Stock Options - Additional information regarding outstanding options (Details) - $ / shares	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Options outstanding, shares	3,650,000	3,650,000	2,500,000
Weighted average exercise price	$ 0.06	$ 0.06	$ 0.08
Options excercisable	3,650,000
Options exercisable, weighted average exercise price	$ 0.06
$0.03 per share
Options outstanding, shares	1,150,000
Weighted average remaining contractual life	4 years 5 months 23 days
Weighted average exercise price	$ 0.03
Options excercisable	1,150,000
Options exercisable, weighted average exercise price	$ 0.03
$0.08 per share
Options outstanding, shares	2,500,000
Weighted average remaining contractual life	1 year 7 months 10 days
Weighted average exercise price	$ 0.08
Options excercisable	2,500,000
Options exercisable, weighted average exercise price	$ 0.08

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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-Publisher FASB
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- Definition

Number of options outstanding, including both vested and non-vested options.

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-Publisher FASB
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

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