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Summary of Significant Accounting Policies (Details 2) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 item
Total sales |  |  |
Credit Risk |  |  |
Threshold percentage which the entity uses for disclosure |  |  | 10.00%
Customer |  |  |
Credit Risk |  |  |
Number of customers | 4 | 3 |
Customer one |  |  |
Credit Risk |  |  |
Number of customers |  |  | 1
Percentage of total sales | 21.00% | 18.00% |
Customer two |  |  |
Credit Risk |  |  |
Percentage of total sales | 16.00% | 12.00% |
Customer three |  |  |
Credit Risk |  |  |
Percentage of total sales | 14.00% | 10.00% |
Customer four |  |  |
Credit Risk |  |  |
Percentage of total sales | 11.00% |  |

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