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Related Party Transactions - Additional Information (Detail) - Lessee Company Where Ceo of the Lessor Company is the Member of Board of Directors [Member] $ in Thousands		9 Months Ended
	Dec. 07, 2018 ft²	Sep. 30, 2021	Sep. 30, 2020 USD ($)	Apr. 01, 2019 ft²
Related Party Transaction [Line Items]
Area of space subleased	400
Revised area of space subleased				3,700
Sublease lease term extension		2 years
Percentage of profit arising on sublease due to excess amount collected from subtenant to be shared				50.00%
Operating lease rental expense sublease rentals | $			$ 160

X

- Definition

The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=123403562&loc=d3e38371-112697

+ Details

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

X

- Definition

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.

+ References

No definition available.

+ Details

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

X

- Definition

Area of space subleased.

+ References

No definition available.

+ Details

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Namespace Prefix:	vera_
Data Type:	dtr-types:areaItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Extended sublease term.

+ References

No definition available.

+ Details

Name:	vera_ExtendedSubleaseTerm
Namespace Prefix:	vera_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage Of Profit Arising On Sublease On Account Of Excess Amount Collected From Subtenant To Be Shared Percentage of profit arising on sublease on account of excess amount collected from subtenant to be shared.

+ References

No definition available.

+ Details

Name:	vera_PercentageOfProfitArisingOnSubleaseOnAccountOfExcessAmountCollectedFromSubtenantToBeShared
Namespace Prefix:	vera_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Revised area of space subleased

+ References

No definition available.

+ Details

Name:	vera_RevisedAreaOfSpaceSubleased
Namespace Prefix:	vera_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: