Business and Basis of Preparation (Policies)	9 Months Ended
Business and Basis of Preparation (Policies)	Mar. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Going Concern and Management’s Liquidity Plan	Going Concern and Management’s Liquidity Plan The accompanying condensed consolidated financial statements have been prepared on the basis that the Group will continue as a going concern which contemplates the realization of assets and the satisfaction of liabilities in the ordinary and usual course of business. As of March 31, 2025, the Group had: •not generated revenues since inception, and is unlikely to generate earnings in the immediate or foreseeable future; •a working capital surplus of $3,570,400, arising from proceeds of our United States Initial Public Offering (“IPO”), the net rig 403 sale proceeds and the refund for 2023 Research and Development (“R&D”) tax credit; •an accumulated deficit of $157,098,288 since inception; and •significant expenditures planned for the unproved properties in the next 12 months. These factors raise substantial doubt regarding the Group’s ability to continue as a going concern for the 12 months following the date these condensed consolidated financial statements were available for issuance. The continuation of the Group as a going concern is dependent upon the ability of the Group to obtain necessary additional capital to fund ongoing exploration, appraisal and development projects and/or obtain gas producing properties to attain future profitable operations. No assurance can be given that the Group will be successful in these efforts in the future. Management has several plans in various stages of progress to source additional funding to provide operating capital for the continued growth of the Group. As a result, these condensed consolidated financial statements do not include any adjustments related to the recoverability and classification of recorded assets and liabilities that might be necessary should the Group be unable to continue as a going concern.
Basis of Presentation of Condensed Consolidated Financial Statements	Basis of Presentation of Condensed Consolidated Financial Statements The accompanying condensed consolidated financial statements have been prepared in conformity with the accounting principles generally accepted in the United States of America (“U.S. GAAP”) and rules and regulations of the Securities and Exchange Commission (“SEC”) applicable to interim financial statements. Pursuant to such rules and regulations, certain disclosures and information required by U.S. GAAP for complete consolidated financial statements have been condensed or omitted. The accompanying condensed consolidated financial statements and notes therein should be read in conjunction with the financial statements and notes included in our consolidated financial statements for the year ended June 30, 2024 (“Group’s Annual Financial Statements”). These condensed consolidated financial statements reflect all adjustments, in the opinion of management, which include normal and recurring adjustments necessary to fairly state the Group’s consolidated financial position, results of operations, and cash flows for the periods presented herein. The interim results are not necessarily indicative of results for any other future annual or interim period. The June 30, 2024 condensed consolidated balance sheet was derived from the audited Group’s Annual Financial Statements but does not include all disclosures required by U.S. GAAP for annual financial statements.
Significant Judgments and Accounting Estimates	Significant Judgments and Accounting Estimates The preparation of these condensed consolidated financial statements in conformity with U.S. GAAP requires management to make certain estimates and assumptions that affect the amounts of assets and liabilities, revenue and expenses and related disclosures of contingent assets and liabilities reported in the condensed consolidated financial statements and the accompanying notes. There have been no significant changes to the Group’s accounting estimates from those disclosed in the Group’s Annual Financial Statements.
Foreign Currency Translation and Transactions	Foreign Currency Translation These condensed consolidated financial statements are presented in US dollars (“$” or “dollars”) and the functional currency of the Group is the Australian Dollar (“A$”). Adjustments resulting from the translation of functional currency financial statements to reporting currency are accumulated and reported as a part of “Accumulated Other Comprehensive Loss”, a separate component of stockholders’ equity. Foreign Currency Transactions Foreign currency transactions are translated into the Company’s functional currency using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses resulting from the settlement of such transactions and from the translation at financial year-end exchange rates of monetary assets and liabilities denominated in foreign currencies are recognized in the condensed consolidated statements of operations and comprehensive loss.
