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Significant Customers (Details Textual)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Sales Revenue, Net [Member]    
Concentration Risk, Benchmark one customer that exceeded 10% of revenue no customers that exceeded 10% of revenue
Accounts Receivable [Member]    
Concentration Risk, Benchmark no customers who exceeded 10% of the accounts receivable  
Accounts Receivable [Member] | One Customer [Member]    
Concentration Risk, Percentage   34.00%