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CONSOLIDATED STATEMENTS OF OPERATIONS (Parentheticals)	Dec. 31, 2011	Dec. 31, 2010
Ownership percentage in non-controlling interest	48.20%	49.40%

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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