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Business Combinations (Details) - USD ($) |  |  |  | 12 Months Ended | 13 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 02, 2019 | Oct. 01, 2018 | Jul. 02, 2018 | Oct. 31, 2020 | Nov. 02, 2019 | Nov. 03, 2018 | Oct. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisition-related costs |  |  |  | $ 4,031,000 | $ 3,370,000 | $ 5,111,000 |
Contingent consideration agreement term |  |  |  |  | 3 years |  |
Contingent consideration | $ 4,372,000 |  |  | 0 | $ 4,372,000 |  |
Centina Systems, Inc. |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payment to acquire business | $ 34,000,000.0 |  |  |  |  |  |
Acquisition-related costs |  |  |  | 800,000 |  |  |
Centina Systems, Inc. | Customer relationships and contracts |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life | 2 years |  |  |  |  |  |
Centina Systems, Inc. | Developed technology |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life | 5 years |  |  |  |  |  |
DonRiver |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payment to acquire business |  | $ 43,283,000 |  |  |  |  |
Acquisition-related costs |  |  |  | 6,900,000 | 7,500,000 | 3,500,000 |
Undiscounted contingent consideration, maximum |  | $ 28,500,000 |  |  |  |  |
Contingent consideration agreement term |  | 3 years |  |  |  |  |
Contingent consideration revenue measurement term |  | 25 months |  |  |  |  |
Change in contingent consideration |  |  |  | (3,700,000) |  |  | $ (2,800,000)
Contingent consideration | $ 8,100,000 | $ 10,900,000 |  | 0 | 8,100,000 |  |
Contingent consideration paid |  |  |  | 4,400,000 |  |  |
DonRiver | Customer relationships and contracts |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  | 7 years |  |  |  |  |
DonRiver | Developed technology |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  | 7 years |  |  |  |  |
Packet Design |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Payment to acquire business |  |  | $ 41,100,000 |  |  |  |
Acquisition-related costs |  |  |  |  |  | 1,600,000 |
Packet Design | Customer relationships and contracts |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  |  | 3 years |  |  |  |
Packet Design | Developed technology |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets, useful life |  |  | 5 years |  |  |  |
Contingent Consideration | DonRiver |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Undiscounted contingent consideration, maximum |  | $ 15,000,000.0 |  |  |  |  |
Undiscounted contingent consideration, minimum |  | 0.0 |  |  |  |  |
Contingent Compensation | DonRiver |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Undiscounted contingent consideration, maximum |  | 13,500,000 |  |  |  |  |
Undiscounted contingent consideration, minimum |  | $ 0.0 |  |  |  |  |
Change in contingent consideration |  |  |  | $ 6,900,000 | $ 5,100,000 | $ 400,000 |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479 + Details
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- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability exceeding amount recognized at acquisition date. Includes, but is not limited to, measurement period adjustment and less amount paid soon after acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (ee) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585 + Details
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