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Amount of derivative financial liabilities forced converted to common shares.

No definition available.

Name:	vmar_ForcedConversionToCommonSharesDerivativeFinancialLiabilities
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Data Type:	xbrli:monetaryItemType
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Exercise price per share or per unit of warrants or rights outstanding.

No definition available.

Name:	vmar_IfrsClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
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Data Type:	dtr-types:perShareItemType
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Period Type:	instant

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

No definition available.

Name:	vmar_IfrsClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
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Number of shares issued for each share of convertible preferred stock that is converted.

No definition available.

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Number of shares issued during the period as a result of the conversion of convertible securities.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
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Data Type:	xbrli:sharesItemType
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Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodSharesIssuedForServices
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Data Type:	xbrli:sharesItemType
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Period Type:	duration

Number of new stock issued during the period.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodSharesNewIssues
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Data Type:	xbrli:sharesItemType
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Reduction in the number of shares during the period as a result of a reverse stock split.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodSharesReverseStockSplits
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Period Type:	duration

Value of stock issued in lieu of cash for services contributed to the entity. Value of the stock issued includes, but is not limited to, services contributed by vendors and founders.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodValueIssuedForServices
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Data Type:	xbrli:monetaryItemType
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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

No definition available.

Name:	vmar_IfrsStockIssuedDuringPeriodValueNewIssues
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Data Type:	xbrli:monetaryItemType
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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

No definition available.

Name:	vmar_IfrsStockholdersEquityNoteStockSplitConversionRatio
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Data Type:	xbrli:pureItemType
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Period Type:	duration

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

No definition available.

Name:	vmar_IfrsWarrantsAndRightsOutstandingTerm
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Data Type:	xbrli:durationItemType
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The increase (decrease) in equity resulting from the conversion of convertible warrants.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Represents the initial recognition of derivative liabilities in non-cash financing and investing activities.

No definition available.

Name:	vmar_InitialRecognitionOfDerivativeLiabilities
Namespace Prefix:	vmar_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Represents the number of reverse stock splits.

No definition available.

Name:	vmar_NumberOfReverseStockSplits
Namespace Prefix:	vmar_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Number of warrants issued to purchase common shares.

No definition available.

Name:	vmar_NumberOfWarrantsIssuedToPurchaseCommonShares
Namespace Prefix:	vmar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of shares of preferred stock converted during the period.

No definition available.

Name:	vmar_PreferredStockConvertibleSharesConverted
Namespace Prefix:	vmar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents the proceeds from capital raise receivable from placement agent.

No definition available.

Name:	vmar_ProceedsFromCapitalRaiseReceivableFromPlacementAgent
Namespace Prefix:	vmar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The increase (decrease) in number of shares in equity resulting from the conversion of pre-funded warrants.

No definition available.

Name:	vmar_StockIssuedDuringPeriodSharesConversionOfPreFundedWarrantsEquity
Namespace Prefix:	vmar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of shares issued upon exchange of warrants.

No definition available.

Name:	vmar_StockIssuedDuringPeriodSharesExchangeOfWarrants
Namespace Prefix:	vmar_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Amount of value of shares converted from the conversion of Pre-Funded Warrants.

No definition available.

Name:	vmar_StockIssuedDuringPeriodValueSharesConversionOfPreFundedWarrantsEquity
Namespace Prefix:	vmar_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The amount of transaction cost net related to the issuance of stock.

No definition available.

Name:	vmar_TransactionCostNetRelatedToIssuanceOfStock
Namespace Prefix:	vmar_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	vmar_IfrsSaleOfStockAxis=vmar_AtMarketOfferingMember
Namespace Prefix:
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Balance Type:
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Name:	vmar_IfrsSaleOfStockAxis=vmar_IfrsPrivatePlacementMember
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Data Type:	na
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Name:	ifrs-full_ClassesOfShareCapitalAxis=vmar_PreFundedWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	ifrs-full_ClassesOfFinancialInstrumentsAxis=ifrs-full_DerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
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