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Derivative Liabilities - Forward Purchase Agreement (Details) | 9 Months Ended
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Sep. 30, 2021 USD ($) $ / shares shares
Derivative Liabilities |
Forward Purchase Per Unit | $ / shares | $ 10.00
Forward purchase units | 5,000,000
Additional forward purchase units | 9,000,000
Forward purchase amount | $ | $ 14,000,000

X
- Definition Represents the maximum additional number of units that can be sold as per agreement. + References No definition available. + Details
Name: | motv_AgreementNumberOfMaximumAdditionalUnitsCanBeSold
Namespace Prefix: | motv_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition n/a + References No definition available. + Details
Name: | motv_DerivativeWarrantLiabilitiesAbstract
Namespace Prefix: | motv_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Forward Purchase Amount. + References No definition available. + Details
Name: | motv_ForwardPurchaseAmount
Namespace Prefix: | motv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Forward Purchase Per unit. + References No definition available. + Details
Name: | motv_ForwardPurchasePerUnit
Namespace Prefix: | motv_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Forward purchase shares. + References No definition available. + Details
Name: | motv_ForwardPurchaseShares
Namespace Prefix: | motv_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration