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v3.22.1

Related Party Balances and Transactions (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Related Party Transactions [Abstract] |  |  |  |  |
Interest-free loans from related parties accumulative amounts | $ 0 | $ 1,874,000 | $ 8,426,000 | $ 18,889,000 | $ 15,142,000
Outstanding due from ochem | $ 0 |  | $ 85,000 |  |

X
- Definition Accumulated amount of interest-free loans from related parties. + References No definition available. + Details
Name: | mvst_LoansFromRelatedParties
Namespace Prefix: | mvst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth. + References No definition available. + Details
Name: | mvst_OutstandingBalanceDueFromRelatedParty
Namespace Prefix: | mvst_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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