Leases as a Lessee	Leases As a Lessee The Group accounts for leases under ASC 842, Leases (“ASC 842”). The Group determines if an arrangement is a lease at inception of the arrangement and if such lease will be classified as an operating lease or a finance lease. The Group’s leases represent its right to use an underlying asset for the lease term. Right-of-use (“ROU”) assets and liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As the Group’s leases do not provide an implicit rate, the Group used a proxy for its incremental borrowing rate, which is the rate incurred to borrow on a collateralized basis over a similar term, an amount equal to the lease payments in a similar economic environment. The Group has elected to account for lease and non-lease components in its contracts as a single lease component for all asset classes except for office premises. Operating leases are included in “Operating lease right-of-use assets” within the Group’s condensed consolidated balance sheet. The Group’s related obligation to make lease payments are included in “Current portion of operating lease obligations” and “Operating lease obligations” within the Group’s condensed consolidated balance sheet. Operating lease expense for lease payments is recognized on a straight-line basis over the lease term. Finance leases are included in “Finance lease right-of-use assets” within the Group’s condensed consolidated balance sheet. The Group’s related obligation to make lease payments are included in “Current portion of finance lease obligations” and “Finance lease obligations” within the Group’s condensed consolidated balance sheet. Finance lease expense includes amortization of the ROU assets and interest on lease liabilities. The Group capitalizes the finance lease expense as a part of unproved properties when the leased asset is directly involved in the drilling of wells (i.e. the finance lease expense is a direct cost of drilling wells). Leases with a lease term of 12 months or less are not recorded on the condensed consolidated balance sheet and are recognized as lease expense on a straight-line basis over the lease term. When it is reasonably certain the Group will exercise an option to extend the short-term lease beyond 12 months, the cost will be capitalized.
Leases as a Lessor	As a Lessor Sublease income is recognized on a straight-line basis over the term of the sublease agreement and is recorded within “Other income (expense), net” in the condensed consolidated statements of operations and comprehensive loss.
Natural Gas Properties	Natural Gas Properties The Group’s operations are in the exploration and appraisal stage and has not yet realized any revenues from operations. The Group holds a number of exploration permits that are grouped into areas of interest according to geographical and geological attributes. Expenditure incurred in each area of interest is accounted for using the successful efforts method, as defined within ASC 932, Extractive Activities – Oil and Gas. Under this method, all general exploration and evaluation costs such as geological and geophysical costs are expensed as incurred. The direct costs of acquiring the rights to explore, drilling exploratory wells, and evaluating the results of drilling are capitalized as exploration and evaluation assets (as a part of unproved properties) pending the determination of the results of the well. If a well does not result in hydrocarbons being present, the previously capitalized costs are immediately expensed.
Deferred Debt Issuance Cost	Deferred Debt Issuance Costs The Group presents unamortized deferred debt issuance costs related to the establishment of a Performance Bond Facility Agreement (the “Facility Agreement”) as a component of “Prepaid expenses and other non-current assets” on its consolidated balance sheets because the outstanding balance under this Facility Agreement may fluctuate as the Group borrows and repays the relevant amounts. The Group amortizes the deferred debt issuance costs over the remaining term of the Facility on a straight-line basis which is reported within “interest income, net” in the condensed consolidated statements of operations and comprehensive loss.
Recently Issued Accounting Standards	Recently Issued Accounting Standards In November 2024, the Financial Accounting Standards Board (“FASB”) issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (“ASU 2024-03”), and in January 2025, the FASB issued ASU 2025-01, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date (“ASU 2025-01”). ASU 2024-03 requires public business entities to provide detailed disclosures in the notes to financial statements disaggregating specific expense categories, including employee compensation, depreciation, and intangible asset amortization, as well as certain other disclosures to provide enhanced transparency into the nature and function of expenses on an interim and annual basis. ASU 2024-03, as clarified by ASU 2025-01 is effective for annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The Group is currently evaluating ASU 2024-03 and the impact it may have on the Group's consolidated financial statements.