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Convertible Notes (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Schedule of convertible notes

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



(In thousands)		As of September 30, 2014				As of December 31, 2013
1.125% Convertible Senior Notes due 2018		$	138,000			$	138,000
5% Convertible Senior Notes due 2014		—				172,500
Total principal amount of convertible notes		$	138,000			$	310,500

Unamortized discount - 2018 Notes		$	(24,308	)		$	(28,371	)
Unamortized discount - 2014 Notes		—				(8,453		)
Total unamortized discount		$	(24,308	)		$	(36,824	)

Total convertible notes		$	113,692			$	273,676
Less current portion		—				164,047
Total long-term convertible notes		$	113,692			$	109,629

Schedule of interest expense on notes

Interest expense related to the notes for the three and nine months ended September 30, 2014 and 2013 was as follows:



	Three Months Ended								Nine Months Ended
	September 30,								September 30,
	2014				2013				2014				2013
	(In thousands)
2014 Notes coupon interest at a rate of 5%	$	—			$	2,156			$	3,929			$	6,469
2014 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 11.7%	—				4,416				8,744				12,650
2018 Notes coupon interest at a rate of 1.125%	403				194				1,179				194
2018 Notes amortization of discount and debt issuance costs at an additional effective interest rate of 5.5%	1,515				719				4,482				719
Total interest expense on convertible notes	$	1,918			$	7,485			$	18,334			$	20,032