Annual report
1514.TEDINET S100YKD1
Period2025-04-01 → 2026-03-31
Filed2026-06-25
StandardJapan GAAP
ConsolidatedYes
Data checks24 of 24 passed
Key figures · 154
| Metric | Value | Period | Scope | Source row |
|---|---|---|---|---|
| Revenue | ¥10.7bn | 2025-04-01 → 2026-03-31 | Cons. | Net sales |
| Revenue | ¥10.3bn | 2024-04-01 → 2025-03-31 | Cons. | Net sales |
| Revenue | ¥14.4bn | 2023-04-01 → 2024-03-31v | Cons. | Net sales (5-year summary) |
| Revenue | ¥36.3bn | 2022-04-01 → 2023-03-31v | Cons. | Net sales (5-year summary) |
| Revenue | ¥10.3bn | 2021-04-01 → 2022-03-31v | Cons. | Net sales (5-year summary) |
| Operating income | ¥329m | 2025-04-01 → 2026-03-31 | Cons. | Operating income |
| Operating income | ¥48m | 2024-04-01 → 2025-03-31 | Cons. | Operating income |
| Ordinary income | ¥2.8bn | 2025-04-01 → 2026-03-31 | Cons. | Ordinary income |
| Ordinary income | ¥4.7bn | 2024-04-01 → 2025-03-31 | Cons. | Ordinary income |
| Ordinary income | ¥8.1bn | 2023-04-01 → 2024-03-31v | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥3.7bn | 2022-04-01 → 2023-03-31v | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥2.4bn | 2021-04-01 → 2022-03-31v | Cons. | Ordinary income loss (5-year summary) |
| Profit before tax | ¥2.8bn | 2025-04-01 → 2026-03-31 | Cons. | Income before income taxes |
| Profit before tax | ¥4.2bn | 2024-04-01 → 2025-03-31 | Cons. | Income before income taxes |
| Net income (owners) | ¥2.6bn | 2025-04-01 → 2026-03-31 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥4.2bn | 2024-04-01 → 2025-03-31 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥7.5bn | 2023-04-01 → 2024-03-31v | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥3.7bn | 2022-04-01 → 2023-03-31v | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥2.3bn | 2021-04-01 → 2022-03-31v | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income | ¥2.6bn | 2025-04-01 → 2026-03-31 | Cons. | Profit loss |
| Net income | ¥4.2bn | 2024-04-01 → 2025-03-31 | Cons. | Profit loss |
| Total assets | ¥32.2bn | at 2026-03-31 | Cons. | Assets |
| Total assets | ¥29.0bn | at 2025-03-31 | Cons. | Assets |
| Total assets | ¥31.1bn | at 2024-03-31v | Cons. | Total assets (5-year summary) |
| Total assets | ¥26.1bn | at 2023-03-31v | Cons. | Total assets (5-year summary) |
| Total assets | ¥21.6bn | at 2022-03-31v | Cons. | Total assets (5-year summary) |
| Total liabilities | ¥3.0bn | at 2026-03-31 | Cons. | Liabilities |
| Total liabilities | ¥1.0bn | at 2025-03-31 | Cons. | Liabilities |
| Net assets / equity | ¥29.1bn | at 2026-03-31 | Cons. | Net assets |
| Net assets / equity | ¥28.0bn | at 2025-03-31 | Cons. | Net assets |
| Net assets / equity | ¥27.0bn | at 2024-03-31v | Cons. | Net assets |
| Net assets / equity | ¥20.4bn | at 2023-03-31v | Cons. | Net assets (5-year summary) |
| Net assets / equity | ¥17.4bn | at 2022-03-31v | Cons. | Net assets (5-year summary) |
| Cash and deposits | ¥10.9bn | at 2026-03-31 | Cons. | Cash and deposits |
| Cash and deposits | ¥15.4bn | at 2025-03-31 | Cons. | Cash and deposits |
| Cash & equivalents | ¥16.9bn | at 2026-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥15.4bn | at 2025-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥18.7bn | at 2024-03-31v | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥3.9bn | at 2023-03-31v | Cons. | Cash and cash equivalents (5-year summary) |
| Cash & equivalents | ¥3.4bn | at 2022-03-31v | Cons. | Cash and cash equivalents (5-year summary) |
