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Major Customers as a Percentage of Net Accounts Receivable Balances (Details) | Dec. 31, 2016 | Dec. 31, 2015
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Ingram Micro Inc. |  |
Percent of net accounts receivable balances | 49.00% | 35.00%
Threshold percentage for disclosure | 10.00% | 10.00%
BlueStar, Inc. |  |
Percent of net accounts receivable balances | 30.00% | 22.00%
Threshold percentage for disclosure | 10.00% | 10.00%
ScanSource, Inc. |  |
Percent of net accounts receivable balances |  | 17.00%
Threshold percentage for disclosure | 10.00% | 10.00%

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