FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

Dec. 31, 2015

Financial Instruments, Owned, at Fair Value [Abstract]

Schedule of Carrying Amount and Estimated Fair Values of the Financial Instruments

The carrying value and estimated fair value of the Notes (excluding the equity component classified in stockholders' equity) and Term Loan Facility were as follows:

	December 31, 2015				December 31, 2014
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
	(in thousands)
Term Loan Facility	$	1,174,369	$	1,145,010	$	1,342,378	$	1,288,683
Convertible senior notes	235,085		188,940		—		—