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Summary of Significant Accounting Policies - Revenues by Major Products (Details) $ in Thousands | 12 Months Ended
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Jun. 30, 2018 USD ($) product_line | Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($)
Revenue from External Customer [Line Items] |  |  |
Number of product lines | product_line | 2 |  |
Revenues | $ 203,204 | $ 199,489 | $ 206,540
Revenues percentage | 100.00% | 100.00% | 100.00%
Product Concentration Risk | Sale Revenues, Gross |  |  |
Revenue from External Customer [Line Items] |  |  |
Concentration risk, percentage | 76.60% | 77.90% | 77.90%
Protandim® product line |  |  |
Revenue from External Customer [Line Items] |  |  |
Revenues | $ 133,923 | $ 130,873 | $ 128,019
Revenues percentage | 65.90% | 65.60% | 62.00%
TrueScience® product line |  |  |
Revenue from External Customer [Line Items] |  |  |
Revenues | $ 21,665 | $ 24,440 | $ 32,914
Revenues percentage | 10.70% | 12.30% | 15.90%
Other |  |  |
Revenue from External Customer [Line Items] |  |  |
Revenues | $ 47,616 | $ 44,176 | $ 45,607
Revenues percentage | 23.40% | 22.10% | 22.10%

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