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Summary of Significant Accounting Policies - Narrative (Details) |  | 12 Months Ended
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Oct. 19, 2015 | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($)
Summary of Significant Accounting Policies Additional Information [Abstract] |  |  |  |
Recorded bad debt expense |  | $ 0 | $ 0 | $ 0
Impairment of intangible assets |  | 0 |  |
Loss from write-off of intangible assets |  | $ 0 | 350,000 | 0
Money back guarantee period |  | 30 days |  |
Percentage of products can be returned for a full refund by terminated distributors |  | 30.00% |  |
Restocking fee percent for full refund (percent) |  | 10.00% |  |
Reserve balance for returns and allowances |  | $ 400,000 | 400,000 |
Research and development |  | $ 1,200,000 | $ 1,100,000 | $ 1,000,000
Stock split ratio | 7 |  |  |
Blended tax rate |  | 28.00% | 34.00% | 35.00%
Cash Accounts Held Primarily At Financial Institution |  |  |  |
Summary of Significant Accounting Policies Additional Information [Abstract] |  |  |  |
Concentration of credit risk |  | $ 11,400,000 |  |
Cash Accounts Held at Other Financial Institutions |  |  |  |
Summary of Significant Accounting Policies Additional Information [Abstract] |  |  |  |
Concentration of credit risk |  | $ 5,300,000 |  |

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- Definition Maximum amount of loss due to credit risk that, based on the gross fair value of the financial instrument, the entity would incur if parties to the financial instruments that make up the concentration failed completely to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32698-109319 + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
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