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Significant Accounting Policies and Estimates (Tables) | 3 Months Ended | 5 Months Ended
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Mar. 31, 2017 | Dec. 31, 2016
Accounting Policies [Abstract] |  |
Schedule of Depreciation and Amortization, Useful Lives of Assets [Table Text Block] | Depreciation and amortization are provided using the straight-line method over the following estimated useful lives:
Office equipment and computers | 3-5 years
Furniture and fixtures | 5-8 years
Website development costs | 2-3 years
| Depreciation and amortization are provided using the straight-line method over the following estimated useful lives:
Office equipment and computers | 3-5 years
Furniture and fixtures | 5-8 years
Website development costs | 2-3 years

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- Definition Tabular disclosure of useful lives for assets. + References No definition available. + Details
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Namespace Prefix: | mven_
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Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration