FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Actual and Estimated Fair Values of the Financial Instruments

The carrying values and estimated fair values of the term loans, net of discount, Notes (net of the equity component classified in stockholders' equity and discount) and the interest rate swap liabilities were as follows:

	June 30, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Tranche B-1 Term Loan	$	149,516	$	143,535	$	1,130,320	$	930,592
Tranche B-2 Term Loan	655,493		634,189		—		—
FILO Term Loan	262,721		271,916		—		—
Notes	171,701		126,887		167,988		85,044
Interest rate swaps	1,683		1,683		—		—