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Investments, Carried at Cost (Tables) | 6 Months Ended
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Jun. 30, 2018
Investments Schedule [Abstract] |
Investments, Carried at Cost | The following table sets forth the Company’s investments, carried at cost:
|  | June 30, 2018 |  |  | December 31, 2017 |
AdvisorEngine – Preferred stock |  | $ | 25,000 |  |  | $ | 25,000 |
AdvisorEngine – Option |  |  | 3,278 |  |  |  | 3,278 |
Thesys Group, Inc. (“Thesys”). |  |  | 6,909 |  |  |  | 6,909 |
Total |  | $ | 35,187 |  |  | $ | 35,187 |

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- Definition A tabular disclosure of (a) the aggregate carrying amount of all cost-method investments; (b) the aggregate carrying amount of cost-method investments that the investor did not evaluate for impairment for cost-method investments. + References No definition available. + Details
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