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GOODWILL (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2014
Goodwill [Roll Forward]  
Beginning balance $ 143,955
Goodwill acquired during the period 15,266
Goodwill allocated to specific assets for business acquired in first six months of 2013 (1,680)
Goodwill allocated to specific assets for business acquired - December 13 Acquisition (7,500)
Goodwill adjustments for purchase price allocation of businesses acquired 430
Ending balance $ 150,471