CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Revenues:
Revenues	$ 12,075	$ 9,368
Costs and expenses:
General and administrative	5,524	6,262
Depletion, depreciation, and amortization	3,022	1,111
Impairment of assets	5,710	202
Gain on sales of assets	0	(2,255)
Interest expense	5	7
Total costs and expenses	24,447	11,610
Loss before equity in (loss) income of affiliates and income taxes	(12,372)	(2,242)
Equity in (loss) income of affiliates	(276)	223
Loss before income taxes	(12,648)	(2,019)
Income tax benefit	(231)	(601)
Net loss	(12,417)	(1,418)
Less: Net (loss) earnings attributable to non-controlling interests	(3)	352
Net loss attributable to Barnwell Industries, Inc. stockholders	$ (12,414)	$ (1,770)
Basic net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (1.50)	$ (0.21)
Diluted net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (1.50)	$ (0.21)
Weighted-average number of common shares outstanding:
Basic (in shares)	8,277,160	8,277,160
Diluted (in shares)	8,277,160	8,277,160
Oil and natural gas
Revenues:
Revenues	$ 6,406	$ 3,706
Costs and expenses:
Costs and expenses	5,213	2,633
Depletion, depreciation, and amortization	2,680	826
Impairment of assets	5,710	0
Contract drilling
Revenues:
Revenues	5,349	3,769
Costs and expenses:
Costs and expenses	4,973	3,650
Depletion, depreciation, and amortization	287	223
Sale of interest in leasehold land
Revenues:
Revenues	165	1,645
Costs and expenses:
Impairment of assets	0	37
Gas processing and other
Revenues:
Revenues	155	248
Costs and expenses:
Depletion, depreciation, and amortization	55	62
Impairment of assets	$ 0	$ 165