| 継続企業の前提に関する事項 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 継続企業の前提に関する事項、中間財務諸表 [目次項目] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Notes - Uncertainties of entity's ability to continue as going concern | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Notes - Uncertainties of entity's ability to continue as going concern, Semi-annual financial statements [heading] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |