Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Percentage of voting equity interests acquired at the acquisition date in the business combination.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

Name:	us-gaap_PaymentsToAcquireBusinessesGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the ownership percentage of diluted shares outstanding.

No definition available.

Name:	vrtu_DilutedSharesOwnershipInterestPercentage
Namespace Prefix:	vrtu_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Price per share of stock in a delisting offer to purchase noncontrolling interest shares of the subsidiary.

No definition available.

Name:	vrtu_ExitPriceInDelistingOffer
Namespace Prefix:	vrtu_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Maximum period allowed for public shareholders to tender subsidiary shares at the delisting price to the reporting entity following delisting of the subsidiary, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	vrtu_MaximumPeriodForPublicShareholdersToTenderSharesAfterDelisting
Namespace Prefix:	vrtu_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of expected cash outflow to a noncontrolling interest for settlement of a delisting offer.

No definition available.