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Segment Information and Concentrations - Major customers accounted for at least 10% of total revenues (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Ingram Micro Inc.
Percent of total revenues	22.00%	19.00%	19.00%	18.00%
Threshold percentage for disclosure	10.00%	10.00%	10.00%	10.00%
Scansource, Inc.
Percent of total revenues	26.00%	24.00%	22.00%	21.00%
Threshold percentage for disclosure	10.00%	10.00%	10.00%	10.00%
BlueStar, Inc.
Percent of total revenues	18.00%	16.00%	14.00%
Threshold percentage for disclosure	10.00%	10.00%	10.00%	10.00%

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- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

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- Definition

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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