RELATED PARTY BALANCES AND TRANSACTIONS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Related Party Transactions [Abstract]
Loans from related parties, accumulative amount	$ 8,426	$ 4,184	$ 0	$ 0
Outstanding balance due from related party	$ 0		$ 0		$ 85

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.

No definition available.

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