OIL AND NATURAL GAS PROPERTIES	9 Months Ended
Jun. 30, 2019
Oil and Natural Gas Properties [Abstract]
OIL AND NATURAL GAS PROPERTIES	OIL AND NATURAL GAS PROPERTIES Dispositions In October 2017, Barnwell entered into a Purchase and Sale Agreement with an independent third party and sold its oil and natural gas properties located in the Pouce Coupe area of Alberta, Canada. The sales price per the agreement was adjusted to $79,000 for customary purchase price adjustments to reflect the economic activity from the effective date of May 1, 2017 to the closing date. From Barnwell's net proceeds, $37,000 was withheld and remitted by the buyer to the Canada Revenue Agency for potential amounts due for Barnwell’s Canadian income taxes. No gain or loss was recognized on this sale as it did not result in a significant alteration of the relationship between capitalized costs and proved reserves. Proceeds from the disposition were credited to the full cost pool. In February 2018, Barnwell sold its oil properties located in the Red Earth area of Alberta, Canada. As a result of the significant impact that the sale of Red Earth had on the relationship between capitalized costs and proved reserves of the sold property and retained properties, Barnwell did not credit the sales proceeds to the full cost pool, but instead calculated a gain on the sale of Red Earth of $2,135,000 which was recognized in the nine months ended June 30, 2018, in accordance with the guidance in Rule 4-10(c)(6)(i) of Regulation S-X. Also included in gain on sales of assets for the nine months ended June 30, 2018 is a $115,000 gain on the sale of Barnwell's interest in natural gas transmission lines and related surface facilities in the Stolberg area in February 2018. There were no such gains or losses on sales of operating assets recognized in the current year. The $1,519,000 of proceeds from sale of oil and gas properties included in the Condensed Consolidated Statement of Cash Flows for the nine months ended June 30, 2019, primarily represents the refund of income taxes previously withheld from what otherwise would have been proceeds on prior years' oil and gas property sales. Acquisitions During the quarter ended December 31, 2018, Barnwell acquired additional working interests in oil and natural gas properties located in the Wood River and Twining areas of Alberta, Canada for cash consideration of $355,000. The purchase prices per the agreements were adjusted for customary purchase price adjustments to reflect the economic activity from the effective date to the closing date. The customary adjustments to the purchase prices were finalized during the quarter ended June 30, 2019, and resulted in an immaterial adjustment. There were no other oil and natural gas property acquisitions during the nine months ended June 30, 2019. Impairment of Oil and Natural Gas Properties Under the full cost method of accounting, the Company performs quarterly oil and natural gas ceiling test calculations. There was no ceiling test impairment during the three months ended June 30, 2019. There was a ceiling test impairment of $2,413,000 during the nine months ended June 30, 2019 as a result of the December 31, 2018 and March 31, 2019 ceiling tests. There were no ceiling test impairments in the same periods of the prior year. Changes in the 12-month rolling average first-day-of-the-month prices for oil, natural gas and natural gas liquids prices, the value of reserve additions as compared to the amount of capital expenditures to obtain them, and changes in production rates and estimated levels of reserves, future development costs and the market value of unproved properties, impact the determination of the maximum carrying value of oil and natural gas properties. Based on the 12-month rolling average first-day-of-the-month prices for July and August 2019, it is reasonably possible that we will incur a further ceiling test impairment in the Company's fourth quarter ending September 30, 2019. The Company is currently unable to estimate a range of the amount of any potential future reduction in carrying value as variables that impact the ceiling limitation are dependent upon actual results through the end of September 2019. In addition, the ceiling test is also impacted by any changes in management's quarterly evaluation of the Company's ability to fund the approximately $14,000,000 of future capital expenditures necessary over the next five years to develop the proved undeveloped reserves that are largely in the Twining area, the value of which is included in the calculation of the ceiling limitation. If facts, circumstances, estimates and assumptions underlying management's assessment of the Company's ability to fund such capital expenditures change such that it is no longer reasonably certain that all of the approximately $14,000,000 of capital expenditures necessary to develop the proved undeveloped reserves can be made, it is likely that we will incur a further ceiling test impairment at that time.

OIL AND NATURAL GAS PROPERTIES

Dispositions

In October 2017, Barnwell entered into a Purchase and Sale Agreement with an independent third party and sold its oil and natural gas properties located in the Pouce Coupe area of Alberta, Canada. The sales price per the agreement was adjusted to $79,000 for customary purchase price adjustments to reflect the economic activity from the effective date of May 1, 2017 to the closing date. From Barnwell's net proceeds, $37,000 was withheld and remitted by the buyer to the Canada Revenue Agency for potential amounts due for Barnwell’s Canadian income taxes. No gain or loss was recognized on this sale as it did not result in a significant alteration of the relationship between capitalized costs and proved reserves. Proceeds from the disposition were credited to the full cost pool.

In February 2018, Barnwell sold its oil properties located in the Red Earth area of Alberta, Canada. As a result of the significant impact that the sale of Red Earth had on the relationship between capitalized costs and proved reserves of the sold property and retained properties, Barnwell did not credit the sales proceeds to the full cost pool, but instead calculated a gain on the sale of Red Earth of $2,135,000 which was recognized in the nine months ended June 30, 2018, in accordance with the guidance in Rule 4-10(c)(6)(i) of Regulation S-X.

Also included in gain on sales of assets for the nine months ended June 30, 2018 is a $115,000 gain on the sale of Barnwell's interest in natural gas transmission lines and related surface facilities in the Stolberg area in February 2018.

There were no such gains or losses on sales of operating assets recognized in the current year.

The $1,519,000 of proceeds from sale of oil and gas properties included in the Condensed Consolidated Statement of Cash Flows for the nine months ended June 30, 2019, primarily represents the refund of income taxes previously withheld from what otherwise would have been proceeds on prior years' oil and gas property sales.

Acquisitions

During the quarter ended December 31, 2018, Barnwell acquired additional working interests in oil and natural gas properties located in the Wood River and Twining areas of Alberta, Canada for cash consideration of $355,000. The purchase prices per the agreements were adjusted for customary purchase price adjustments to reflect the economic activity from the effective date to the closing date. The customary adjustments to the purchase prices were finalized during the quarter ended June 30, 2019, and resulted in an immaterial adjustment.

There were no other oil and natural gas property acquisitions during the nine months ended June 30, 2019.

Impairment of Oil and Natural Gas Properties

Under the full cost method of accounting, the Company performs quarterly oil and natural gas ceiling test calculations. There was no ceiling test impairment during the three months ended June 30, 2019. There was a ceiling test impairment of $2,413,000 during the nine months ended June 30, 2019 as a result of the December 31, 2018 and March 31, 2019 ceiling tests. There were no ceiling test impairments in the same periods of the prior year.

Changes in the 12-month rolling average first-day-of-the-month prices for oil, natural gas and natural gas liquids prices, the value of reserve additions as compared to the amount of capital expenditures to obtain them, and changes in production rates and estimated levels of reserves, future development costs and the market value of unproved properties, impact the determination of the maximum carrying value of oil and natural gas properties. Based on the 12-month rolling average first-day-of-the-month prices for July and August 2019, it is reasonably possible that we will incur a further ceiling test impairment in the Company's fourth quarter ending September 30, 2019. The Company is currently unable to estimate a range of the amount of any potential future reduction in carrying value as variables that impact the ceiling limitation are dependent upon actual results through the end of September 2019.

In addition, the ceiling test is also impacted by any changes in management's quarterly evaluation of the Company's ability to fund the approximately $14,000,000 of future capital expenditures necessary over the next five years to develop the proved undeveloped reserves that are largely in the Twining area, the value of which is included in the calculation of the ceiling limitation. If facts, circumstances, estimates and assumptions underlying management's assessment of the Company's ability to fund such capital expenditures change such that it is no longer reasonably certain that all of the approximately $14,000,000 of capital expenditures necessary to develop the proved undeveloped reserves can be made, it is likely that we will incur a further ceiling test impairment at that time.