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Summary of Significant Accounting Policies (Details 1) - Sales Revenue, Net [Member] | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Percentage of Sales | 67.40% |  | 72.10% |  | 69.10% |  | 68.80% |
Customer one [Member] |  |  |  |  |  |  |  |
Percentage of Sales | 27.70% |  | 27.50% |  | 31.80% |  | 25.40% |
Customer two [Member] |  |  |  |  |  |  |  |
Percentage of Sales | 26.40% |  | 23.70% |  | 26.30% |  | 22.00% |
Customer three [Member] |  |  |  |  |  |  |  |
Percentage of Sales | 13.30% |  |  | [1] | 11.00% |  |  | [1]
Customer four [Member] |  |  |  |  |  |  |  |
Percentage of Sales |  | [2] | 20.90% |  |  | [2] | 21.40% |
[1] | Customer was less than 10% of sales at September 30, 2017.
[2] | Customer was less than 10% of sales at September 30, 2018.

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