Convertible Senior Notes (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of Convertible Senior Notes

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

	September 30, 2014
Liability component:
Principal	$	690,000
Less: debt discount, net of amortization	(89,902		)
Net carrying amount	$	600,098
Equity component:	$	101,276

Schedule of Interest Expense

The following table sets forth total interest expense included in the statement of operations related to the Notes (in thousands):

	For the Three Months Ended September 30,			For the Nine Months Ended September 30,
	2014			2014
Amortization of debt discount	$	449		$	1,079
Amortization of debt issuance costs	4,712			11,373
Capitalization of interest expense	(679		)	(1,513		)
Total interest expense	$	4,482		$	10,939