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BALANCE SHEET COMPONENTS (Tables)
 9 Months Ended
Apr. 30, 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
April 30, 2020
(in thousands)
Due within one year
$332,705  
Due in one to two years
137,101  
Total
$469,806  
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure
Prepaid expenses and other current assets consists of the following:
 As of
 July 31,
2019		April 30,
2020
(in thousands)
Prepaid operating expenses$37,864  $32,355  
VAT receivables5,068  8,181  
Tenant improvement allowance receivables—  8,056  
Prepaid income taxes19,690  1,477  
Other current assets12,043  13,120  
Total prepaid expenses and other current assets$74,665  $63,189  
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,
2019		April 30,
2020
(in months)(in thousands)
Computer, production, engineering and other equipment36$200,762  $235,429  
Demonstration units1259,981  66,149  
Leasehold improvements
(1)
46,520  65,056  
Furniture and fixtures6012,868  16,386  
Total property and equipment, gross320,131  383,020  
Less: accumulated depreciation (2)
(183,169) (233,332) 
Total property and equipment, net$136,962  $149,688  
(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. For additional information on this lease-related impairment, refer to Note 6.
Schedule of Finite-Lived Intangible Assets
Intangible assets, net consists of the following:
As of
July 31,
2019		April 30,
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
(21,210) (32,293) 
Accumulated amortization of customer relationships
(3,392) (4,562) 
Accumulated amortization of trade name
(955) (1,737) 
Total accumulated amortization
(25,557) (38,592) 
Total intangible assets, net
$66,773  $53,738  
Schedule of Indefinite-Lived Intangible Assets
Intangible assets, net consists of the following:
As of
July 31,
2019		April 30,
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
(21,210) (32,293) 
Accumulated amortization of customer relationships
(3,392) (4,562) 
Accumulated amortization of trade name
(955) (1,737) 
Total accumulated amortization
(25,557) (38,592) 
Total intangible assets, net
$66,773  $53,738  
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)
2020 (remaining three months)
$4,345  
2021
17,380  
2022
16,183  
2023
10,856  
2024
3,210  
Thereafter
1,764  
Total
$53,738  
Schedule of Accrued Liabilities
Accrued Compensation and Benefits
Accrued compensation and benefits consists of the following:
As of
July 31,
2019		April 30,
2020
(in thousands)
Accrued commissions
$31,703  $28,603  
Accrued vacation
15,475  21,424  
Payroll taxes payable
8,504  9,490  
Contributions to ESPP withheld20,778  6,608  
Accrued bonus
11,413  3,435  
Other
11,931  16,081  
Total accrued compensation and benefits
$99,804  $85,641