Debt (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Summary of Debt and Capital Lease Obligations

The Company’s debt and capital lease obligations at December 31 consisted of (amounts in thousands):

	2013			2012
$1 Billion Credit Facility	$	509,500		$	—
$925 Million Credit Facility		—			545,000
3.75% Convertible Senior Notes, net of unamortized discount of $10,096 and $26,961		293,962			333,039
5% Senior Notes		350,000			—
6.75% Senior Notes		—			152,180
Capital lease obligations		958			1,644
Total debt		1,154,420			1,031,863
Less amounts due within one year		(599	)		(130,358	)
Total long-term debt	$	1,153,821		$	901,505

Annual Maturities of Long-Term Debt Excluding Capital Lease Obligations

Annual maturities of long-term debt, excluding capital lease obligations, are as follows (amounts in thousands):

	$1 Billion Credit Facility		3.75% Convertible Senior Notes		5% Senior Notes		Total
2014(1)	$	—	$	304,058	$	—	$	304,058
2015		—		—		—		—
2016		—		—		—		—
2017		509,500		—		—		509,500
2018		—		—		—		—
Years thereafter		—		—		350,000		350,000
Total	$	509,500	$	304,058	$	350,000	$	1,163,558

(1) As the Company has the intent and ability to refinance all of its convertible notes on a long-term basis when due, these notes have been classified as long-term debt.