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Major customers accounted for at least 10% of total revenues (Details)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Ingram Micro Inc.    
Percent of total revenues 29.00% 31.00%
Threshold percentage for disclosure 10.00% 10.00%
BlueStar, Inc.    
Percent of total revenues 22.00% 17.00%
Threshold percentage for disclosure 10.00% 10.00%
Scansource, Inc.    
Percent of total revenues 18.00% 19.00%
Threshold percentage for disclosure 10.00% 10.00%