Consolidated Equity Stmt Parenthetical (Parentheticals) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	$ 1,224

Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

No definition available.

Name:	us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration