CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Revenues:
Revenues	$ 5,239	$ 6,679	$ 12,750	$ 12,133
Costs and expenses:
General and administrative	2,050	2,241	4,299	4,071
Depletion, depreciation, and amortization	761	618	1,601	1,101
Foreign currency gain	(2)	0	(80)	0
Gain on sale of assets	0	0	(551)	0
Total costs and expenses	6,477	5,903	13,238	11,112
(Loss) earnings before equity in income of affiliates and income taxes	(1,238)	776	(488)	1,021
Equity in income of affiliates	0	1,760	538	2,967
(Loss) earnings before income taxes	(1,238)	2,536	50	3,988
Income tax (benefit) provision	(3)	138	76	250
Net (loss) earnings	(1,235)	2,398	(26)	3,738
Less: Net earnings attributable to non-controlling interests	2	346	122	613
Net (loss) earnings attributable to Barnwell Industries, Inc.	$ (1,237)	$ 2,052	$ (148)	$ 3,125
Basic net (loss) earnings per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.12)	$ 0.21	$ (0.01)	$ 0.33
Diluted net (loss) earnings per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.12)	$ 0.21	$ (0.01)	$ 0.33
Weighted-average number of common shares outstanding:
Basic (in shares)	9,956,687	9,570,989	9,956,687	9,507,955
Diluted (in shares)	9,956,687	9,570,989	9,956,687	9,507,955
Oil and natural gas
Revenues:
Revenues	$ 3,686	$ 5,133	$ 8,912	$ 9,053
Costs and expenses:
Costs and expenses	2,267	2,126	4,711	4,042
Depletion, depreciation, and amortization	718	577	1,514	1,013
Contract drilling
Revenues:
Revenues	1,501	818	3,449	1,694
Costs and expenses:
Costs and expenses	1,401	918	3,258	1,898
Depletion, depreciation, and amortization	43	41	86	88
Land investment
Revenues:
Revenues	0	695	265	1,295
Gas processing and other
Revenues:
Revenues	52	33	124	91
Costs and expenses:
Depletion, depreciation, and amortization	$ 0	$ 0	$ 1	$ 0