Basis Of Reporting (Details)	9 Months Ended
Sep. 30, 2012
Basis Of Reporting [Abstract]
Minimum ownership interest , requiring equity method accounting	20.00%
Maximum ownership interest, requiring equity method accounting	50.00%
Non-controlling interest, ownership percentage	50.00%

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant