Business Combinations - Purchase Price Allocation (Details) - USD ($) $ in Thousands	May 02, 2020	Nov. 02, 2019
Business Acquisition [Line Items]
Goodwill	$ 310,269	$ 297,937
Centina Systems, Inc.
Business Acquisition [Line Items]
Cash and cash equivalents		5,718
Accounts receivable		610
Prepaid expenses and other		536
Equipment, furniture and fixtures		17
Goodwill		13,055
Accounts payable		(47)
Accrued liabilities		(286)
Deferred revenue		(1,493)
Deferred tax liability		(6,692)
Total purchase consideration		34,018
Customer relationships and contracts \| Centina Systems, Inc.
Business Acquisition [Line Items]
Intangible assets		400
Developed technology \| Centina Systems, Inc.
Business Acquisition [Line Items]
Intangible assets		$ 22,200

Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Liabilities

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of deferred revenue expected to be recognized as such within one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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