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Concentration of Credit Risk and Significant Customers (Tables) | 12 Months Ended
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Jun. 30, 2019
Risks and Uncertainties [Abstract] |
Schedules of Concentration of Risk, by Risk Factor | Summarized below are individual customers whose revenue or accounts receivable balances were 10% or higher than the respective total consolidated amounts:
|  | Year Ended June 30,
Percentage of revenue |  | 2019 |  | 2018 |  | 2017
Customer A |  | 28.8 | % |  | 28.3 | % |  | 26.9 | %
Customer B |  | 36.4 | % |  | 35.2 | % |  | 35.8 | %
Customer C |  | * |  |  | * |  |  | 10.6 | %
|  | June 30,
Percentage of accounts receivable |  | 2019 |  | 2018
Customer A |  | 12.1 | % |  | 17.1 | %
Customer B |  | 19.7 | % |  | 35.5 | %
Customer C |  | 18.1 | % |  | 10.6 | %
Customer D |  | 13.3 | % |  | * |
* Less than 10%

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