| Operating cash flow | ¥4.6bn | 2025-04-01 → 2026-03-31 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥26m | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥18.8bn | 2023-04-01 → 2024-03-31v | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | ¥53m | 2022-04-01 → 2023-03-31v | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | −¥3.0bn | 2021-04-01 → 2022-03-31v | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Investing cash flow | −¥1.2bn | 2025-04-01 → 2026-03-31 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥216m | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥11m | 2023-04-01 → 2024-03-31v | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | −¥22m | 2022-04-01 → 2023-03-31v | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | ¥445m | 2021-04-01 → 2022-03-31v | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Financing cash flow | −¥1.8bn | 2025-04-01 → 2026-03-31 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥3.2bn | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥4.0bn | 2023-04-01 → 2024-03-31v | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | ¥504m | 2022-04-01 → 2023-03-31v | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | ¥1.4bn | 2021-04-01 → 2022-03-31v | Cons. | Net cash provided by used in financing activities (5-year summary) |
| EPS (basic) | ¥44.11 | 2025-04-01 → 2026-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥76.76 | 2024-04-01 → 2025-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥144.7 | 2023-04-01 → 2024-03-31v | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥68.31 | 2022-04-01 → 2023-03-31v | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥41.02 | 2021-04-01 → 2022-03-31v | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (diluted) | ¥124.94 | 2023-04-01 → 2024-03-31v | Cons. | Diluted earnings per share (5-year summary) |
| EPS (diluted) | ¥59.33 | 2022-04-01 → 2023-03-31v | Cons. | Diluted earnings per share (5-year summary) |
| EPS (diluted) | ¥35.85 | 2021-04-01 → 2022-03-31v | Cons. | Diluted earnings per share (5-year summary) |
| Net assets per share | ¥487.28 | at 2026-03-31 | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥468.75 | at 2025-03-31 | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥475.82 | at 2024-03-31v | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥335.34 | at 2023-03-31v | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥269.67 | at 2022-03-31v | Cons. | Net assets per share (5-year summary) |
| Equity ratio | 90.6% | at 2026-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 96.5% | at 2025-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 86.7% | at 2024-03-31v | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 77.9% | at 2023-03-31v | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 80.4% | at 2022-03-31v | Cons. | Equity to asset ratio (5-year summary) |
| ROE | 9.2% | 2025-04-01 → 2026-03-31 | Cons. | Rate of return on equity (5-year summary) |
| ROE | 15.3% | 2024-04-01 → 2025-03-31 | Cons. | Rate of return on equity (5-year summary) |
| ROE | 31.8% | 2023-04-01 → 2024-03-31v | Cons. | Rate of return on equity (5-year summary) |
| ROE | 19.4% | 2022-04-01 → 2023-03-31v | Cons. | Rate of return on equity (5-year summary) |
| ROE | 14.0% | 2021-04-01 → 2022-03-31v | Cons. | Rate of return on equity (5-year summary) |
| Employees | 40 | at 2026-03-31 | Cons. | Number of employees |
| Employees | 39 | at 2025-03-31 | Cons. | Number of employees |
| Employees | 46 | at 2024-03-31v | Cons. | Number of employees |
| Employees | 45 | at 2023-03-31v | Cons. | Number of employees |
| Employees | 45 | at 2022-03-31v | Cons. | Number of employees |
| Revenue | ¥202m | 2025-04-01 → 2026-03-31 | Standalone | Net sales |
| Revenue | ¥233m | 2024-04-01 → 2025-03-31 | Standalone | Net sales |
| Revenue | ¥207m | 2023-04-01 → 2024-03-31v | Standalone | Net sales (5-year summary) |
| Revenue | ¥203m | 2022-04-01 → 2023-03-31v | Standalone | Net sales (5-year summary) |
| Revenue | ¥208m | 2021-04-01 → 2022-03-31v | Standalone | Net sales (5-year summary) |
| Operating income | −¥195m | 2025-04-01 → 2026-03-31 | Standalone | Operating income |
| Operating income | −¥214m | 2024-04-01 → 2025-03-31 | Standalone | Operating income |
| Ordinary income | ¥4.2bn | 2025-04-01 → 2026-03-31 | Standalone | Ordinary income |
| Ordinary income | ¥8.0bn | 2024-04-01 → 2025-03-31 | Standalone | Ordinary income |
| Ordinary income | ¥3.1bn | 2023-04-01 → 2024-03-31v | Standalone | Ordinary income loss (5-year summary) |
