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Recapitalization on November 4, 2016 (Details Textual) $ in Millions |  | 2 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Aug. 11, 2016 | Dec. 31, 2016 shares | Jun. 30, 2018 USD ($) shares | Apr. 30, 2018 shares | Dec. 31, 2017 shares | Nov. 04, 2016 shares
Common Stock, Shares, Issued |  |  | 30,975,206 | 736,852 | 28,516,009 |
Common Stock, Shares, Outstanding |  |  | 30,975,206 |  | 28,516,009 |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 4.13607 |  |  |  |  |
TheMaven Network, Inc [Member] |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  | 12,517,152 |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio |  | 4.13607 |  |  |  |
Equity, Fair Value Disclosure | $ |  |  | $ 2.5 |  |  |
Equity Method Investment, Ownership Percentage |  |  | 56.70% |  |  |
Integrated Surgical System Inc [Member] |  |  |  |  |  |
Common Stock, Shares, Issued |  |  |  |  |  | 9,530,379
Common Stock, Shares, Outstanding |  | 22,047,531 |  |  |  | 9,530,379

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