Convertible Notes (Tables)

3 Months Ended

Mar. 31, 2013

Convertible Notes [Abstract]

Schedule of convertible and non-recourse notes activity

		Principal Balance Outstanding		Carrying Value
Description	Maturity Date	March 31, 2013		March 31, 2013		December 31, 2012
(In thousands)
Convertible Notes
Series 2012 Notes	February 15, 2015	$	179,000	$	167,015	$	165,528
May 2015 Notes	May 1, 2015	$	155,250	144,606		143,433
February 2015 Notes	February 15, 2015	$	1,000	992		991
Total				$	312,613	$	309,952

Schedule of carrying value and unamortized discount on Series 2012 Notes

(In thousands)	March 31, 2013			December 31, 2012
Principal amount of the Series 2012 Notes	$	179,000		$	179,000
Unamortized discount of liability component	(11,985		)	(13,472		)
Total	$	167,015		$	165,528

Schedule of interest expense on Series 2012 Notes

	Three Months Ended March 31,
(In thousands)	2013		2012
Contractual coupon interest	$	1,287	$	1,263
Amortization of debt issuance costs	284		271
Amortization of debt discount	1,487		1,365
Total	$	3,058	$	2,899

Schedule of carrying value and unamortized discount on May 2015 Notes

(In thousands)	March 31, 2013			December 31, 2012
Principal amount of the May 2015 Notes	$	155,250		$	155,250
Unamortized discount of liability component	(10,644		)	(11,817		)
Total	$	144,606		$	143,433

Schedule of interest expense for May 2015 Notes

	Three Months Ended March 31,
(In thousands)	2013		2012
Contractual coupon interest	$	1,455	$	1,455
Amortization of debt issuance costs	304		295
Amortization of debt discount	1,173		1,090
Total	$	2,932	$	2,840