Government Grants (Details) In Millions, unless otherwise specified	Dec. 31, 2011 USD ($)	Dec. 31, 2011 CNY
Government Grants [Abstract]
One-time incentive award	$ 2.20	13.96

Developers, builders, governmental agencies and municipalities will provide the entity with cash, or in some cases property, to extend its services to their properties. Nonrefundable contributions are recorded as contributions in aid of construction ("CIAC").

No definition available.

Name:	us-gaap_ContributionsInAidOfConstruction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant