Convertible Senior Notes (Tables)

12 Months Ended

Dec. 31, 2016

Debt Disclosure [Abstract]

Schedule of Convertible Senior Notes

The Notes consisted of the following components as of December 31, 2016 and 2015 (in thousands):

	December 31, 2016			December 31, 2015
Liability component:
Principal	$	690,000		$	690,000
Less: debt discount and issuance costs, net of amortization	(49,913		)	(71,953		)
Net carrying amount	$	640,087		$	618,047
Equity component:	$	101,276		$	101,276

Schedule of Interest Expense

The following table sets forth total interest expense included in the consolidated statements of income related to the Notes for the years ended December 31, 2016 and 2015 (in thousands):

	2016			2015
Amortization of debt discount and issuance costs	$	22,040		$	21,280
Capitalization of interest expense	(3,402		)	(2,755		)
Total interest expense	$	18,638		$	18,525