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Noncontrolling Interests Noncontrolling Interests - Text Details (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Noncontrolling Interest [Abstract]      
Net income attributable to noncontrolling interests $ 1,229us-gaap_NetIncomeLossAttributableToNoncontrollingInterest $ 1,236us-gaap_NetIncomeLossAttributableToNoncontrollingInterest  
Redeemable Noncontrolling Interest, Equity, Carrying Amount 19,911us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount   20,905us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount
Nonredeemable Noncontrolling Interest $ 2,601us-gaap_NonredeemableNoncontrollingInterest   $ 386us-gaap_NonredeemableNoncontrollingInterest