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ACQUISITIONS AND REVALUATIONS OF NON-CONTROLLING INTERESTS - Changes in Carrying Amount of Redeemable Non-Controlling Interest (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2014
ACQUISITIONS AND REVALUATIONS OF NON-CONTROLLING INTERESTS [Abstract]  
Beginning balance $ 4,104
Increase due to revaluation and operating results of redeemable non-controlling interests 1,869
Purchases of redeemable non-controlling interests (4,887)
Ending balance $ 1,086