| Line Item | Jun 30, 2026 | Mar 31, 2026 | Jun 30, 2025 | Mar 31, 2025 |
|---|---|---|---|---|
| REVENUES | ||||
| Resource sales | — | |||
| Resource sales - related party | — | |||
| Surface use related revenues | — | |||
| Surface use royalties | — | |||
| Surface use royalties - related party | — | |||
| Total revenues | ||||
| COSTS AND EXPENSES | ||||
| Cost of sales (exclusive of depreciation and amortization) | ||||
| Related party cost of sales | ||||
| General and administrative expense | ||||
| Related party general and administrative expense | ||||
| Depreciation and amortization expense | ||||
| Loss (gain) on sale of property, plant and equipment, net | — | |||
| Gain on investment in sales-type lease | ||||
| Total operating expenses | ||||
| % of revenue | 228.0% | 59.1% | ||
| INCOME (LOSS) FROM OPERATIONS | ||||
| % of revenue | -128.0% | 40.9% | ||
| OTHER EXPENSE (INCOME) | ||||
| Interest expense, net | ||||
| Loss (gain) on extinguishment of debt | — | |||
| Total other expense (income) | — | |||
| INCOME (LOSS) BEFORE INCOME TAXES | ||||
| Income tax expense (benefit) | ||||
| NET INCOME (LOSS) | — | |||
| % of revenue | -90.4% | — | ||
| NET INCOME (LOSS) ATTRIBUTABLE TO PREDECESSOR | — | |||
| Less: Net income (loss) attributable to noncontrolling interest | — | |||
| NET INCOME (LOSS) ATTRIBUTABLE TO EAGLEROCK LAND, LLC | ||||
| % of revenue | -18.2% | 14.6% | ||
| Basic net income (loss) per share | ||||
| Dilutive net income (loss) per share |