| Ordinary income | ¥2.0bn | 2022-04-01 → 2023-03-31v | Standalone | Ordinary income loss (5-year summary) |
| Ordinary income | ¥72m | 2021-04-01 → 2022-03-31v | Standalone | Ordinary income loss (5-year summary) |
| Profit before tax | ¥4.2bn | 2025-04-01 → 2026-03-31 | Standalone | Income before income taxes |
| Profit before tax | ¥8.0bn | 2024-04-01 → 2025-03-31 | Standalone | Income before income taxes |
| Net income | ¥4.3bn | 2025-04-01 → 2026-03-31 | Standalone | Profit loss |
| Net income | ¥8.0bn | 2024-04-01 → 2025-03-31 | Standalone | Profit loss |
| Net income | ¥3.2bn | 2023-04-01 → 2024-03-31v | Standalone | Net income loss (5-year summary) |
| Net income | ¥2.1bn | 2022-04-01 → 2023-03-31v | Standalone | Net income loss (5-year summary) |
| Net income | ¥407m | 2021-04-01 → 2022-03-31v | Standalone | Net income loss (5-year summary) |
| Total assets | ¥22.5bn | at 2026-03-31 | Standalone | Assets |
| Total assets | ¥20.0bn | at 2025-03-31 | Standalone | Assets |
| Total assets | ¥15.1bn | at 2024-03-31v | Standalone | Total assets (5-year summary) |
| Total assets | ¥16.5bn | at 2023-03-31v | Standalone | Total assets (5-year summary) |
| Total assets | ¥11.5bn | at 2022-03-31v | Standalone | Total assets (5-year summary) |
| Total liabilities | ¥147m | at 2026-03-31 | Standalone | Liabilities |
| Total liabilities | ¥99m | at 2025-03-31 | Standalone | Liabilities |
| Net assets / equity | ¥22.4bn | at 2026-03-31 | Standalone | Net assets |
| Net assets / equity | ¥19.9bn | at 2025-03-31 | Standalone | Net assets |
| Net assets / equity | ¥14.9bn | at 2024-03-31v | Standalone | Net assets |
| Net assets / equity | ¥12.8bn | at 2023-03-31v | Standalone | Net assets (5-year summary) |
| Net assets / equity | ¥11.3bn | at 2022-03-31v | Standalone | Net assets (5-year summary) |
| Cash and deposits | ¥8.1bn | at 2026-03-31 | Standalone | Cash and deposits |
| Cash and deposits | ¥10.6bn | at 2025-03-31 | Standalone | Cash and deposits |
| EPS (basic) | ¥71.39 | 2025-04-01 → 2026-03-31 | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥147.04 | 2024-04-01 → 2025-03-31 | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥61.79 | 2023-04-01 → 2024-03-31v | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥38.49 | 2022-04-01 → 2023-03-31v | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥7.16 | 2021-04-01 → 2022-03-31v | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (diluted) | ¥53.49 | 2023-04-01 → 2024-03-31v | Standalone | Diluted earnings per share (5-year summary) |
| EPS (diluted) | ¥33.53 | 2022-04-01 → 2023-03-31v | Standalone | Diluted earnings per share (5-year summary) |
| EPS (diluted) | ¥6.44 | 2021-04-01 → 2022-03-31v | Standalone | Diluted earnings per share (5-year summary) |
| Dividend per share | ¥20 | 2025-04-01 → 2026-03-31 | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥30 | 2024-04-01 → 2025-03-31 | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥60 | 2023-04-01 → 2024-03-31v | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥7.5 | 2022-04-01 → 2023-03-31v | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥5 | 2021-04-01 → 2022-03-31v | Standalone | Dividend paid per share (5-year summary) |
| Net assets per share | ¥374.44 | at 2026-03-31 | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥332.87 | at 2025-03-31 | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥241.62 | at 2024-03-31v | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥192.69 | at 2023-03-31v | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥160.06 | at 2022-03-31v | Standalone | Net assets per share (5-year summary) |
| Equity ratio | 99.3% | at 2026-03-31 | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 99.5% | at 2025-03-31 | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 98.7% | at 2024-03-31v | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 77.3% | at 2023-03-31v | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 98.7% | at 2022-03-31v | Standalone | Equity to asset ratio (5-year summary) |
