| Net income (loss) allocated to each outstanding limited partnership and general partnership unit. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Net Income (Loss), Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |