Convertible Senior Notes (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Convertible Debt

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

	June 30, 2014
Liability component
Principal	$	1,437,500
Less: note discount	(160,211		)
Net carrying amount	1,277,289
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 and Six Months Ended
	June 30, 2014
Contractual interest expense	$	1,198
Amortization of debt issuance costs	611
Amortization of debt discount	5,169
	$	6,978