FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2019

FAIR VALUE MEASUREMENTS

Schedule of implied fair value of the Company's First Lien Term Loan (as defined below)

	December 31, 2018				March 31, 2019
	Stated Value		Fair Value		Stated Value		Fair Value
First Lien Term Loan	$	798,985	$	773,018	$	796,978	$	792,993

Schedule of changes in the fair value of estimated contingent consideration for business acquisitions

Balance at January 1, 2018	$	76,677
Additions to estimated contingent consideration		42,086
Payments of contingent consideration		(26,237)
Non-cash changes in fair value of estimated contingent consideration		6,638
Other		(259)
Balance at December 31, 2018		98,905
Additions to estimated contingent consideration		29,583
Payments of contingent consideration		(16,819)
Non-cash changes in fair value of estimated contingent consideration		7,414
Other		(41)
Balance at March 31, 2019	$	119,042

Schedule of inputs used in the fair value measurement of estimated contingent consideration

Fair Value at		Quantitative Information About Level 3 Fair Value Measurements
December 31, 2018		Valuation Technique	Unobservable Input	Range
$	98,905	Monte Carlo Simulation model	Forecasted growth rates	(16.2)% - 18.7	%

Fair Value at		Quantitative Information About Level 3 Fair Value Measurements
March 31, 2019		Valuation Technique	Unobservable Input	Range
$	119,042	Monte Carlo Simulation model	Forecasted growth rates	(21.7)% - 147.0	%