Convertible Senior Notes (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Convertible Debt

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

	September 30, 2016			December 31, 2015
Liability component
Principal	$	1,437,500		$	1,437,500
Less: note discount and issuance costs	(98,718		)	(126,429		)
Net carrying amount	$	1,338,782		$	1,311,071
Equity component
Temporary equity	$	87,841		$	—
Additional paid-in capital	75,028			162,869
Total equity (including temporary equity)	$	162,869		$	162,869

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,				September 30,
	2016		2015		2016		2015
Contractual interest expense	$	1,797	$	1,797	$	5,391	$	5,391
Amortization of debt issuance costs	1,021		997		3,045		2,971
Amortization of debt discount	8,284		8,039		24,667		23,939
	$	11,102	$	10,833	$	33,103	$	32,301