Restructuring and Severance Charges - Summary of Accrued Restructuring and Severance Costs (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Oct. 31, 2021	Aug. 01, 2021	May 02, 2021	Jan. 31, 2021	Nov. 01, 2020	Aug. 02, 2020	May 03, 2020	Feb. 02, 2020	Oct. 31, 2021	Nov. 01, 2020
Restructuring Reserve [Roll Forward]
Balance, end of previous year				$ 212				$ 3,845	$ 212	$ 3,845
Cease use liabilities transferred to ROU assets									0	(1,964)
Charged to expense	$ 1,123	$ 489	$ 595	$ 632	$ 438	$ 546	$ 411	$ 1,246	2,839	2,641
Cash payments									(2,502)	(4,310)
Ending Balance	$ 549				$ 212				$ 549	$ 212

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585

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- Definition

Amount, after cash payment, of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Restructuring Reserve, Transfer to Right-of-Use Asset

+ References

No definition available.

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Namespace Prefix:	visi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration