Annual report
3420.TEDINET S100W1Z6
Period2024-04-01 → 2025-03-31
Filed2025-06-23
StandardJapan GAAP
ConsolidatedYes
Data checks24 of 24 passed
Key figures · 148
| Metric | Value | Period | Scope | Source row |
|---|---|---|---|---|
| Revenue | ¥26.1bn | 2024-04-01 → 2025-03-31 | Cons. | Net sales |
| Revenue | ¥25.1bn | 2023-04-01 → 2024-03-31 | Cons. | Net sales |
| Revenue | ¥22.6bn | 2022-04-01 → 2023-03-31d | Cons. | Net sales (5-year summary) |
| Revenue | ¥26.0bn | 2021-04-01 → 2022-03-31d | Cons. | Net sales (5-year summary) |
| Revenue | ¥27.8bn | 2020-04-01 → 2021-03-31d | Cons. | Net sales (5-year summary) |
| Operating income | ¥1.4bn | 2024-04-01 → 2025-03-31 | Cons. | Operating income |
| Operating income | ¥1.6bn | 2023-04-01 → 2024-03-31 | Cons. | Operating income |
| Ordinary income | ¥1.5bn | 2024-04-01 → 2025-03-31 | Cons. | Ordinary income |
| Ordinary income | ¥1.7bn | 2023-04-01 → 2024-03-31 | Cons. | Ordinary income |
| Ordinary income | ¥1.4bn | 2022-04-01 → 2023-03-31d | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥2.6bn | 2021-04-01 → 2022-03-31d | Cons. | Ordinary income loss (5-year summary) |
| Ordinary income | ¥3.4bn | 2020-04-01 → 2021-03-31d | Cons. | Ordinary income loss (5-year summary) |
| Profit before tax | ¥1.5bn | 2024-04-01 → 2025-03-31 | Cons. | Income before income taxes |
| Profit before tax | ¥1.7bn | 2023-04-01 → 2024-03-31 | Cons. | Income before income taxes |
| Net income (owners) | ¥997m | 2024-04-01 → 2025-03-31 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥1.2bn | 2023-04-01 → 2024-03-31 | Cons. | Profit loss attributable to owners of parent |
| Net income (owners) | ¥1.1bn | 2022-04-01 → 2023-03-31d | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥1.8bn | 2021-04-01 → 2022-03-31d | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income (owners) | ¥2.3bn | 2020-04-01 → 2021-03-31d | Cons. | Profit loss attributable to owners of parent (5-year summary) |
| Net income | ¥997m | 2024-04-01 → 2025-03-31 | Cons. | Profit loss |
| Net income | ¥1.2bn | 2023-04-01 → 2024-03-31 | Cons. | Profit loss |
| Total assets | ¥28.8bn | at 2025-03-31 | Cons. | Assets |
| Total assets | ¥29.6bn | at 2024-03-31 | Cons. | Assets |
| Total assets | ¥26.2bn | at 2023-03-31d | Cons. | Total assets (5-year summary) |
| Total assets | ¥26.2bn | at 2022-03-31d | Cons. | Total assets (5-year summary) |
| Total assets | ¥26.6bn | at 2021-03-31d | Cons. | Total assets (5-year summary) |
| Total liabilities | ¥7.6bn | at 2025-03-31 | Cons. | Liabilities |
| Total liabilities | ¥9.0bn | at 2024-03-31 | Cons. | Liabilities |
| Net assets / equity | ¥21.2bn | at 2025-03-31 | Cons. | Net assets |
| Net assets / equity | ¥20.6bn | at 2024-03-31 | Cons. | Net assets |
| Net assets / equity | ¥19.6bn | at 2023-03-31d | Cons. | Net assets |
| Net assets / equity | ¥19.2bn | at 2022-03-31d | Cons. | Net assets (5-year summary) |
| Net assets / equity | ¥18.1bn | at 2021-03-31d | Cons. | Net assets (5-year summary) |
| Cash and deposits | ¥3.6bn | at 2025-03-31 | Cons. | Cash and deposits |
| Cash and deposits | ¥4.5bn | at 2024-03-31 | Cons. | Cash and deposits |
| Cash & equivalents | ¥4.4bn | at 2025-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥5.4bn | at 2024-03-31 | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥6.0bn | at 2023-03-31d | Cons. | Cash and cash equivalents |
| Cash & equivalents | ¥3.7bn | at 2022-03-31d | Cons. | Cash and cash equivalents (5-year summary) |
| Cash & equivalents | ¥4.4bn | at 2021-03-31d | Cons. | Cash and cash equivalents (5-year summary) |
| Operating cash flow | −¥85m | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥4m | 2023-04-01 → 2024-03-31 | Cons. | Net cash provided by used in operating activities |
| Operating cash flow | ¥3.8bn | 2022-04-01 → 2023-03-31d | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | ¥1.0bn | 2021-04-01 → 2022-03-31d | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Operating cash flow | ¥584m | 2020-04-01 → 2021-03-31d | Cons. | Net cash provided by used in operating activities (5-year summary) |
| Investing cash flow | −¥429m | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥264m | 2023-04-01 → 2024-03-31 | Cons. | Net cash provided by used in investment activities |
| Investing cash flow | −¥958m | 2022-04-01 → 2023-03-31d | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | −¥1.0bn | 2021-04-01 → 2022-03-31d | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Investing cash flow | −¥466m | 2020-04-01 → 2021-03-31d | Cons. | Net cash provided by used in investing activities (5-year summary) |
| Financing cash flow | −¥446m | 2024-04-01 → 2025-03-31 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥372m | 2023-04-01 → 2024-03-31 | Cons. | Net cash provided by used in financing activities |
| Financing cash flow | −¥521m | 2022-04-01 → 2023-03-31d | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | −¥694m | 2021-04-01 → 2022-03-31d | Cons. | Net cash provided by used in financing activities (5-year summary) |
| Financing cash flow | −¥612m | 2020-04-01 → 2021-03-31d | Cons. | Net cash provided by used in financing activities (5-year summary) |
| EPS (basic) | ¥135.53 | 2024-04-01 → 2025-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥159.93 | 2023-04-01 → 2024-03-31 | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥142.95 | 2022-04-01 → 2023-03-31d | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥250.11 | 2021-04-01 → 2022-03-31d | Cons. | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥313.43 | 2020-04-01 → 2021-03-31d | Cons. | Basic earnings loss per share (5-year summary) |
| Net assets per share | ¥2,887.37 | at 2025-03-31 | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥2,801.32 | at 2024-03-31 | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥2,657.3 | at 2023-03-31d | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥2,601.32 | at 2022-03-31d | Cons. | Net assets per share (5-year summary) |
| Net assets per share | ¥2,458.84 | at 2021-03-31d | Cons. | Net assets per share (5-year summary) |
| Equity ratio | 73.7% | at 2025-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 69.6% | at 2024-03-31 | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 74.7% | at 2023-03-31d | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 73.0% | at 2022-03-31d | Cons. | Equity to asset ratio (5-year summary) |
| Equity ratio | 68.1% | at 2021-03-31d | Cons. | Equity to asset ratio (5-year summary) |
| ROE | 4.8% | 2024-04-01 → 2025-03-31 | Cons. | Rate of return on equity (5-year summary) |
| ROE | 5.9% | 2023-04-01 → 2024-03-31 | Cons. | Rate of return on equity (5-year summary) |
| ROE | 5.4% | 2022-04-01 → 2023-03-31d | Cons. | Rate of return on equity (5-year summary) |
| ROE | 9.9% | 2021-04-01 → 2022-03-31d | Cons. | Rate of return on equity (5-year summary) |
| ROE | 13.6% | 2020-04-01 → 2021-03-31d | Cons. | Rate of return on equity (5-year summary) |
| Employees | 327 | at 2025-03-31 | Cons. | Number of employees |
| Employees | 312 | at 2024-03-31 | Cons. | Number of employees |
| Employees | 304 | at 2023-03-31d | Cons. | Number of employees |
| Employees | 293 | at 2022-03-31d | Cons. | Number of employees |
| Employees | 286 | at 2021-03-31d | Cons. | Number of employees |
| Revenue | ¥23.5bn | 2024-04-01 → 2025-03-31 | Standalone | Net sales |
| Revenue | ¥23.6bn | 2023-04-01 → 2024-03-31 | Standalone | Net sales |
| Revenue | ¥20.9bn | 2022-04-01 → 2023-03-31d | Standalone | Net sales (5-year summary) |
| Revenue | ¥24.3bn | 2021-04-01 → 2022-03-31d | Standalone | Net sales (5-year summary) |
| Revenue | ¥26.2bn | 2020-04-01 → 2021-03-31d | Standalone | Net sales (5-year summary) |
| Operating income | ¥1.1bn | 2024-04-01 → 2025-03-31 | Standalone | Operating income |
| Operating income | ¥1.4bn | 2023-04-01 → 2024-03-31 | Standalone | Operating income |
| Ordinary income | ¥1.2bn | 2024-04-01 → 2025-03-31 | Standalone | Ordinary income |
| Ordinary income | ¥1.6bn | 2023-04-01 → 2024-03-31 | Standalone | Ordinary income |
| Ordinary income | ¥1.1bn | 2022-04-01 → 2023-03-31d | Standalone | Ordinary income loss (5-year summary) |
| Ordinary income | ¥2.3bn | 2021-04-01 → 2022-03-31d | Standalone | Ordinary income loss (5-year summary) |
| Ordinary income | ¥3.1bn | 2020-04-01 → 2021-03-31d | Standalone | Ordinary income loss (5-year summary) |
| Profit before tax | ¥1.2bn | 2024-04-01 → 2025-03-31 | Standalone | Income before income taxes |
| Profit before tax | ¥1.6bn | 2023-04-01 → 2024-03-31 | Standalone | Income before income taxes |
| Net income | ¥843m | 2024-04-01 → 2025-03-31 | Standalone | Profit loss |
| Net income | ¥1.1bn | 2023-04-01 → 2024-03-31 | Standalone | Profit loss |
| Net income | ¥876m | 2022-04-01 → 2023-03-31d | Standalone | Net income loss (5-year summary) |
| Net income | ¥1.7bn | 2021-04-01 → 2022-03-31d | Standalone | Net income loss (5-year summary) |
| Net income | ¥2.1bn | 2020-04-01 → 2021-03-31d | Standalone | Net income loss (5-year summary) |
| Total assets | ¥25.4bn | at 2025-03-31 | Standalone | Assets |
| Total assets | ¥26.8bn | at 2024-03-31 | Standalone | Assets |
| Total assets | ¥23.6bn | at 2023-03-31d | Standalone | Total assets (5-year summary) |
| Total assets | ¥23.8bn | at 2022-03-31d | Standalone | Total assets (5-year summary) |
| Total assets | ¥24.9bn | at 2021-03-31d | Standalone | Total assets (5-year summary) |
| Total liabilities | ¥6.1bn | at 2025-03-31 | Standalone | Liabilities |
| Total liabilities | ¥7.9bn | at 2024-03-31 | Standalone | Liabilities |
| Net assets / equity | ¥19.3bn | at 2025-03-31 | Standalone | Net assets |
| Net assets / equity | ¥18.9bn | at 2024-03-31 | Standalone | Net assets |
| Net assets / equity | ¥18.1bn | at 2023-03-31d | Standalone | Net assets |
| Net assets / equity | ¥17.8bn | at 2022-03-31d | Standalone | Net assets (5-year summary) |
| Net assets / equity | ¥17.0bn | at 2021-03-31d | Standalone | Net assets (5-year summary) |
| Cash and deposits | ¥3.1bn | at 2025-03-31 | Standalone | Cash and deposits |
| Cash and deposits | ¥3.8bn | at 2024-03-31 | Standalone | Cash and deposits |
| EPS (basic) | ¥114.6 | 2024-04-01 → 2025-03-31 | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥147.08 | 2023-04-01 → 2024-03-31 | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥118.98 | 2022-04-01 → 2023-03-31d | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥224.42 | 2021-04-01 → 2022-03-31d | Standalone | Basic earnings loss per share (5-year summary) |
| EPS (basic) | ¥289.28 | 2020-04-01 → 2021-03-31d | Standalone | Basic earnings loss per share (5-year summary) |
| Dividend per share | ¥65 | 2024-04-01 → 2025-03-31 | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥60 | 2023-04-01 → 2024-03-31 | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥50 | 2022-04-01 → 2023-03-31d | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥70 | 2021-04-01 → 2022-03-31d | Standalone | Dividend paid per share (5-year summary) |
| Dividend per share | ¥80 | 2020-04-01 → 2021-03-31d | Standalone | Dividend paid per share (5-year summary) |
| Net assets per share | ¥2,628.61 | at 2025-03-31 | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥2,569.63 | at 2024-03-31 | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥2,454.37 | at 2023-03-31d | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥2,422.32 | at 2022-03-31d | Standalone | Net assets per share (5-year summary) |
| Net assets per share | ¥2,306.57 | at 2021-03-31d | Standalone | Net assets per share (5-year summary) |
