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SEGMENT INFORMATION
 6 Months Ended
Mar. 31, 2026
Segment Reporting [Abstract]  
SEGMENT INFORMATION SEGMENT INFORMATION
 
As disclosed in Note 3 “Discontinued Operations,” on March 14, 2025, the Company completed the sale of Water Resources, which represented the Company’s contract drilling segment. The financial results of the Company’s contract drilling business has been presented as discontinued operations and therefore is excluded from segment reporting. Accordingly, Barnwell’s continuing operations include the following two principal business segments:

Oil and Natural Gas Segment - Barnwell engages in oil and natural gas development, production, acquisitions and sales in Canada. Additionally, through its wholly-owned subsidiaries, Barnwell was, until August 8, 2025, involved in several non-operated oil and natural gas investments in Oklahoma and Texas.

Land Investment Segment - Barnwell owns leasehold land interests in Hawaii.
The following table presents certain financial information related to Barnwell’s reporting segments. All revenues reported are from external customers with no intersegment sales or transfers.
Three months ended
March 31,		Six months ended
March 31,
 2026202520262025
Revenues:
Oil and natural gas$2,483,000 $3,543,000 $5,113,000 $7,440,000 
Land investment— — 70,000 — 
Other14,000 22,000 45,000 33,000 
Total before interest income2,497,000 3,565,000 5,228,000 7,473,000 
Interest income38,000 4,000 53,000 30,000 
Total revenues$2,535,000 $3,569,000 $5,281,000 $7,503,000 
Cost and expenses:
Oil and natural gas$1,843,000 $1,986,000 $3,914,000 $4,482,000 
Depletion, depreciation, and amortization:  
Oil and natural gas$553,000 $753,000 $1,144,000 $1,657,000 
Other8,000 1,000 9,000 1,000 
Total depletion, depreciation, and amortization$561,000 $754,000 $1,153,000 $1,658,000 
Impairment:
Oil and natural gas$— $52,000 $— $665,000 
Operating profit (before general and administrative expenses):  
Oil and natural gas$87,000 $752,000 $55,000 $636,000 
Land investment— — 70,000 — 
Other6,000 21,000 36,000 32,000 
Total operating profit93,000 773,000 161,000 668,000 
Equity in income of affiliates:  
Land investment338,000 — 338,000 — 
General and administrative expenses(1,521,000)(2,162,000)(3,137,000)(3,325,000)
Foreign currency gain (loss)(58,000)(10,000)(11,000)(341,000)
Interest expense— 1,000 — (1,000)
Interest income38,000 4,000 53,000 30,000 
Loss from continuing operations before income taxes$(1,110,000)$(1,376,000)$(2,596,000)$(2,969,000)

Capital Expenditures:
 Six months ended March 31,
 20262025
Oil and natural gas$222,000 $112,000 
Other— — 
Total$222,000 $112,000 
    Oil and natural gas capital expenditures include acquisitions as well as changes to capitalized asset retirement obligations, including revisions of asset retirement obligations (see Note 7 for additional details).  

Assets By Segment:
 March 31,
2026		September 30,
2025
Oil and natural gas (1)
Canada$8,516,000 $11,118,000 
Other:
Cash and cash equivalents4,016,000 2,886,000 
Asset for retirement benefits6,184,000 5,928,000 
Corporate and other2,831,000 880,000 
Total$21,547,000 $20,812,000 
______________
(1)          Primarily located in the province of Alberta, Canada.
 
Long-Lived Assets By Geographic Area:
 March 31,
2026		September 30,
2025
United States$6,198,000 $5,965,000 
Canada8,928,000 9,617,000 
Total$15,126,000 $15,582,000 
 
Revenue By Geographic Area:
 Three months ended
March 31,		Six months ended
March 31,
 2026202520262025
United States$— $376,000 $70,000 $731,000 
Canada2,497,000 3,189,000 5,158,000 6,742,000 
Total (before interest income)$2,497,000 $3,565,000 $5,228,000 $7,473,000