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GOODWILL (Details) (USD $)
 2 Months Ended 1 Months Ended
Mar. 31, 2015
Jan. 31, 2015
Dec. 31, 2014
Changes in the carrying amount of goodwill      
Goodwill. $ 735,712,000us-gaap_Goodwill    
Decrease in goodwill balance 0us-gaap_GoodwillSubsequentRecognitionOfDeferredTaxAsset    
Predecessor      
Changes in the carrying amount of goodwill      
Goodwill.     102,365,000us-gaap_Goodwill
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember
Decrease in goodwill balance   $ 300,000us-gaap_GoodwillSubsequentRecognitionOfDeferredTaxAsset
/ us-gaap_StatementScenarioAxis
= us-gaap_PredecessorMember