Basis of Financial Statement Presentation.

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- Definition

Common stock upon the exchange of convertible notes.

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- Definition

Subscription price per share

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

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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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

The cash inflow from the additional capital contribution to the entity.

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- Definition

Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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- Definition

Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in YYYY-MM-DD format.

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Basis of Financial Statement Presentation - Additional Information (Details) $ / shares in Units, $ in Millions				9 Months Ended
	Mar. 14, 2025 USD ($) $ / shares shares	Mar. 05, 2025 $ / shares shares	Feb. 14, 2025 $ / shares	Mar. 31, 2026 Segment $ / shares	Jun. 30, 2025 $ / shares	Mar. 31, 2025	Mar. 13, 2025 shares	Aug. 27, 2024 shares
Basis of Financial Statement Presentation [Line Items]
Common stock, par value \| $ / shares			$ 0.01	$ 0.01	$ 0.01
Common stock shares issued								231,884
Reverse stock split ratio			23
Number of reportable segments \| Segment				1
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description				The operating results of the Company’s single reportable segment are evaluated by the Company’s Chief Executive Officer, who has been determined to be the Company’s Chief Operating Decision Maker (“CODM”), to make key operating decisions, such as the allocation of resources and the evaluation of operating segment performance.
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]				srt:ChiefExecutiveOfficerMember
5E Boron Americas, LLC
Basis of Financial Statement Presentation [Line Items]
Ownership percentage				100.00%
Ascend Global Investment Fund SPC [Member]
Basis of Financial Statement Presentation [Line Items]
Transaction party beneficially				25.00%		25.00%
BEP Special Situations IV LLC [Member]
Basis of Financial Statement Presentation [Line Items]
Transaction party beneficially				10.00%		10.00%
Ascend Global Investment FundSpc And BEP Special Situations IVLLC Member
Basis of Financial Statement Presentation [Line Items]
Common stock shares issued	1,408,173
Subscription price per share \| $ / shares	$ 3.5507
Net proceeds from issuance of common stock \| $	$ 4.9
Warrant to purchase aggregate of shares							5,632,692
Warrants expiration date							Mar. 13, 2026
Ascend Global Investment FundSpc And BEP Special Situations IVLLC Member \| Exchange agreement [Member]
Basis of Financial Statement Presentation [Line Items]
Common stock, par value \| $ / shares		$ 0.01
Common stock upon the exchange of convertible notes		13,586,524