| ROE | 20.2% | 2025-04-01 → 2026-03-31 | Standalone | Rate of return on equity (5-year summary) |
| ROE | 46.1% | 2024-04-01 → 2025-03-31 | Standalone | Rate of return on equity (5-year summary) |
| ROE | 23.3% | 2023-04-01 → 2024-03-31v | Standalone | Rate of return on equity (5-year summary) |
| ROE | 17.2% | 2022-04-01 → 2023-03-31v | Standalone | Rate of return on equity (5-year summary) |
| ROE | 3.6% | 2021-04-01 → 2022-03-31v | Standalone | Rate of return on equity (5-year summary) |
| Shares issued | 67,222,853 | at 2026-03-31 | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 67,222,853 | at 2025-03-31 | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 58,892,853 | at 2024-03-31v | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 58,892,853 | at 2023-03-31v | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 58,892,853 | at 2022-03-31v | Standalone | Total number of issued shares (5-year summary) |
| Employees | 11 | at 2026-03-31 | Standalone | Number of employees |
| Employees | 10 | at 2025-03-31 | Standalone | Number of employees |
| Employees | 14 | at 2024-03-31v | Standalone | Number of employees |
| Employees | 15 | at 2023-03-31v | Standalone | Number of employees |
| Employees | 12 | at 2022-03-31v | Standalone | Number of employees |
Periods use the dates stated in the filing. d = earlier-year period dated by calendar; v = that date confirmed by the company's own earlier filing.
Segments · 52
| Segment | Item | Period | Value |
|---|---|---|---|
| Coal Business Divisionreportable segment | capex | 2025-04-01 → 2026-03-31 | ¥26m |
| Coal Business Divisionreportable segment | depreciation | 2025-04-01 → 2026-03-31 | ¥52m |
| Coal Business Divisionreportable segment | employees | at 2026-03-31 | 8 pure |
| Coal Business Divisionreportable segment | revenue | 2025-04-01 → 2026-03-31 | ¥10.0bn |
| Coal Business Divisionreportable segment | revenue external | 2025-04-01 → 2026-03-31 | ¥10.0bn |
| Coal Business Divisionreportable segment | segment assets | at 2026-03-31 | ¥6.7bn |
| Coal Business Divisionreportable segment | segment ordinary income | 2025-04-01 → 2026-03-31 | ¥551m |
| DIAMONNDO Divisionreportable segment | capex | 2025-04-01 → 2026-03-31 | ¥41m |
| DIAMONNDO Divisionreportable segment | depreciation | 2025-04-01 → 2026-03-31 | ¥11m |
| DIAMONNDO Divisionreportable segment | employees | at 2026-03-31 | 7 pure |
| DIAMONNDO Divisionreportable segment | revenue | 2025-04-01 → 2026-03-31 | ¥267m |
| DIAMONNDO Divisionreportable segment | revenue external | 2025-04-01 → 2026-03-31 | ¥267m |
| DIAMONNDO Divisionreportable segment | segment assets | at 2026-03-31 | ¥374m |
| DIAMONNDO Divisionreportable segment | segment ordinary income | 2025-04-01 → 2026-03-31 | ¥66m |
| Quarrying Business Divisionreportable segment | capex | 2025-04-01 → 2026-03-31 | ¥12m |
| Quarrying Business Divisionreportable segment | depreciation | 2025-04-01 → 2026-03-31 | ¥67m |
| Quarrying Business Divisionreportable segment | employees | at 2026-03-31 | 14 pure |
| Quarrying Business Divisionreportable segment | revenue | 2025-04-01 → 2026-03-31 | ¥436m |
| Quarrying Business Divisionreportable segment | revenue external | 2025-04-01 → 2026-03-31 | ¥436m |
| Quarrying Business Divisionreportable segment | segment assets | at 2026-03-31 | ¥372m |
| Quarrying Business Divisionreportable segment | segment ordinary income | 2025-04-01 → 2026-03-31 | ¥120m |
| —segment total | employees | at 2026-03-31 | 29 pure |
| Total Of Reportable Segments And Otherssegment total | capex | 2025-04-01 → 2026-03-31 | ¥79m |
| Total Of Reportable Segments And Otherssegment total | depreciation | 2025-04-01 → 2026-03-31 | ¥130m |
| Total Of Reportable Segments And Otherssegment total | revenue | 2025-04-01 → 2026-03-31 | ¥10.7bn |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2025-04-01 → 2026-03-31 | ¥10.7bn |
| Total Of Reportable Segments And Otherssegment total | segment assets | at 2026-03-31 | ¥7.5bn |
