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Business and Credit Concentrations (Tables)
 12 Months Ended
Dec. 31, 2015
Risks and Uncertainties [Abstract]  
Schedule of significant portions of the Company's net sales
Significant portions of the Company’s net sales are as follows:
 
Year Ended
December 31,
 
2015
 
2014
 
2013
Net sales to foreign customers outside the U.S. and Canada
37
%
 
33
%
 
37
%
Net sales to SANG
*

 
*

 
12
%

 
*
Represents less than 10%