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Significant Customers and Concentration of Credit Risk (Tables)
12 Months Ended
Dec. 31, 2015
Risks and Uncertainties [Abstract]  
Schedules of Concentration of Risk, by Risk Factor
The percentage of product sales to our customer that represented 10% or more of revenue in at least one of the periods presented, is as follows:
 
 
Year ended December 31,
 
 
2014
 
2013
Customer A
 
43
%
 
25
%
Customer B
 
18
%
 
6
%
Customer C
 
14
%
 
26
%
Customer D
 
11
%
 
34
%
The following accounts represented 10% or more of total accounts receivable in at least one of the periods presented:
 
 
December 31,
 
 
2014
 
2013
Customer A
 
24
%
 
25
%
Customer B
 
31
%
 
1
%
Customer C
 
16
%
 
11
%
Customer D
 
21
%
 
54
%