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Summary of Significant Accounting Policies - Components of Inventory (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Jun. 30, 2019
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Inventory Disclosure [Abstract] |  |
Finished goods | $ 10,328 | $ 9,903
Raw materials | 4,448 | 3,850
Total inventory | $ 14,776 | $ 13,753
Finished goods, percent of inventory | 69.90% | 72.00%
Raw materials, percent of inventory | 30.10% | 28.00%
Percent of total inventory | 100.00% | 100.00%

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