Quarterly report pursuant to Section 13 or 15(d)

Redeemable Noncontrolling Interests (Details)

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Redeemable Noncontrolling Interests (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Redeemable Noncontrolling Interest [Roll Forward]    
Beginning balance $ 10,298 $ 8,908
Distribution to noncontrolling interest (643) 0
Net income (loss) attributable to noncontrolling interest 285 (1,157)
Adjustment to arrive at fair value of interest 5,631 1,827
Ending balance $ 15,571 $ 9,578