Concentration Of Credit Risk (Narrative) (Details)	12 Months Ended
	Dec. 31, 2013 customer	Dec. 31, 2012 customer
Concentration Risk [Line Items]
Number of significant customers	8	5
Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of significant customers	5	5
Concentration risk percentage of accounts receivable	51.50%	55.50%