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FAIR VALUE MEASUREMENTS - Additional Information (Detail) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Derivative asset $ 790,000 $ 816,000
Contingent consideration liabilities 24,877,000 24,119,000
Debt obligations, carrying amount 2,871,875,000 2,959,316,000
Maximum    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Maximum contingent liability if financial performance measures were fully met 25,700,000  
Level 3 Inputs [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Derivative asset 0 0
Contingent consideration liabilities 24,877,000 24,119,000
Level 3 Inputs [Member] | Current Liabilities [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Contingent consideration liabilities 8,700,000 8,100,000
Level 2 Inputs [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Derivative asset 790,000 816,000
Contingent consideration liabilities 0 0
Debt obligations, fair value $ 2,880,000,000 $ 2,970,000,000