FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of changes in assets and liabilities that are measured at fair value on a recurring basis using significant unobservable inputs

The changes in the fair value of the Company's Level 3 liabilities during the three and six months ended June 30, 2018 and 2017 are as follows (in thousands):

	Three Months Ended   June 30,					Six Months Ended   June 30,
	2018			2017		2018			2017
Contingent consideration, beginning of period	$	33,108		$	31,846	$	57,349		$	23,100
Transfers into Level 3
Transfers out of Level 3
Total net (gains) losses included in earnings (realized and unrealized)	(167		)	9,393		(908		)	18,139
Purchases, sales and settlements:
Additions	5,800			4,988		5,800			4,988
Payments	(23,500		)			(47,000		)
Contingent consideration, end of period	$	15,241		$	46,227	$	15,241		$	46,227