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Commitments and Contingencies (Details) | Jun. 30, 2018 USD ($)
--- | ---
Future Minimum Sublease Rental Payments [Line Items] |
2018 | $ 97,000
2019 | 233,000
2020 | 265,000
2021 | 227,000
Future Minimum Sublease Expenses, Total | $ 822,000

X
- Definition Amount of minimum sublease rentals, total payable. + References No definition available. + Details
Name: | mven_FutureMinimumSubleaseExpensesTotal
Namespace Prefix: | mven_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount of minimum sublease rentals paid in the fiscal year. + References No definition available. + Details
Name: | mven_FutureMinimumSubleaseRentalsNextTwelveMonths
Namespace Prefix: | mven_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals paid in the fiscal year. + References No definition available. + Details
Name: | mven_FutureMinimumSubleaseRentalsWithinFourYears
Namespace Prefix: | mven_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals paid in the fiscal year. + References No definition available. + Details
Name: | mven_FutureMinimumSubleaseRentalsWithinThreeYears
Namespace Prefix: | mven_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of minimum sublease rentals paid in the fiscal year. + References No definition available. + Details
Name: | mven_FutureMinimumSubleaseRentalsWithinTwoYears
Namespace Prefix: | mven_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant