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Business and Basis of Preparation - Narrative (Details) $ in Thousands, $ in Millions			1 Months Ended	9 Months Ended
	May 13, 2026 USD ($)	May 13, 2026 AUD ($)	Apr. 30, 2026 USD ($)	Mar. 31, 2026 USD ($) well	Jun. 30, 2025 USD ($)
Product Information [Line Items]
Working capital surplus (deficit)				$ 45,200
Proceeds from issuance of long-term debt and finance costs				44,600
Accumulated deficit				191,483	$ 167,281
Total gross proceeds from issuance				$ 110,395
Number of wells \| well				3
Subsequent event
Product Information [Line Items]
Total gross proceeds from issuance			$ 119,000
Underwritten Offering And Institutional Entitlement Offering \| Subsequent event
Product Information [Line Items]
Total gross proceeds from issuance			$ 180,400
Retail Entitlement Offer \| Subsequent event
Product Information [Line Items]
Total gross proceeds from issuance	$ 17,900	$ 24.8