Segments and Major Customers (Details 1) - Accounts Receivable [Member] - Customer Concentration Risk	Dec. 31, 2017	Dec. 31, 2016
Customer 1 [Member]
Concentration Risk
Customer concentration risk		13.00%
Customer 2 [Member]
Concentration Risk
Customer concentration risk	12.00%	12.00%
Customer 3 [Member]
Concentration Risk
Customer concentration risk	13.00%
Customer 4 [Member]
Concentration Risk
Customer concentration risk		17.00%
Customer 5 [Member] [Domain]
Concentration Risk
Customer concentration risk	11.00%