| Total Of Reportable Segments And Otherssegment total | segment ordinary income | 2025-04-01 → 2026-03-31 | ¥736m |
| Coal Business Divisionreportable segment | capex | 2024-04-01 → 2025-03-31 | ¥25m |
| Coal Business Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥47m |
| Coal Business Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥9.6bn |
| Coal Business Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥9.6bn |
| Coal Business Divisionreportable segment | segment assets | at 2025-03-31 | ¥6.0bn |
| Coal Business Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥469m |
| DIAMONNDO Divisionreportable segment | capex | 2024-04-01 → 2025-03-31 | ¥10m |
| DIAMONNDO Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥6m |
| DIAMONNDO Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥278m |
| DIAMONNDO Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥278m |
| DIAMONNDO Divisionreportable segment | segment assets | at 2025-03-31 | ¥244m |
| DIAMONNDO Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥70m |
| Quarrying Business Divisionreportable segment | capex | 2024-04-01 → 2025-03-31 | ¥164m |
| Quarrying Business Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥65m |
| Quarrying Business Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥429m |
| Quarrying Business Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥429m |
| Quarrying Business Divisionreportable segment | segment assets | at 2025-03-31 | ¥445m |
| Quarrying Business Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥107m |
| Total Of Reportable Segments And Otherssegment total | capex | 2024-04-01 → 2025-03-31 | ¥199m |
| Total Of Reportable Segments And Otherssegment total | depreciation | 2024-04-01 → 2025-03-31 | ¥118m |
| Total Of Reportable Segments And Otherssegment total | revenue | 2024-04-01 → 2025-03-31 | ¥10.3bn |
| Total Of Reportable Segments And Otherssegment total | revenue external | 2024-04-01 → 2025-03-31 | ¥10.3bn |
| Total Of Reportable Segments And Otherssegment total | segment assets | at 2025-03-31 | ¥6.6bn |
| Total Of Reportable Segments And Otherssegment total | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥646m |
Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.
All source rows · 1,401
| Item | Context | Value | Unit |
|---|---|---|---|
| Net cash provided by used in financing activities | CurrentYearDuration | -1822000000 | JPY |
| Effect of exchange rate change on cash and cash equivalents | Prior1YearDuration | -1000000 | JPY |
| Effect of exchange rate change on cash and cash equivalents | CurrentYearDuration | 4000000 | JPY |
| Net increase decrease in cash and cash equivalents | Prior1YearDuration | -3365000000 | JPY |
| Net increase decrease in cash and cash equivalents | CurrentYearDuration | 1573000000 | JPY |
| Cash and cash equivalents | Prior2YearInstant | 18717000000 | JPY |
| Cash and cash equivalents | Prior1YearInstant | 15351000000 | JPY |
| Cash and cash equivalents | Prior1YearInstant | 15351000000 | JPY |
| Cash and cash equivalents | CurrentYearInstant | 16924000000 | JPY |
| Number of consolidated subsidiaries | CurrentYearInstant | 4 | |
| Number of associates accounted for using equity method | CurrentYearInstant | 2 | |
| Transportation and warehousing expenses sga | Prior1YearDuration | 431000000 | JPY |
| Transportation and warehousing expenses sga | CurrentYearDuration | 834000000 | JPY |
| Executive compensation employee salaries and bonuses sga | Prior1YearDuration | 395000000 | JPY |
| Executive compensation employee salaries and bonuses sga | CurrentYearDuration | 372000000 | JPY |
| Retirement benefit expenses sga | Prior1YearDuration | 8000000 | JPY |
| Retirement benefit expenses sga | CurrentYearDuration | 6000000 | JPY |
| Rent expenses sga | Prior1YearDuration | 54000000 | JPY |
| Rent expenses sga | CurrentYearDuration | 54000000 | JPY |
| Utilities expenses sga | Prior1YearDuration | 22000000 | JPY |
| Utilities expenses sga | CurrentYearDuration | 21000000 | JPY |
