Convertible Notes (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Schedule of convertible and non-recourse notes activity

		Principal Balance Outstanding		Carrying Value
		September 30,		September 30,		December 31,
Description	Maturity Date	2015		2015		2014
(In thousands)
Convertible Notes
Series 2012 Notes	February 15, 2015	$	—	$	—	$	22,261
May 2015 Notes	May 1, 2015	$	—	—		153,235
February 2018 Notes	February 1, 2018	$	300,000	281,581		276,228
March 2015 Term Loan	February 15, 2016	$	50,000	49,842		—
Total				$	331,423	$	451,724

Schedule of carrying value and unamortized discount on Series 2012 Notes

The principal amount, carrying value and unamortized discount of our Series 2012 Notes were as follows:

(In thousands)	September 30, 2015		December 31, 2014
Principal amount of the Series 2012 Notes	$	—	$	22,337
Unamortized discount of liability component	—		(76		)
Total	$	—	$	22,261

Schedule of interest expense on Series 2012 Notes

Interest expense for our Series 2012 Notes on our Condensed Consolidated Statements of Income was as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2015		2014		2015		2014
Contractual coupon interest	$	—	$	347	$	80	$	1,455
Amortization of debt issuance costs	—		64		13		996
Amortization of debt discount	—		404		76		1,783
Total	$	—	$	815	$	169	$	4,234

Schedule of carrying value and unamortized discount on May 2015 Notes

The carrying value and unamortized discount of our May 2015 Notes were as follows:

(In thousands)	September 30, 2015		December 31, 2014
Principal amount of the May 2015 Notes	$	—	$	155,050
Unamortized discount of liability component	—		(1,815		)
Total	$	—	$	153,235

Schedule of interest expense for May 2015 Notes

Interest expense for our May 2015 Notes on our Condensed Consolidated Statements of Income was as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2015		2014		2015		2014
Contractual coupon interest	$	—	$	1,455	$	1,938	$	4,366
Amortization of debt issuance costs	—		320		435		952
Amortization of debt discount	—		1,308		1,815		3,852
Total	$	—	$	3,083	$	4,188	$	9,170

Schedule of carrying value and unamortized discount on February 2018 Notes [Table Text Block]

The carrying value and unamortized discount of our February 2018 Notes were as follows:

(In thousands)	September 30, 2015			December 31, 2014
Principal amount of the February 2018 Notes	$	300,000		$	300,000
Unamortized discount of liability component	(18,419		)	(23,772		)
Total	$	281,581		$	276,228

Schedule of interest expense for February 2018 Notes [Table Text Block]

Interest expense for our February 2018 Notes on our Condensed Consolidated Statements of Income was as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2015		2014		2015		2014
Contractual coupon interest	$	3,000	$	3,000	$	9,000	$	7,633
Amortization of debt issuance costs	510		536		1,599		1,358
Amortization of debt discount	1,830		1,688		5,353		4,238
Total	$	5,340	$	5,224	$	15,952	$	13,229