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Significant Customers (Tables)
 12 Months Ended
Dec. 31, 2014
Risks and Uncertainties [Abstract]  
Schedules of Concentration of Risk, by Risk Factor
Sales to significant customers that represented more than 10 percent of total revenues are as follows:
 
Year ended December 31,
 
2014
 
2013
Customer A
16.0
%
 
18.2
%
Customer B
—
%
*
10.8
%
Total
16.0
%
 
29.0
%

* Sales didn't exceed 10% of the revenue.

The following table summarizes the percentage of total gross accounts receivable from significant customers:
 
As of December 31,
 
2014
 
2013
Customer A
21.0
%
 
24.9
%
Customer B
10.0
%
 
12.4
%
Total
31.0
%
 
37.3
%