Concentrations (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016 customer item	Dec. 31, 2015 customer
Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk [Line Items]
Number of customers	1
Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk [Line Items]
Number of customers		2
Cost of Goods, Product Line [Member] | Supplier Concentration Risk [Member]
Concentration Risk [Line Items]
Number of suppliers | item	2
Revenues [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk [Line Items]
Concentration of risk percentage	11.00%
Revenues [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Concentration Risk [Line Items]
Concentration of risk percentage		12.00%
Revenues [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Concentration Risk [Line Items]
Concentration of risk percentage		11.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Customer [Member]
Concentration Risk [Line Items]
Number of customers		1
Concentration of risk percentage	4.00%	12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]
Concentration Risk [Line Items]
Number of customers	2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer One [Member]
Concentration Risk [Line Items]
Concentration of risk percentage	17.00%	5.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer Two [Member]
Concentration Risk [Line Items]
Concentration of risk percentage	12.00%	0.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Ten Customers [Member]
Concentration Risk [Line Items]
Number of customers	10	10
Concentration of risk percentage	65.00%	62.00%