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Accounts Receivable (Details) - Schedule of allowance for doubtful accounts - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Schedule of allowance for doubtful accounts [Abstract] |  |
Beginning balance | $ 5,537 | $ 10,111
Charge to expenses | (240) | (4,250)
Write off | (493) | (233)
Exchange difference | 243 | (91)
Ending balance | $ 5,047 | $ 5,537

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- Definition Accounts receivable Write off. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Amount of increase (decrease) in allowance for credit loss on accounts receivable. + References No definition available. + Details
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Namespace Prefix: | mvst_
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- Definition Charge to expenses. + References No definition available. + Details
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Namespace Prefix: | mvst_
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Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
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- Definition Amount of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant