CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Revenues:
Revenue	$ 3,569	$ 4,678	$ 7,503	$ 9,840
Costs and expenses:
General and administrative	2,162	1,256	3,325	2,576
Depletion, depreciation, and amortization	754	1,342	1,658	2,801
Impairment of assets	52	1,677	665	1,677
Foreign currency (gain) loss	(10)	128	341	2
Interest expense	1	0	1	0
Total costs and expenses	4,945	6,733	10,472	12,177
Loss from continuing operations before equity in income of affiliates and income taxes	(1,376)	(2,055)	(2,969)	(2,337)
Equity in income of affiliates	0	1,071	0	1,071
Loss from continuing operations before income taxes	(1,376)	(984)	(2,969)	(1,266)
Income tax provision	162	100	169	166
Net loss from continuing operations	(1,538)	(1,084)	(3,138)	(1,432)
Net earnings (loss) from discontinued operations	331	(466)	12	(780)
Net loss	(1,207)	(1,550)	(3,126)	(2,212)
Less: Net earnings (loss) attributable to non-controlling interests	0	222	(2)	224
Net loss attributable to Barnwell Industries, Inc.	$ (1,207)	$ (1,772)	$ (3,124)	$ (2,436)
Basic and diluted (loss) earnings per common share attributable to Barnwell Industries, Inc. stockholders:
Basic net loss per common share from continuing operations attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.15)	$ (0.13)	$ (0.31)	$ (0.16)
Diluted net loss per common share from continuing operations attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	(0.15)	(0.13)	(0.31)	(0.16)
Basic net earnings (loss) per common share from discontinued operations (in dollars per share)	0.03	(0.05)	0	(0.08)
Diluted net earnings (loss) per common share from discontinued operations (in dollars per share)	0.03	(0.05)	0	(0.08)
Basic net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	(0.12)	(0.18)	(0.31)	(0.24)
Diluted net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.12)	$ (0.18)	$ (0.31)	$ (0.24)
Weighted-average number of common shares outstanding:
Basic (in shares)	10,053,534	10,019,172	10,050,319	10,007,905
Diluted (in shares)	10,053,534	10,019,172	10,050,319	10,007,905
Oil and natural gas
Revenues:
Revenue	$ 3,543	$ 4,144	$ 7,440	$ 9,274
Costs and expenses:
Oil and natural gas operating	1,986	2,330	4,482	5,121
Depletion, depreciation, and amortization	753	1,342	1,657	2,800
Impairment of assets	52	1,677	665	1,677
Sale of interest in leasehold land
Revenues:
Revenue	0	500	0	500
Gas processing and other
Revenues:
Revenue	26	34	63	66
Costs and expenses:
Depletion, depreciation, and amortization	$ 1	$ 0	$ 1	$ 1