Financial Instruments and Financial Risk Management - Fair Value by Hierarchy (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Dec. 31, 2024	Dec. 31, 2025	Jun. 30, 2024
Financial Instruments and Financial Risk Management
Fair value gain on financial asset - FID	$ 1,052	$ 4,161	$ 391
Financial asset - FID
Financial Instruments and Financial Risk Management
Financial assets	48,138	52,299	47,086
SWA
Financial Instruments and Financial Risk Management
Financial assets	28,400	31,400	27,900
ETX
Financial Instruments and Financial Risk Management
Financial assets	19,700	20,900	19,100
Investment in Aqualung
Financial Instruments and Financial Risk Management
Financial assets	2,335	5,350	2,500
Level 3 of fair value hierarchy \| Financial asset - FID
Financial Instruments and Financial Risk Management
Financial assets	48,138	52,299	47,086
Level 3 of fair value hierarchy \| Investment in Aqualung
Financial Instruments and Financial Risk Management
Financial assets	$ 2,335	$ 5,350	$ 2,500

$ 1,052

$ 4,161

$ 391

28,400

31,400

27,900

2,335

5,350

2,500

$ 2,335

$ 5,350

$ 2,500