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Summary of Significant Accounting Policies (Details Narrative) | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) Number | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Accounting Policies [Abstract] |  |  |  |
Cash and cash equivalents | $ 3,043,874 | $ 2,327,865 | $ 3,260,808 | $ 3,752,375
Allowance for doubtful accounts | 2,884,899 |  | $ 2,981,705 | $ 2,625,765
Recognized revenue | 736,000 | 1,379,000 |  |
Stock based compensation expenses | $ 312,000 | $ 247,000 |  |
Number of reportable segments | Number | 2 |  |  |

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