Convertible Notes (Tables)

6 Months Ended

Jun. 30, 2013

Debt Disclosure [Abstract]

Schedule of convertible and non-recourse notes activity

		Principal Balance Outstanding		Carrying Value
Description	Maturity Date	June 30, 2013		June 30, 2013		December 31, 2012
(In thousands)
Convertible Notes
Series 2012 Notes	February 15, 2015	$	179,000	$	168,528	$	165,528
May 2015 Notes	May 1, 2015	$	155,250	145,799		143,433
February 2015 Notes	February 15, 2015	$	1,000	993		991
Total				$	315,320	$	309,952

Schedule of carrying value and unamortized discount on Series 2012 Notes

(In thousands)	June 30, 2013			December 31, 2012
Principal amount of the Series 2012 Notes	$	179,000		$	179,000
Unamortized discount of liability component	(10,472		)	(13,472		)
Total	$	168,528		$	165,528

Schedule of interest expense on Series 2012 Notes

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2013		2012		2013		2012
Contractual coupon interest	$	1,287	$	1,287	$	2,573	$	2,550
Amortization of debt issuance costs	287		277		571		548
Amortization of debt discount	1,513		1,415		3,000		2,780
Total	$	3,087	$	2,979	$	6,144	$	5,878

Schedule of carrying value and unamortized discount on May 2015 Notes

(In thousands)	June 30, 2013			December 31, 2012
Principal amount of the May 2015 Notes	$	155,250		$	155,250
Unamortized discount of liability component	(9,451		)	(11,817		)
Total	$	145,799		$	143,433

Schedule of interest expense for May 2015 Notes

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2013		2012		2013		2012
Contractual coupon interest	$	1,455	$	1,455	$	2,911	$	2,911
Amortization of debt issuance costs	307		297		611		592
Amortization of debt discount	1,194		1,110		2,366		2,200
Total	$	2,956	$	2,862	$	5,888	$	5,703