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Commitments and Contingencies (Details)	Mar. 31, 2018 USD ($)
Future Minimum Sublease Rental Payments [Line Items]
2018	$ 113,000
2019	233,000
2020	265,000
2021	227,000
Future Minimum Sublease Expenses, Total	$ 838,000

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