Convertible Senior Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Convertible Senior Debt

The following table summarizes the Company’s convertible senior debt:

	September 30, 2014		December 31, 2013
	(in thousands)
5.000% Notes due 2016	$	50,000	$	50,000
4.250% Notes due 2018	350,000		350,000
3.625% Notes due 2020	300,000		300,000
Total	$	700,000	$	700,000