GOODWILL (Details) (USD $)
In Thousands, unless otherwise specified
2 Months Ended 12 Months Ended
Dec. 31, 2012
item
Dec. 31, 2013
item
Dec. 31, 2012
Dec. 31, 2011
Changes in carrying amount of goodwill        
Balance at the beginning of the period   $ 102,659 $ 37,348  
Goodwill acquired in business acquisitions     64,785  
Foreign currency translation adjustments   (437) 526  
Balance at the end of the period 102,659 102,222 102,659 37,348
Number of reporting units 2 1    
Impairment charges related to goodwill   $ 0 $ 0 $ 0