| Equity ratio | 76.0% | at 2025-03-31 | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 70.5% | at 2024-03-31 | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 76.6% | at 2023-03-31d | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 74.9% | at 2022-03-31d | Standalone | Equity to asset ratio (5-year summary) |
| Equity ratio | 68.2% | at 2021-03-31d | Standalone | Equity to asset ratio (5-year summary) |
| ROE | 4.4% | 2024-04-01 → 2025-03-31 | Standalone | Rate of return on equity (5-year summary) |
| ROE | 5.9% | 2023-04-01 → 2024-03-31 | Standalone | Rate of return on equity (5-year summary) |
| ROE | 4.9% | 2022-04-01 → 2023-03-31d | Standalone | Rate of return on equity (5-year summary) |
| ROE | 9.5% | 2021-04-01 → 2022-03-31d | Standalone | Rate of return on equity (5-year summary) |
| ROE | 13.3% | 2020-04-01 → 2021-03-31d | Standalone | Rate of return on equity (5-year summary) |
| Shares issued | 7,378,050 | at 2025-03-31 | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 7,378,050 | at 2024-03-31 | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 7,378,050 | at 2023-03-31d | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 7,378,050 | at 2022-03-31d | Standalone | Total number of issued shares (5-year summary) |
| Shares issued | 7,378,050 | at 2021-03-31d | Standalone | Total number of issued shares (5-year summary) |
| Employees | 307 | at 2025-03-31 | Standalone | Number of employees |
| Employees | 293 | at 2024-03-31 | Standalone | Number of employees |
| Employees | 288 | at 2023-03-31d | Standalone | Number of employees |
| Employees | 271 | at 2022-03-31d | Standalone | Number of employees |
| Employees | 263 | at 2021-03-31d | 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 · 51
| Segment | Item | Period | Value |
|---|---|---|---|
| Reconciling Itemsreconciling | revenue | 2024-04-01 → 2025-03-31 | −¥1.1bn |
| Reconciling Itemsreconciling | revenue intersegment | 2024-04-01 → 2025-03-31 | −¥1.1bn |
| Construction Material Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥57m |
| Construction Material Divisionreportable segment | employees | at 2025-03-31 | 105 pure |
| Construction Material Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥8.2bn |
| Construction Material Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥8.2bn |
| Construction Material Divisionreportable segment | revenue intersegment | 2024-04-01 → 2025-03-31 | ¥1m |
| Construction Material Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥705m |
| Construction Works Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥111m |
| Construction Works Divisionreportable segment | employees | at 2025-03-31 | 103 pure |
| Construction Works Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥11.3bn |
| Construction Works Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥10.3bn |
| Construction Works Divisionreportable segment | revenue intersegment | 2024-04-01 → 2025-03-31 | ¥1.1bn |
| Construction Works Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥359m |
| Tunneling Works Divisionreportable segment | depreciation | 2024-04-01 → 2025-03-31 | ¥94m |
| Tunneling Works Divisionreportable segment | employees | at 2025-03-31 | 40 pure |
| Tunneling Works Divisionreportable segment | revenue | 2024-04-01 → 2025-03-31 | ¥7.6bn |
| Tunneling Works Divisionreportable segment | revenue external | 2024-04-01 → 2025-03-31 | ¥7.6bn |
| Tunneling Works Divisionreportable segment | revenue intersegment | 2024-04-01 → 2025-03-31 | ¥48,000 |
| Tunneling Works Divisionreportable segment | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥396m |
| —segment total | depreciation | 2024-04-01 → 2025-03-31 | ¥262m |
| —segment total | employees | at 2025-03-31 | 248 pure |
| —segment total | revenue | 2024-04-01 → 2025-03-31 | ¥27.1bn |
| —segment total | revenue external | 2024-04-01 → 2025-03-31 | ¥26.1bn |
| —segment total | revenue intersegment | 2024-04-01 → 2025-03-31 | ¥1.1bn |
| —segment total | segment ordinary income | 2024-04-01 → 2025-03-31 | ¥1.5bn |
