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Summary of Significant Accounting Policies (Details Textual) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 USD ($) Customer / Customers | Sep. 30, 2017 Customer / Customers | Sep. 30, 2018 USD ($) Customer / Customers | Sep. 30, 2017 USD ($) Customer / Customers | Dec. 31, 2017 USD ($) Customer / Customers
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Stock-based compensation |  |  | $ 308,000 | $ 9,000 |
Percentage of inventory valuation | 50.00% |  | 50.00% |  |
Goodwill | $ 272,000 |  | $ 272,000 |  | $ 272,000
Loss gain on assets held for sale |  |  | (930,000) |  | 1,563,000
ECC [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Goodwill | 109,000 |  | 109,000 |  | 109,000
NTW [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Goodwill | $ 163,000 |  | $ 163,000 |  | $ 163,000
Total Sales [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Concentration Risks | 67.40% | 72.10% | 69.10% | 68.80% |
Number of Customers | Customer / Customers | 3 | 3 | 3 | 3 |
Accounts receivable [Member] |  |  |  |  |
Summary of Significant Accounting Policies (Textual) |  |  |  |  |
Concentration Risks |  |  | 67.90% |  | 68.70%
Number of Customers | Customer / Customers |  |  | 3 |  | 3

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