Convertible Senior Notes (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Schedule of Convertible Senior Notes

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

	March 31, 2016			December 31, 2015
Liability component:
Principal	$	690,000		$	690,000
Less: debt discount and issuance costs, net of amortization	(66,515		)	(71,953		)
Net carrying amount	$	623,485		$	618,047
Equity component:	$	101,276		$	101,276

Schedule of Interest Expense

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

	For the Three Months Ended March 31,
	2016			2015
Amortization of debt discount and issuance costs	$	5,438		$	5,251
Capitalization of interest expense	(785		)	(675		)
Total interest expense	$	4,653		$	4,576