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Nature of Business and Summary of Significant Accounting Policies - Disaggregated net sales by customer type (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Mar. 31, 2020
Revenue	$ 24,000	$ 17,000	$ 70,000	$ 68,000
Medical
Revenue	15,000	11,000	45,000	47,000
Associations
Revenue	3,000	3,000	9,000	9,000
Education
Revenue	3,000	3,000	9,000	9,000
Other
Revenue	$ 3,000	$ 0	$ 7,000	$ 3,000

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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