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Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 USD ($) Customer / Customers | Sep. 30, 2018 USD ($) Customer / Customers | Sep. 30, 2019 USD ($) Customer / Customers | Sep. 30, 2018 USD ($) Customer / Customers | Dec. 31, 2018 USD ($) Customer / Customers
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Stock-based compensation | $ 81,000 | $ 83,000 | $ 446,000 | $ 308,000 |
Goodwill | 163,000 |  | 163,000 |  | $ 163,000
NTW [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Goodwill | $ 163,000 |  | $ 163,000 |  | $ 163,000
Sales [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Number of customers | Customer / Customers | 2 | 3 | 3 | 3 |
Concentration risks | 61.70% | 69.30% | 73.40% | 72.30% |
Receivables [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Number of customers | Customer / Customers |  |  | 3 |  | 2
Concentration risks |  |  | 54.60% |  | 64.90%

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