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Summary of Significant Accounting Policies (Details 1)
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Accounting Policies [Abstract]        
Customer 1 percentage of sales 26.10% 16.70% 26.60% 19.40%
Customer 2 percentage of sales 19.60% 23.50% 22.60% 16.70%
Customer 3 percentage of sales [1] 17.00% [1] 17.40%
[1] Customer was less than 10% of sales at June 30, 2018.