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Related Party Balances and Transactions (Details) - Schedule of Amount due From Related Party - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Amount due from related party:
Ochem	[1]		$ 1,856
Total			$ 1,856
[1] The balance represents advance payment for materials purchased from Ochem.

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- Definition

Amount Due From Related Party.

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No definition available.

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Namespace Prefix:	mvst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- Definition

Due from related parties total amount.

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No definition available.

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Namespace Prefix:	mvst_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration