| Art 19 para 2 item 9-4 | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Change of independent auditors | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Change of independent auditors [text block] | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| 第19条第2項第9号の4 | ja | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| 監査公認会計士等の異動 | ja | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| 監査公認会計士等の異動 [テキストブロック] | ja | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |