Convertible Notes (Tables)

3 Months Ended

Mar. 31, 2017

Debt Disclosure [Abstract]

Schedule of convertible notes

The Company’s convertible notes are shown in the following table:

(In thousands)	As of March 31, 2017			As of December 31, 2016
1.125% Convertible Senior Notes due 2018	$	138,000		$	138,000
Unamortized discount	(9,305		)	(10,913		)
Unamortized debt issuance costs	(779		)	(920		)
Total convertible notes	$	127,916		$	126,167
Less current portion	—			—
Total long-term convertible notes	$	127,916		$	126,167

Schedule of interest expense on notes

Interest expense related to the notes for the three months ended March 31, 2017 and 2016 was as follows:

	Three Months Ended
	March 31,
	2017		2016
	(In thousands)
2018 Notes coupon interest at a rate of 1.125%	$	388	$	388
2018 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 5.5%	1,749		1,651
Total interest expense on convertible notes	$	2,137	$	2,039