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Major customers accounted for at least 10% of total revenues (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Ingram Micro Inc.
Percent of total revenues	37.00%	29.00%
Threshold percentage for disclosure	10.00%	10.00%
BlueStar, Inc.
Percent of total revenues	17.00%	22.00%
Threshold percentage for disclosure	10.00%	10.00%
ScanSource, Inc.
Percent of total revenues	16.00%	18.00%
Threshold percentage for disclosure	10.00%	10.00%

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- Details

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