Major Customers (Details) - item	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration risk percentage	83.00%	81.00%
Number of customers representing concentration risk percentage	2	3
Accounts Receivable [Member] | Customer One [Member]
Concentration Risk [Line Items]
Concentration risk percentage	53.00%	50.00%
Accounts Receivable [Member] | Customer Two [Member]
Concentration Risk [Line Items]
Concentration risk percentage	30.00%	18.00%
Accounts Receivable [Member] | Customer Three [Member]
Concentration Risk [Line Items]
Concentration risk percentage		13.00%
Sales [Member]
Concentration Risk [Line Items]
Concentration risk percentage	64.00%	57.00%
Number of customers representing concentration risk percentage	3	3
Sales [Member] | Customer One [Member]
Concentration Risk [Line Items]
Concentration risk percentage	36.00%	24.00%
Sales [Member] | Customer Two [Member]
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	18.00%
Sales [Member] | Customer Three [Member]
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	15.00%