Convertible Notes (Tables)

9 Months Ended

Sep. 30, 2013

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	2013		2013		2012
(In thousands)
Convertible Notes
Series 2012 Notes	February 15, 2015	$	180,000	$	171,066	$	165,528
May 2015 Notes	May 1, 2015	$	155,250	147,015		143,433
February 2015 Notes	February 15, 2015	$	—	—		991
Total				$	318,081	$	309,952

Schedule of carrying value and unamortized discount on Series 2012 Notes

(In thousands)	September 30, 2013			December 31, 2012
Principal amount of the Series 2012 Notes	$	180,000		$	179,000
Unamortized discount of liability component	(8,934		)	(13,472		)
Total	$	171,066		$	165,528

Schedule of interest expense on Series 2012 Notes

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2013		2012		2013		2012
Contractual coupon interest	$	1,290	$	1,287	$	3,864	$	3,836
Amortization of debt issuance costs	289		279		860		826
Amortization of debt discount	1,538		1,439		4,538		4,219
Total	$	3,117	$	3,005	$	9,262	$	8,881

Schedule of carrying value and unamortized discount on May 2015 Notes

(In thousands)	September 30, 2013			December 31, 2012
Principal amount of the May 2015 Notes	$	155,250		$	155,250
Unamortized discount of liability component	(8,235		)	(11,817		)
Total	$	147,015		$	143,433

Schedule of interest expense for May 2015 Notes

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In thousands)	2013		2012		2013		2012
Contractual coupon interest	$	1,456	$	1,455	$	4,366	$	4,366
Amortization of debt issuance costs	309		299		920		891
Amortization of debt discount	1,215		1,130		3,582		3,330
Total	$	2,980	$	2,884	$	8,868	$	8,587