| Reconciling Itemsreconciling | revenue | 2023-04-01 → 2024-03-31 | −¥988m |
| Reconciling Itemsreconciling | revenue intersegment | 2023-04-01 → 2024-03-31 | −¥988m |
| Construction Material Divisionreportable segment | depreciation | 2023-04-01 → 2024-03-31 | ¥53m |
| Construction Material Divisionreportable segment | revenue | 2023-04-01 → 2024-03-31 | ¥7.7bn |
| Construction Material Divisionreportable segment | revenue external | 2023-04-01 → 2024-03-31 | ¥7.7bn |
| Construction Material Divisionreportable segment | revenue intersegment | 2023-04-01 → 2024-03-31 | ¥2m |
| Construction Material Divisionreportable segment | segment ordinary income | 2023-04-01 → 2024-03-31 | ¥722m |
| Construction Works Divisionreportable segment | depreciation | 2023-04-01 → 2024-03-31 | ¥78m |
| Construction Works Divisionreportable segment | revenue | 2023-04-01 → 2024-03-31 | ¥10.1bn |
| Construction Works Divisionreportable segment | revenue external | 2023-04-01 → 2024-03-31 | ¥9.1bn |
| Construction Works Divisionreportable segment | revenue intersegment | 2023-04-01 → 2024-03-31 | ¥986m |
| Construction Works Divisionreportable segment | segment ordinary income | 2023-04-01 → 2024-03-31 | ¥509m |
| Tunneling Works Divisionreportable segment | depreciation | 2023-04-01 → 2024-03-31 | ¥113m |
| Tunneling Works Divisionreportable segment | revenue | 2023-04-01 → 2024-03-31 | ¥8.2bn |
| Tunneling Works Divisionreportable segment | revenue external | 2023-04-01 → 2024-03-31 | ¥8.2bn |
| Tunneling Works Divisionreportable segment | segment ordinary income | 2023-04-01 → 2024-03-31 | ¥490m |
| —segment total | depreciation | 2023-04-01 → 2024-03-31 | ¥245m |
| —segment total | revenue | 2023-04-01 → 2024-03-31 | ¥26.1bn |
| —segment total | revenue external | 2023-04-01 → 2024-03-31 | ¥25.1bn |
| —segment total | revenue intersegment | 2023-04-01 → 2024-03-31 | ¥988m |
| —segment total | segment ordinary income | 2023-04-01 → 2024-03-31 | ¥1.7bn |
| Construction Material Divisionreportable segment | employees | at 2025-03-31 | 105 pure |
| Construction Works Divisionreportable segment | employees | at 2025-03-31 | 83 pure |
| Tunneling Works Divisionreportable segment | employees | at 2025-03-31 | 40 pure |
| —segment total | employees | at 2025-03-31 | 228 pure |
Segment names come from EDINET member IDs; not yet mapped to a common taxonomy.
All source rows · 1,637
| Item | Context | Value | Unit |
|---|---|---|---|
| Transactions with other segments | CurrentYearDuration_ReconcilingItemsMember | -1056410000 | JPY |
| Transactions with other segments | CurrentYearDuration | － | JPY |
| Net sales | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionMaterialDivisionReportableSegmentsMember | 8173316000 | JPY |
| Net sales | CurrentYearDuration_jpcrp030000-asr_E02876-000TunnelingWorksDivisionReportableSegmentsMember | 7646977000 | JPY |
| Net sales | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionWorksDivisionReportableSegmentsMember | 11309155000 | JPY |
| Net sales | CurrentYearDuration_ReportableSegmentsMember | 27129448000 | JPY |
| Net sales | CurrentYearDuration_ReconcilingItemsMember | -1056410000 | JPY |
| Net sales | CurrentYearDuration | 26073037000 | JPY |
| Ordinary income | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionMaterialDivisionReportableSegmentsMember | 705131000 | JPY |
| Ordinary income | CurrentYearDuration_jpcrp030000-asr_E02876-000TunnelingWorksDivisionReportableSegmentsMember | 395608000 | JPY |
| Ordinary income | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionWorksDivisionReportableSegmentsMember | 359049000 | JPY |
| Ordinary income | CurrentYearDuration_ReportableSegmentsMember | 1459789000 | JPY |
| Ordinary income | CurrentYearDuration_ReconcilingItemsMember | － | JPY |
| Ordinary income | CurrentYearDuration | 1459789000 | JPY |
