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PRODUCT WARRANTY - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($)
Product Warranties Disclosures [Abstract] |
Warrants expense | $ 46,485

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- Definition Warrants Expense + References No definition available. + Details
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Namespace Prefix: | mvst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_ProductWarrantiesDisclosuresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration