v3.26.1
SEGMENT INFORMATION - REPORTING SEGMENTS (Details)
 3 Months Ended 6 Months Ended
Mar. 31, 2026
USD ($)
Mar. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
segment
Mar. 31, 2025
USD ($)
Segment information        
Number of reportable segments | segment     2  
Number of operating segments | segment     2  
Revenues:        
Revenue before interest income $ 2,497,000 $ 3,565,000 $ 5,228,000 $ 7,473,000
Interest income 38,000 4,000 53,000 30,000
Total revenues 2,535,000 3,569,000 5,281,000 7,503,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 561,000 754,000 1,153,000 1,658,000
Impairment:        
Impairment of assets 0 52,000 0 665,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) 93,000 773,000 161,000 668,000
Equity in income of affiliates 338,000 0 338,000 0
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 0 (1,000) 0 (1,000)
Interest income 38,000 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)
Intersegment eliminations | External Customer        
Revenues:        
Total revenues     0  
Oil and natural gas        
Revenues:        
Revenue before interest income 2,483,000 3,543,000 5,113,000 7,440,000
Total revenues 2,483,000 3,543,000 5,113,000 7,440,000
Costs and expenses:        
Oil and natural gas operating 1,843,000 1,986,000 3,914,000 4,482,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 553,000 753,000 1,144,000 1,657,000
Impairment:        
Impairment of assets 0 52,000 0 665,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) 87,000 752,000 55,000 636,000
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 14,000 22,000 45,000 33,000
Total revenues 52,000 26,000 98,000 63,000
Depletion, depreciation, and amortization:        
Depletion, depreciation, and amortization 8,000 1,000 9,000 1,000
Operating profit (before general and administrative expenses):        
Operating profit (before general and administrative expenses) $ 6,000 $ 21,000 $ 36,000 $ 32,000