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Segments and Major Customers (Details 2) - Customer Concentration Risk - Sales, net | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Customer A |  |
Concentration Risk [Line Items] |  |
Revenue from major customer as a percentage of total revenue |  | 34.00%
Customer B |  |
Concentration Risk [Line Items] |  |
Revenue from major customer as a percentage of total revenue |  | 11.00%
Customer C |  |
Concentration Risk [Line Items] |  |
Revenue from major customer as a percentage of total revenue | 19.00% |
Customer D |  |
Concentration Risk [Line Items] |  |
Revenue from major customer as a percentage of total revenue | 16.00% |

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