Organization and Significant Accounting Policies - Payables to Related Parties Pursuant to the Tax Receivable Agreement (Details)	12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]
Percentage of tax benefits paid	85.00%
Percentage of tax benefits unpaid	15.00%

Tax Receivable Agreement, Percentage Of Tax Benefits Unpaid

No definition available.

Name:	mrvi_TaxReceivableAgreementPercentageOfTaxBenefitsUnpaid
Namespace Prefix:	mrvi_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration