CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Revenues	$ 4,582	$ 2,963	$ 9,432	$ 5,558
Costs and expenses:
General and administrative	2,031	1,461	3,527	3,009
Depletion, depreciation, and amortization	687	758	1,392	1,577
Impairment of assets	1,637	243	1,637	2,413
Interest expense	0	0	0	4
Gain on sale of asset	(1,336)	0	(1,336)	0
Total costs and expenses	6,075	4,942	11,303	12,136
Loss before equity in loss of affiliates and income taxes	(1,493)	(1,979)	(1,871)	(6,578)
Equity in loss of affiliates	(25)	(207)	(68)	(286)
Loss before income taxes	(1,518)	(2,186)	(1,939)	(6,864)
Income tax benefit	0	(35)	(2)	(140)
Net loss	(1,518)	(2,151)	(1,937)	(6,724)
Less: Net (loss) earnings attributable to non-controlling interests	(4)	(26)	(9)	1
Net loss attributable to Barnwell Industries, Inc.	$ (1,514)	$ (2,125)	$ (1,928)	$ (6,725)
Basic and diluted net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.18)	$ (0.26)	$ (0.23)	$ (0.81)
Weighted-average number of common shares outstanding:
Basic and diluted (in shares)	8,277	8,277	8,277	8,277
Oil and natural gas
Revenues:
Revenues	$ 1,910	$ 1,924	$ 4,051	$ 3,156
Costs and expenses:
Costs and expenses	1,285	1,249	2,498	2,586
Depletion, depreciation, and amortization	584	684	1,190	1,433
Impairment of assets	1,637	243	1,637	2,413
Contract drilling
Revenues:
Revenues	2,593	987	5,239	2,150
Costs and expenses:
Costs and expenses	1,771	1,231	3,585	2,547
Depletion, depreciation, and amortization	91	60	176	117
Land investment
Revenues:
Revenues	0	0	0	165
Gas processing and other
Revenues:
Revenues	79	52	142	87
Costs and expenses:
Depletion, depreciation, and amortization	$ 12	$ 14	$ 26	$ 27