
Total intangible assets, net
$49,392 $45,047 
Schedule of Indefinite-Lived Intangible Assets
Intangible assets, net consists of the following:
As of
July 31,
2020		October 31,
2020
(in thousands)
Developed technology
$79,300 $79,300 
Customer relationships
8,860 8,860 
Trade name
4,170 4,170 
Total intangible assets, gross
92,330 92,330 
Less:
Accumulated amortization of developed technology
(35,987)(39,681)
Accumulated amortization of customer relationships
(4,953)(5,343)
Accumulated amortization of trade name
(1,998)(2,259)
Total accumulated amortization
(42,938)(47,283)
Total intangible assets, net
$49,392 $45,047 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The estimated future amortization expense of our intangible assets is as follows:
Fiscal Year Ending July 31:Amount
(in thousands)
2021
$13,035 
2022
16,183 
2023
10,856 
2024
3,210 
2025
1,763 
Total
$45,047 
Schedule of Accrued Liabilities
Accrued Compensation and Benefits
Accrued compensation and benefits consists of the following:
As of
July 31,
2020		October 31,
2020
(in thousands)
Accrued commissions
$33,503 $39,489 
Accrued vacation
24,006 26,022 
Payroll taxes payable
10,742 13,466 
Contributions to ESPP withheld
16,563 10,810 
Accrued benefits8,426 9,343 
Accrued bonus
5,568 6,666 
Other
10,301 9,929 
Total accrued compensation and benefits
$109,109 $115,725