CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,412)	$ (1,919)
Other comprehensive (loss) income:
Foreign currency translation adjustments, net of taxes of $0	(27)	93
Total other comprehensive (loss) income	(27)	93
Total comprehensive loss	(1,439)	(1,826)
Less: Comprehensive (income) loss attributable to non-controlling interests	(14)	2
Comprehensive loss attributable to Barnwell Industries, Inc.	$ (1,453)	$ (1,824)