| Depreciation segment information | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionMaterialDivisionReportableSegmentsMember | 57432000 | JPY |
| Depreciation segment information | CurrentYearDuration_jpcrp030000-asr_E02876-000TunnelingWorksDivisionReportableSegmentsMember | 93857000 | JPY |
| Depreciation segment information | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionWorksDivisionReportableSegmentsMember | 111120000 | JPY |
| Depreciation segment information | CurrentYearDuration_ReportableSegmentsMember | 262410000 | JPY |
| Depreciation segment information | CurrentYearDuration_ReconcilingItemsMember | － | JPY |
| Depreciation segment information | CurrentYearDuration | 262410000 | JPY |
| Interest income noi | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionMaterialDivisionReportableSegmentsMember | 1105000 | JPY |
| Interest income noi | CurrentYearDuration_jpcrp030000-asr_E02876-000TunnelingWorksDivisionReportableSegmentsMember | 1033000 | JPY |
| Interest income noi | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionWorksDivisionReportableSegmentsMember | 2641000 | JPY |
| Interest income noi | CurrentYearDuration_ReportableSegmentsMember | 4780000 | JPY |
| Interest income noi | CurrentYearDuration_ReconcilingItemsMember | － | JPY |
| Interest income noi | CurrentYearDuration | 4780000 | JPY |
| Interest expenses noe | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionMaterialDivisionReportableSegmentsMember | 4481000 | JPY |
| Interest expenses noe | CurrentYearDuration_jpcrp030000-asr_E02876-000TunnelingWorksDivisionReportableSegmentsMember | 4192000 | JPY |
| Interest expenses noe | CurrentYearDuration_jpcrp030000-asr_E02876-000ConstructionWorksDivisionReportableSegmentsMember | 6200000 | JPY |
| Interest expenses noe | CurrentYearDuration_ReportableSegmentsMember | 14873000 | JPY |
| Interest expenses noe | CurrentYearDuration_ReconcilingItemsMember | － | JPY |
| Interest expenses noe | CurrentYearDuration | 14873000 | JPY |
| Cash and deposits | Prior1YearInstant_NonConsolidatedMember | 3849525000 | JPY |
| Cash and deposits | CurrentYearInstant_NonConsolidatedMember | 3082087000 | JPY |
| Notes receivable trade | Prior1YearInstant_NonConsolidatedMember | 620170000 | JPY |
| Notes receivable trade | CurrentYearInstant_NonConsolidatedMember | 368473000 | JPY |
| Electronically recorded monetary claims operating ca | Prior1YearInstant_NonConsolidatedMember | 2232895000 | JPY |
| Electronically recorded monetary claims operating ca | CurrentYearInstant_NonConsolidatedMember | 1552015000 | JPY |
| Accounts receivable trade | Prior1YearInstant_NonConsolidatedMember | 1906641000 | JPY |
| Accounts receivable trade | CurrentYearInstant_NonConsolidatedMember | 1581012000 | JPY |
| Accounts receivable from completed construction contracts cns | Prior1YearInstant_NonConsolidatedMember | 4549772000 | JPY |
| Accounts receivable from completed construction contracts cns | CurrentYearInstant_NonConsolidatedMember | 5161742000 | JPY |
| Short term investment securities | Prior1YearInstant_NonConsolidatedMember | 300000000 | JPY |
| Short term investment securities | CurrentYearInstant_NonConsolidatedMember | 400251000 | JPY |
| Costs on uncompleted construction contracts cns | Prior1YearInstant_NonConsolidatedMember | 365137000 | JPY |
| Costs on uncompleted construction contracts cns | CurrentYearInstant_NonConsolidatedMember | 320740000 | JPY |
| Merchandise | Prior1YearInstant_NonConsolidatedMember | 2463772000 | JPY |
| Merchandise | CurrentYearInstant_NonConsolidatedMember | 2694391000 | JPY |
| Supplies | Prior1YearInstant_NonConsolidatedMember | 7561000 | JPY |
| Supplies | CurrentYearInstant_NonConsolidatedMember | 6482000 | 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 rounding |
| balance sheet identity | pass rounding |
| balance sheet identity | pass rounding |
| 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 |