| Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Beginning Balance | en-US | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price, Ending Balance | en-US | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |