XML 139 R129.htm IDEA: XBRL DOCUMENT
v3.21.4

Recasting Financial Statements Upon the Completion of the Merger Transaction (Details) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 23, 2021 | Sep. 30, 2021 | Dec. 31, 2020 | Feb. 28, 2021 | Jan. 31, 2021
Recasting Financial Statements Upon the Completion of the Merger Transaction (Details) [Line Items] |  |  |  |  |
Common exchange ratio (in Dollars per share) |  | $ 160.3 | $ 160.3 |  |
Subsequent Event [Member] |  |  |  |  |
Recasting Financial Statements Upon the Completion of the Merger Transaction (Details) [Line Items] |  |  |  |  |
Net proceeds including cash received | $ 708.4 |  |  |  |
Promissory convertible notes issued |  |  |  | $ 57.5 | $ 57.5

X
- Definition Common exchange ratio. + References No definition available. + Details
Name: | mvst_CommonExchangeRatio
Namespace Prefix: | mvst_
Data Type: | dtr:perShareItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Amount of long-term notes classified as other, payable after one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_OtherLongTermNotesPayable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of cash inflow from debt classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromOtherDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |