Convertible Senior Notes (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Convertible Debt

The Convertible Notes consist of the following (in thousands):

	September 30, 2014
Liability component
Principal	$	1,437,500
Less: note discount	(152,408		)
Net carrying amount	1,285,092
Equity component *	$	162,872

* Recorded in the condensed consolidated balance sheet within additional paid-in capital.

Schedule of Interest Expense Recognized Related to Convertible Notes

The following table includes total interest expense recognized related to the Convertible Notes (in thousands):

	Three Months Ended		Nine Months Ended
	September 30, 2014		September 30, 2014
Contractual interest expense	$	1,797	$	2,995
Amortization of debt issuance costs	922		1,533
Amortization of debt discount	7,802		12,971
	$	10,521	$	17,499