| Traveling and communication expenses sga | Prior1YearDuration | 24000000 | JPY |
| Traveling and communication expenses sga | CurrentYearDuration | 23000000 | JPY |
| Depreciation sga | Prior1YearDuration | 56000000 | JPY |
| Depreciation sga | CurrentYearDuration | 66000000 | JPY |
| Research and development expenses sga | Prior1YearDuration | － | JPY |
| Research and development expenses sga | CurrentYearDuration | 5000000 | JPY |
| Revenues from external customers | Prior1YearDuration_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | 9558000000 | JPY |
| Revenues from external customers | Prior1YearDuration_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | 278000000 | JPY |
| Revenues from external customers | Prior1YearDuration_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | 429000000 | JPY |
| Revenues from external customers | Prior1YearDuration_TotalOfReportableSegmentsAndOthersMember | 10264000000 | JPY |
| Transactions with other segments | Prior1YearDuration_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | － | JPY |
| Transactions with other segments | Prior1YearDuration_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | － | JPY |
| Transactions with other segments | Prior1YearDuration_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | － | JPY |
| Transactions with other segments | Prior1YearDuration_TotalOfReportableSegmentsAndOthersMember | － | JPY |
| Net sales | Prior1YearDuration_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | 9558000000 | JPY |
| Net sales | Prior1YearDuration_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | 278000000 | JPY |
| Net sales | Prior1YearDuration_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | 429000000 | JPY |
| Net sales | Prior1YearDuration_TotalOfReportableSegmentsAndOthersMember | 10264000000 | JPY |
| Ordinary income | Prior1YearDuration_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | 469000000 | JPY |
| Ordinary income | Prior1YearDuration_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | 70000000 | JPY |
| Ordinary income | Prior1YearDuration_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | 107000000 | JPY |
| Ordinary income | Prior1YearDuration_TotalOfReportableSegmentsAndOthersMember | 646000000 | JPY |
| Assets | Prior1YearInstant_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | 5951000000 | JPY |
| Assets | Prior1YearInstant_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | 244000000 | JPY |
| Assets | Prior1YearInstant_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | 445000000 | JPY |
| Assets | Prior1YearInstant_TotalOfReportableSegmentsAndOthersMember | 6640000000 | JPY |
| Liabilities | Prior1YearInstant_jpcrp030000-asr_E21342-000CoalBusinessDivisionReportableSegmentsMember | 6468000000 | JPY |
| Liabilities | Prior1YearInstant_jpcrp030000-asr_E21342-000DIAMONNDODivisionReportableSegmentsMember | 22000000 | JPY |
| Liabilities | Prior1YearInstant_jpcrp030000-asr_E21342-000QuarryingBusinessDivisionReportableSegmentsMember | 182000000 | JPY |
Every row of the EDINET CSV. Item names are the XBRL element names; filed text is kept in its original Japanese. Filed text is available on Plus and Pro.
Data checks · 24 of 24 passed
| balance sheet identity | pass |
| balance sheet identity | pass rounding |
| balance sheet identity | pass |
| balance sheet identity | pass |
| dei present | pass |
| period resolution | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net assets | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · net income attributable to parent | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · operating cash flow | pass |
| statement vs summary · revenue | pass |
| statement vs summary · revenue | pass |
| statement vs summary · revenue | pass |
| statement vs summary · revenue | pass |
| statement vs summary · total assets | pass |
| statement vs summary · total assets | pass |
| statement vs summary · total assets | pass |
| statement vs summary · total assets | pass |