The element represents sale of stock price per share 1.

No definition available.

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- Definition

The element represents share based compensation arrangement by share based payment award fair value assumptions expected volatilityrate.

+ References

No definition available.

+ Details

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- Definition

Description of reason for issuing warrant or right.

+ References

No definition available.

+ Details

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- Definition

A description of the new financial instrument issued in a noncash (or part noncash) conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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Balance Type:	na
Period Type:	duration

- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Excludes Selling, General and Administrative Expense.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(7)(b))
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Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow from the issuance of equity classified as other.

+ References

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-Paragraph 14
-Subparagraph (a)
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Description of stock transaction which may include details of the offering (IPO, private placement), a description of the stock sold, percentage of subsidiary's or equity investee's stock sold, a description of the investors and whether the stock was issued in a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
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-Paragraph 2
-Subparagraph (f)(2)(iv)
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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued in lieu of cash for services contributed to the entity. Number of shares includes, but is not limited to, shares issued for services contributed by vendors and founders.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of stock issued attributable to transactions classified as other.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

Name:	srt_TitleOfIndividualAxis=srt_DirectorMember
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- Details

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COMMON SHARES (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended		12 Months Ended
	Jun. 24, 2024	Sep. 02, 2023	Jun. 09, 2023	Apr. 28, 2023	Jun. 30, 2024	Sep. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Subsidiary, Sale of Stock [Line Items]
Proceeds from equity						$ 962
Expected life							5 years	3 years
Risk-free rate							4.25%	3.30%
Expected dividend rate							0.00%	0.00%
Outstanding stock options vested							100.00%
Share based compensation expense							$ 2,881	$ 1,794
Description of warrants							(ii) the last reported sale price of the Common Shares equals or exceeds approximately $16.10 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days
GXII Public Warrants [Member]
Subsidiary, Sale of Stock [Line Items]
Warrants traded prior to the closing							9,999,959
GXII Private Warrants [Member]
Subsidiary, Sale of Stock [Line Items]
Warrants traded prior to the closing							5,666,667
Yorkville Equity Facility Financing Agreement [Member]
Subsidiary, Sale of Stock [Line Items]
Conversion of Stock, New Issuance			the Company issued 100,000 Common Shares under the Yorkville Equity Facility Financing Agreement (discussed below) in exchange for $488 in cash proceeds. The Company recorded a non-cash operating expense of $13 which represented the difference between the proceeds received and the fair value of the Common Shares issued based on Nasdaq closing price per Common Share on the issuance date.
Kingdon Capital Management LLC [Member]
Subsidiary, Sale of Stock [Line Items]
Conversion of Stock, New Issuance				the Company closed a registered direct offering and issued 314,465 Common Shares for $2,000, before deducting share issuance costs of $172. The Common Shares were sold pursuant to a securities purchase agreement, dated April 26, 2023, between the Company and a fund managed by Kingdon Capital Management, LLC.
Warrant [Member]
Subsidiary, Sale of Stock [Line Items]
Proceeds from equity					$ 161	$ 254	$ 264
Expected life						2 years	2 years
Risk-free rate					4.73%	4.85%	4.33%
Expected volatility					73.92%	71.63%	54.80%
Expected dividend rate					0.00%	0.00%	0.00%
Description of warrants							Each NioCorp Assumed Warrant entitles the holder to the right to purchase 1.11829212 Common Shares at an exercise price of $11.50 per 1.11829212 Common Shares (subject to adjustments for stock splits, stock dividends, reorganizations, recapitalizations and the like).
Common Stock [Member]
Subsidiary, Sale of Stock [Line Items]
Proceeds from equity					$ 441	$ 708	$ 977
Units issue and sold								81,213
Warrants traded prior to the closing							283,692
Private Placement [Member]
Subsidiary, Sale of Stock [Line Items]
Other operating expenses							$ 92
Employee related costs							$ 10
Private Placement [Member] \| Common Stock [Member]
Subsidiary, Sale of Stock [Line Items]
Proceeds from equity	$ 602
Description of stock transaction	the Company closed a non-brokered private placement (the “June 2024 Private Placement”) of units of the Company (the “June 2024 Units”). A total of 315,000 June 2024 Units were issued at a price per June 2024 Unit of $1.91, for total gross proceeds to the Company of $602. Each June 2024 Unit consists of one Common Share and one Warrant (“June 2024 Warrant”). Each June 2024 Warrant entitles the holder to acquire one Common Share at a price of $2.20 at any time prior to June 24, 2026. Proceeds of the June 2024 Private Placement will be used for continued advancement of the Elk Creek Project and for working capital and general corporate purposes.
Private Placement [Member] \| Canada, Dollars
Subsidiary, Sale of Stock [Line Items]
Shares issue		250,000					413,432
Price per unit		$ 4.00
Gross proceeds		$ 1,000					$ 1,290
Shares price		$ 4.60							$ 3.54
Private Placement [Member] \| Canada, Dollars \| Director [Member]
Subsidiary, Sale of Stock [Line Items]
Shares price									3.205
Units issue and sold							138,845
Private Placement [Member] \| Canada, Dollars \| Investor [Member]
Subsidiary, Sale of Stock [Line Items]
Shares price									$ 3.08
Units issue and sold							274,587