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Operating Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease payments	$ 2,900		$ 5,189
Rent expense		$ 800		$ 1,400
Bandwidth and colocation costs		$ 3,400		$ 6,400
Operating lease, not yet commenced, amount			$ 20,500
Real Estate Arrangements
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	5 years 6 months		5 years 6 months
Weighted discount rate	4.70%		4.70%
Co-Location Arrangements
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	2 years 3 months 18 days		2 years 3 months 18 days
Weighted discount rate	3.30%		3.30%
Minimum
Lessee, Lease, Description [Line Items]
Operating lease, not yet commenced, term	2 years		2 years
Maximum
Lessee, Lease, Description [Line Items]
Operating lease, not yet commenced, term	6 years		6 years

X

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a),(d))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

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+ References

No definition available.

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- Definition

Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Operating Lease, Lease Not Yet Commenced, Expense

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