XML 461 R56.htm IDEA: XBRL DOCUMENT v3.20.4

Summary of Significant Accounting Policies - Schedule of Depreciation and Amortization, Useful Lives of Assets (Details)	12 Months Ended
	Dec. 31, 2018
Office Equipment and Computers [Member]
Property, plant and equipment, useful life	3 years
Furniture and Fixtures [Member] | Minimum [Member]
Property, plant and equipment, useful life	3 years
Furniture and Fixtures [Member] | Maximum [Member]
Property, plant and equipment, useful life	5 years

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=MVEN_OfficeEquipmentAndComputersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: