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Major customers accounted for at least 10% of total revenues (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Scansource, Inc.
   
Percent of total revenues 20.00% 21.00%
Threshold percentage for disclosure 10.00% 10.00%
Ingram Micro Inc.
   
Percent of total revenues 20.00% 17.00%
Threshold percentage for disclosure 10.00% 10.00%
BlueStar, Inc.
   
Percent of total revenues 15.00% 10.00%
Threshold percentage for disclosure 10.00% 10.00%