Quarterly report pursuant to Section 13 or 15(d)

Major customers (Details)

v2.4.0.8
Major customers (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2014
entity
Sep. 30, 2013
entity
Sep. 30, 2014
entity
Sep. 30, 2013
entity
Purchases | Vendor concentration risk | One major vendor
       
Significant Customers        
Number of vendors 1 1 1 1
Percentage of concentration risk 17.30% 10.40% 13.60% 10.00%
Net sales | Customer concentration risk
       
Significant Customers        
Number of customers 3 3 3 3
Net sales | Customer one | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk 16.80% 15.00% 16.70% 15.00%
Net sales | Customer two | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk 18.70% 15.00% 16.40% 14.30%
Net sales | Customer three | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk 10.60% 11.80% 10.90% 11.90%
Net accounts receivable | Customer one | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk     15.00%  
Net accounts receivable | Customer two | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk     16.90%  
Net accounts receivable | Customer three | Customer concentration risk
       
Significant Customers        
Percentage of concentration risk     8.10%