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Statutory Reserves and Restricted Net Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Statutory Reserves and Restricted Net Assets [Abstract] |  |
Reserve percentage | 10.00% |
Restricted net asset | $ 156,333 | $ 156,333

X
- Definition Reserve percentage. + References No definition available. + Details
Name: | mvst_ReservePercentage
Namespace Prefix: | mvst_
Data Type: | dtr:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Restricted Net Asset. + References No definition available. + Details
Name: | mvst_RestrictedNetAsset
Namespace Prefix: | mvst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | mvst_StatutoryReservesandRestrictedNetAssetsDetailsLineItems
Namespace Prefix: | mvst_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration