Quarterly report pursuant to Section 13 or 15(d)

Redeemable Noncontrolling Interests (Details)

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Redeemable Noncontrolling Interests (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Redeemable Noncontrolling Interest [Roll Forward]    
Beginning balance $ 18,417 $ 17,758
Distribution to noncontrolling interest (885) (590)
Net income attributable to noncontrolling interest 1,143 1,016
Adjustment to arrive at fair value of interest 739 717
Ending balance $ 19,414 $ 18,901