Business Combinations - Narrative (Details) - USD ($) $ in Thousands						1 Months Ended	12 Months Ended
	Jun. 17, 2022	Jun. 01, 2021	Apr. 15, 2021	May 22, 2020	Apr. 16, 2020	Nov. 30, 2021	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Business Acquisition [Line Items]
Goodwill							$ 78,547	$ 58,977
Developed technology
Business Acquisition [Line Items]
Acquired intangible assets							$ 8,700
Developed technology, estimated useful life							5 years	4 years
Customer relationships
Business Acquisition [Line Items]
Developed technology, estimated useful life								4 years 6 months
ShiftRight, Inc.
Business Acquisition [Line Items]
Payments to acquire businesses, cash	$ 25,600
Goodwill	18,724
Acquisition related costs							$ 700
Deferred tax liability	682
ShiftRight, Inc. | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets	$ 7,100
Developed technology, estimated useful life	5 years
Smokescreen
Business Acquisition [Line Items]
Payments to acquire businesses, cash		$ 11,700
Goodwill		5,686
Acquisition related costs								$ 500
Deferred tax liability		1,558
Smokescreen | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets		$ 5,600
Developed technology, estimated useful life		5 years
Smokescreen | Customer relationships
Business Acquisition [Line Items]
Acquired intangible assets		$ 2,100
Developed technology, estimated useful life		5 years
Trustdome
Business Acquisition [Line Items]
Payments to acquire businesses, cash			$ 31,100
Goodwill			23,232
Acquisition related costs								$ 400
Deferred tax liability			624
Trustdome | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets			$ 7,200
Developed technology, estimated useful life			5 years
Edgewise Networks
Business Acquisition [Line Items]
Payments to acquire businesses, cash				$ 30,700
Goodwill				16,709
Acquisition related costs									$ 600
Deferred tax liability				620
Edgewise Networks | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets				$ 13,900
Developed technology, estimated useful life				5 years
Edgewise Networks | Customer relationships
Business Acquisition [Line Items]
Acquired intangible assets				$ 1,300
Developed technology, estimated useful life				5 years
Cloudneeti
Business Acquisition [Line Items]
Payments to acquire businesses, cash					$ 8,900
Goodwill					5,871
Acquisition related costs									$ 500
Deferred tax liability					490
Cloudneeti | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets					$ 3,500
Developed technology, estimated useful life					5 years
Business Acquisition, November 2021
Business Acquisition [Line Items]
Payments to acquire businesses, cash						$ 400
Goodwill						800
Deferred tax liability						400
Purchase price						2,100
Fair value of shares issued						1,700
Business Acquisition, November 2021 | Developed technology
Business Acquisition [Line Items]
Acquired intangible assets						$ 1,600
Developed technology, estimated useful life						5 years