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Fair value of shares issued for equity compensation plans.

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Number of senior secured convertible notes converted.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Gross number of share options (or share units) granted during the period.

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Number of shares issued under share-based payment arrangement.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Capital Stock - Additional Information (Details)	3 Months Ended		9 Months Ended		12 Months Ended
Capital Stock - Additional Information (Details)	Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) ConvertibleNote $ / shares shares	Jun. 30, 2021 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Capital stock, shares authorized \| shares	200,000,000		200,000,000		200,000,000
Capital stock, par value \| $ / shares	$ 0.01		$ 0.01		$ 0.01
Shares of common stock issued under equity compensation plans \| shares			266,000
Fair value of shares issued for equity compensation plans \| $			$ 170,240
Capital stock, shares issued \| shares	46,591,081		46,591,081		38,154,109
Capital stock, shares outstanding \| shares	46,591,081		46,591,081		38,154,109
Options, Granted \| shares					755,000
Stock based compensation (Note 5) \| $			$ 318,840	$ 359,753
Total unamortized compensation cost related to non-vested share based compensation \| $	$ 29,224		$ 29,224
Expected weighted-average period of unrecognized compensation cost			1 year 1 month 24 days
Total fair value of share based compensation arrangements vested \| $			$ 152,279	$ 332,836
Grassy Mountain Project
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares				166,792
Aggregate number of units issued, per unit \| $ / shares		$ 1.10		$ 1.10
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unamortized compensation cost related to non-vested share based compensation \| $	$ 399,589		$ 399,589
Expected weighted-average period of unrecognized compensation cost			1 year 29 days
Restricted stock units, Granted \| shares	701,000	0	701,000
Service Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5) \| $	$ 1,405	$ 45,021	$ 49,455	$ 245,022
Service Condition \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5) \| $	24,150	0
Performance Condition
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5) \| $	5,462	35,843	$ 41,962	$ 114,731
Performance Condition \| Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation (Note 5) \| $	$ 33,032	$ 0
Senior Management
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options, Granted \| shares	0	0	0	755,000
2015 and 2016 Stock Incentive and Compensation Plans
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average remaining contractual term (in years), grants			5 years
2015 and 2016 Stock Incentive and Compensation Plans \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of options and shares available for grant to employees and directors \| shares	3,500,000		3,500,000
Shares Average Price of $1.16
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares			7,766,388	2,625,644
Aggregate number of units issued, per unit \| $ / shares	$ 0.835	$ 1.24	$ 0.835	$ 1.24
Proceeds from issuance of common stock and warrants \| $			$ 6,486,141	$ 3,266,548
Share issuance costs \| $			$ 271,661	$ 130,922
Accrued Interest
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Aggregate number of units issued (in shares) \| shares			404,584	362,427
Fair value of shares issued \| $			$ 324,055	$ 398,777
2019 Secured Convertible Notes
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share issued during period shares conversion of convertible securities \| shares				1,200,000
Number of senior secured convertible notes converted \| ConvertibleNote				1,200