0000950170-21-004117 | 10-Q | XBRL Viewer

License and Collaborations - Additional Information (Detail) - USD ($) $ in Thousands			9 Months Ended	12 Months Ended
	Oct. 31, 2020	Dec. 31, 2019	Sep. 30, 2021	Dec. 31, 2020
License and Collaborations [Line Items]
Reimbursement for patent related expenses		$ 45
Yale License Agreement [Member]
License and Collaborations [Line Items]
Initial fee paid as consideration		37
Ares Agreement [Member]
License and Collaborations [Line Items]
Temporary equity stock shares issued during the period shares	22,171,553
Milestone payments paid				$ 25,000
Non-refundable license issue fee				13,121
Milestone payments recorded to research and development expense				25,000
Payment for royalties on a licensed product, Term			2 years
Ares Agreement [Member] \| Achievement Of Specified BLA Filing Or Regulatory Approval Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable				$ 176,500
Ares Agreement [Member] \| Achievement Of Specified Commercial Milestones [Member]
License and Collaborations [Line Items]
Milestone payments payable		$ 515,000

Label	Element	Value
Temporary Equity Shares Issued During The Period Shares	vera_TemporaryEquitySharesIssuedDuringThePeriodShares	135,180,800
Temporary Equity Shares Issued During The Period Shares	vera_TemporaryEquitySharesIssuedDuringThePeriodShares	22,171,553
Share Based Compensation By Share Based Payment Award Non Vested Options Outstanding Aggregate Intrinsic Value	vera_ShareBasedCompensationByShareBasedPaymentAwardNonVestedOptionsOutstandingAggregateIntrinsicValue	$ 8,000
Share Based Compensation By Share Based Payment Award Non Vested Options Outstanding Aggregate Intrinsic Value	vera_ShareBasedCompensationByShareBasedPaymentAwardNonVestedOptionsOutstandingAggregateIntrinsicValue	34,521,000
Change In Fair Value Of Convertible Notes	vera_ChangeInFairValueOfConvertibleNotes	359,000
Change In Fair Value Of Convertible Notes	vera_ChangeInFairValueOfConvertibleNotes	$ 775,000
Common Stock Capital Shares Minimum Increase In Shares Reserved For Future Issuance	vera_CommonStockCapitalSharesMinimumIncreaseInSharesReservedForFutureIssuance	440,502
Investment Owned Number Of Shares Placed In Escrow Account	vera_InvestmentOwnedNumberOfSharesPlacedInEscrowAccount	162,260
Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Remainder Of Year Five	vera_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderOfYearFive	$ 1,569,000
Impairment Loss On Property And Equipment And Intangible Asset	vera_ImpairmentLossOnPropertyAndEquipmentAndIntangibleAsset	1,185,000
Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Remainder Of Year Four	vera_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderOfYearFour	2,029,000
Underwriting Discounts and Commissions	vera_UnderwritingDiscountsAndCommissions	$ 3,852,000
Revised area of space subleased	vera_RevisedAreaOfSpaceSubleased	3,700
Offering costs	vera_OfferingCosts	$ 2,765,000
Accrued Liabilities And Other Liabilities Non Current	vera_AccruedLiabilitiesAndOtherLiabilitiesNonCurrent	286,000
Accrued Liabilities And Other Liabilities Non Current	vera_AccruedLiabilitiesAndOtherLiabilitiesNonCurrent	286,000
Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Remainder Of Year Two	vera_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderOfYearTwo	1,901,000
NonMarketable Equity Securities Received As Partial Proceeds From Sale Of Pnai Technology	vera_NonmarketableEquitySecuritiesReceivedAsPartialProceedsFromSaleOfPnaiTechnology	$ 1,759,000
Share Based Compensation By Share Based Payment Arrangement Options Non Vested Weighted Average Remaining Contractual Term	vera_ShareBasedCompensationByShareBasedPaymentArrangementOptionsNonVestedWeightedAverageRemainingContractualTerm	9 years 9 months 14 days
Share Based Compensation By Share Based Payment Arrangement Options Non Vested Weighted Average Remaining Contractual Term	vera_ShareBasedCompensationByShareBasedPaymentArrangementOptionsNonVestedWeightedAverageRemainingContractualTerm	9 years 4 months 6 days
Lease Assignment	vera_LeaseAssignment	$ 136,000
Extended Sublease Term	vera_ExtendedSubleaseTerm	2 years
Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Remainder Of Year Three	vera_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderOfYearThree	$ 1,964,000
Disposal Group Including Discontinued Operation Shares Received On Disposal	vera_DisposalGroupIncludingDiscontinuedOperationSharesReceivedOnDisposal	308,635
Share based Compensation Arrangement By Share based Payment Award Restricted Shares Of Fully Issued And Outstanding Common Stock	vera_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedSharesOfFullyIssuedAndOutstandingCommonStock	49,636
Gain On Issuance Of Convertible Notes	vera_GainOnissuanceOfConvertibleNotes	$ 63,000
Convertible Notes Issuance Costs	vera_ConvertibleNotesIssuanceCosts	24,000
Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Remainder Of Fiscal Year	vera_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsRemainderOfFiscalYear	$ 462,000

Other Financial Statement Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Other Financial Statement Information [Abstract]
Prepaid contract costs	$ 889
Receivables on exercise of options		$ 52

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Notes Details Other Financial Statement Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) License and Collaborations - Additional Information (Detail) Uncategorized Uncategorized Items - vera-20210930_htm.xml All Reports