CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Revenues	$ 3,984,000	$ 3,409,000	$ 13,416,000	$ 8,967,000
Costs and expenses:
General and administrative	1,248,000	1,352,000	4,775,000	4,361,000
Depletion, depreciation, and amortization	478,000	731,000	1,870,000	2,308,000
Impairment of assets	2,689,000	0	4,326,000	2,413,000
Interest expense	1,000	0	1,000	4,000
Gain on sale of asset	0	0	(1,336,000)	0
Total costs and expenses	7,364,000	4,639,000	18,667,000	16,775,000
Loss before equity in loss of affiliates and income taxes	(3,380,000)	(1,230,000)	(5,251,000)	(7,808,000)
Equity in loss of affiliates	(111,000)	(259,000)	(179,000)	(545,000)
Loss before income taxes	(3,491,000)	(1,489,000)	(5,430,000)	(8,353,000)
Income tax benefit	(24,000)	(91,000)	(26,000)	(231,000)
Net loss	(3,467,000)	(1,398,000)	(5,404,000)	(8,122,000)
Less: Net loss attributable to non-controlling interests	(11,000)	(33,000)	(20,000)	(32,000)
Net loss attributable to Barnwell Industries, Inc.	$ (3,456,000)	$ (1,365,000)	$ (5,384,000)	$ (8,090,000)
Basic and diluted net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.42)	$ (0.16)	$ (0.65)	$ (0.98)
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	$ 830,000	$ 1,688,000	$ 4,881,000	$ 4,844,000
Costs and expenses:
Costs and expenses	981,000	1,314,000	3,479,000	3,900,000
Depletion, depreciation, and amortization	372,000	639,000	1,562,000	2,072,000
Impairment of assets	2,689,000	0	4,326,000	2,413,000
Contract drilling
Revenues:
Revenues	3,040,000	1,689,000	8,279,000	3,839,000
Costs and expenses:
Costs and expenses	1,967,000	1,242,000	5,552,000	3,789,000
Depletion, depreciation, and amortization	96,000	78,000	272,000	195,000
Land investment
Revenues:
Revenues	0	0	0	165,000
Gas processing and other
Revenues:
Revenues	114,000	32,000	256,000	119,000
Costs and expenses:
Depletion, depreciation, and amortization	$ 10,000	$ 14,000	$ 36,000	$ 41,000