FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2017

Fair Value Measurements

Fair value measurement information for certain assets and liabilities

	March 31, 2017				December 31, 2016
	Book		Fair		Book		Fair
(in thousands)	Value		Value		Value		Value
Financial Assets (Liabilities):
5.875% Notes due 2022	$	(750,000)	$	(774,270)	$	(750,000)	$	(782,835)
4.375% Notes due 2024	$	(750,000)	$	(781,950)	$	(750,000)	$	(779,453)
Derivative instruments — assets	$	8,819	$	8,819	$	—	$	—
Derivative instruments — liabilities	$	(10,838)	$	(10,838)	$	(51,940)	$	(51,940)