CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenues:
Oil and natural gas	$ 4,774,000	$ 4,940,000	$ 16,019,000	$ 19,137,000
Contract drilling	248,000	1,212,000	1,668,000	1,918,000
Sale of interest in leasehold land, net		129,000	282,000	482,000
Residential real estate		5,975,000		5,975,000
Gas processing and other	160,000	102,000	533,000	514,000
Total revenues	5,182,000	12,358,000	18,502,000	28,026,000
Costs and expenses:
Oil and natural gas operating	2,406,000	2,442,000	7,448,000	7,975,000
Contract drilling operating	367,000	1,056,000	1,628,000	2,153,000
Residential real estate		5,990,000		5,990,000
General and administrative	2,105,000	1,877,000	6,354,000	6,090,000
Depletion, depreciation, and amortization	1,372,000	2,456,000	6,383,000	8,171,000
Reduction of carrying value of assets			4,506,000	1,854,000
Interest expense	146,000	200,000	442,000	638,000
Total costs and expenses	6,396,000	14,021,000	26,761,000	32,871,000
Loss before income taxes	(1,214,000)	(1,663,000)	(8,259,000)	(4,845,000)
Income tax provision (benefit)	51,000	(262,000)	(1,285,000)	225,000
Net loss	(1,265,000)	(1,401,000)	(6,974,000)	(5,070,000)
Less: Net loss attributable to non-controlling interests	(40,000)	(35,000)	(59,000)	(441,000)
Net loss attributable to Barnwell Industries, Inc.	$ (1,225,000)	$ (1,366,000)	$ (6,915,000)	$ (4,629,000)
Basic net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.15)	$ (0.17)	$ (0.84)	$ (0.56)
Diluted net loss per common share attributable to Barnwell Industries, Inc. stockholders (in dollars per share)	$ (0.15)	$ (0.17)	$ (0.84)	$ (0.56)
Weighted-average number of common shares outstanding:
Basic (in shares)	8,277,160	8,277,160	8,277,160	8,277,160
Diluted (in shares)	8,277,160	8,277,160	8,277,160	8,277,160