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Major Customers as a Percentage of Net Accounts Receivable Balances (Details)	Sep. 30, 2019	Dec. 31, 2018
Ingram Micro Inc.
Percent of net accounts receivable balances	37.00%	41.00%
Threshold percentage for disclosure	10.00%	10.00%
Ingram Micro Pan Europe GmbH
Percent of net accounts receivable balances	17.00%
Threshold percentage for disclosure	10.00%	10.00%
BlueStar, Inc.
Percent of net accounts receivable balances	14.00%	19.00%
Threshold percentage for disclosure	10.00%	10.00%

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