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Summary of Significant Accounting Policies (Details 1) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Sales [Member] |  |  |  |  |  |  |
Percentage of Sales | 61.70% |  | 69.30% | 73.40% | 72.30% |  |
Sales [Member] | Customer 1 [Member] |  |  |  |  |  |  |
Percentage of Sales | 35.00% |  | 27.10% | 31.10% | 27.50% |  |
Sales [Member] | Customer 2 [Member] |  |  |  |  |  |  |
Percentage of Sales | 26.70% |  | 28.50% | 31.00% | 33.30% |  |
Sales [Member] | Customer 3 [Member] |  |  |  |  |  |  |
Percentage of Sales |  | [1] | 13.70% | 11.30% | 11.50% |  |
Receivables [Member] |  |  |  |  |  |  |
Percentage of Sales |  |  |  | 54.60% |  | 64.90% |
Receivables [Member] | Customer 1 [Member] |  |  |  |  |  |  |
Percentage of Sales |  |  |  | 24.00% |  | 38.50% |
Receivables [Member] | Customer 2 [Member] |  |  |  |  |  |  |
Percentage of Sales |  |  |  | 19.50% |  | 26.40% |
Receivables [Member] | Customer 3 [Member] |  |  |  |  |  |  |
Percentage of Sales |  |  |  | 11.10% |  |  | [2]
[1] | Customer was less than 10% of sales for the three months ended September 30, 2019.
[2] | Customer was less than 10% of gross receivables at December 31, 2018.

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