CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
Income Statement [Abstract]
Revenue and other operating income	$ 0	$ 0
Operating costs and expenses
Compensation and benefits, including stock-based compensation	(3,394)	(1,994)
Consultancy, legal and professional fees	(4,422)	(1,822)
Depreciation and amortization	(2)	(2)
Accretion of asset retirement obligations	(811)	(289)
Exploration expense	(1,033)	(682)
Camp (expense) recoveries, net	(23)	(1,629)
LNG feasibility study expense	(8)	(191)
General and administrative	(2,162)	(1,598)
Total operating costs and expenses	(11,855)	(8,205)
Loss from operations	(11,855)	(8,205)
Other income (expense)
Interest income (expense), net	1,428	(305)
Foreign exchange gain (loss), net	(2,108)	(551)
Other income (expense), net	1	0
Total other income (expense)	(679)	(856)
Net loss	(12,534)	(9,061)
Less: Net loss attributable to noncontrolling interest	(417)	(879)
Less: Net loss attributable to redeemable noncontrolling interest	(1)	0
Net loss attributable to Tamboran Resources Corporation stockholders	(12,116)	(8,182)
Comprehensive income (loss)
Net loss	(12,534)	(9,061)
Other comprehensive income (loss)
Foreign exchange translation	12,364	1,738
Total comprehensive income (loss)	(170)	(7,323)
Less: Total comprehensive income (loss) attributable to noncontrolling interest	767	(1,003)
Less: Total comprehensive loss attributable to redeemable noncontrolling interest	5	0
Total comprehensive income (loss) attributable to Tamboran Resources Corporation stockholders	$ (942)	$ (6,320)
Net loss per common stock
Basic (in USD per share)	$ (0.347)	$ (0.467)
Diluted (in USD per share)	$ (0.347)	$ (0.467)
Weighted average number of common stock outstanding
Basic (in shares)	34,943,175	17,525,363
Diluted (in shares)	34,943,175	17,525,363