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Significant Customers (Details) (Customer Concentration Risk)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Revenues
    
Concentration Risk    
Concentration risk, percentage 29.00% 17.50%
Revenues | Customer A
    
Concentration Risk    
Concentration risk, percentage 18.20% 17.50%
Revenues | Customer B
    
Concentration Risk    
Concentration risk, percentage 10.80% 0.00% [1]
Gross accounts receivable
    
Concentration Risk    
Concentration risk, percentage 37.30% 20.30%
Gross accounts receivable | Customer A
    
Concentration Risk    
Concentration risk, percentage 24.90% 20.30%
Gross accounts receivable | Customer B
    
Concentration Risk    
Concentration risk, percentage 12.40% 0.00%
[1] Sales didn't exceed 10% of the revenue.