Condensed, Consolidated Statements of Equity (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Redeemable noncontrolling interests	$ 1,152	$ 702	$ 1,152	$ 702
mandatorily redeemable noncontrolling interest	$ 1,475	$ 1,359	$ 1,475	$ 1,359

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