Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following summarizes the Company’s outstanding debt:

	June 30, 2014		December 31, 2013
	(in thousands, except percentages)
Credit facility (1)	$	1,173,175	$	1,173,175
10.25% senior notes due June 2014	—		205,257
6.75% senior notes due November 2020	299,970		300,000
6.375% senior notes due September 2022	599,163		600,000
Net unamortized premiums	15,547		22,729
Total debt, net	2,087,855		2,301,161
Less current maturities	—		(211,558		)
Total long-term debt, net	$	2,087,855	$	2,089,603

⁽¹⁾  Variable interest rates of 2.66% and 2.67% at June 30, 2014, and December 31, 2013, respectively.

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

	June 30, 2014				December 31, 2013
	Carrying Value		Fair Value		Carrying Value		Fair Value
	(in thousands)
Credit facility	$	1,173,175	$	1,173,175	$	1,173,175	$	1,173,175
Senior notes, net	914,680		948,212		1,127,986		1,128,527
Total debt, net	$	2,087,855	$	2,121,387	$	2,301,161	$	2,301,702