v3.26.1
SEGMENT INFORMATION - REPORTING SEGMENTS (Details)
 3 Months Ended 9 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Segment information        
Number of reportable segments | segment     2  
Number of operating segments | segment     2  
Revenues:        
Revenue before interest income $ 3,367,000 $ 3,178,000 $ 8,595,000 $ 10,651,000
Interest income 12,000 14,000 65,000 44,000
Total revenues 3,379,000 3,192,000 8,660,000 10,695,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 546,000 844,000 1,699,000 2,502,000
Impairment:        
Impairment of assets 0 200,000 0 865,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) 783,000 52,000 944,000 720,000
Equity in income of affiliates 376,000 0 714,000 0
General and administrative expenses (1,409,000) (1,868,000) (4,546,000) (5,193,000)
Foreign currency gain (loss) (56,000) 219,000 (67,000) (122,000)
Interest expense (1,000) (4,000) (1,000) (5,000)
Interest income 12,000 14,000 65,000 44,000
Loss from continuing operations before income taxes (295,000) (1,587,000) (2,891,000) (4,556,000)
Intersegment eliminations | External Customer        
Revenues:        
Total revenues     0  
Oil and natural gas        
Revenues:        
Revenue before interest income 3,341,000 3,153,000 8,454,000 10,593,000
Total revenues 3,341,000 3,153,000 8,454,000 10,593,000
Costs and expenses:        
Oil and natural gas operating 2,038,000 2,082,000 5,952,000 6,564,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 546,000 844,000 1,690,000 2,501,000
Impairment:        
Impairment of assets 0 200,000 0 865,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) 757,000 27,000 812,000 663,000
Land investment        
Revenues:        
Revenue before interest income 0 0 70,000 0
Total revenues 0 0 70,000 0
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) 0 0 70,000 0
Other        
Revenues:        
Revenue before interest income 26,000 25,000 71,000 58,000
Total revenues 38,000 39,000 136,000 102,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 0 0 9,000 1,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) $ 26,000 $ 25,000 $ 62,000 $ 57,000