Convertible Notes and Non-recourse Notes (Tables)

12 Months Ended

Dec. 31, 2012

Convertible and Non-Recourse Notes [Abstract]

Schedule of convertible and non-recourse notes activity

(In thousands)	2012 Notes			Series 2012 Notes			May 2015 Notes		February 2015 Notes			Non-recourse Notes			Total
Balance at December 31, 2010	$	133,464		$	—		$	—	$	176,964		$	204,270		$	514,698
Issuance	—			—			136,313		—			—			136,313
Payment	—			—			—		—			(110,900		)	(110,900		)
Repurchase	(133,464		)	—			—		—			—			(133,464		)
Discount amortization	—			—			2,639		699			—			3,338
Balance at December 31, 2011	—			—			138,952		177,663			93,370			409,985
Issuance and exchange	—			176,679			—		(176,679		)	—			—
Payment	—			—			—		—			(93,370		)	(93,370		)
Non-cash discount	—			(16,833		)	—		—			—			(16,833		)
Discount amortization	—			5,682			4,481		7			—			10,170
Balance at December 31, 2012	$	—		$	165,528		$	143,433	$	991		$	—		$	309,952

Schedule of carrying value and unamortized discount on Series 2012 Notes

	December 31,
(In thousands)	2012			2011
Principal amount of the Series 2012 Notes	$	179,000		$	—
Unamortized discount of liability component	(13,472		)	—
Net carrying value of the Series 2012 Notes	$	165,528		$	—

Schedule of interest expense on Series 2012 Notes

	Year ended December 31,
(In thousands)	2012		2011		2010
Contractual coupon interest	$	5,122	$	—	$	—
Amortization of debt issuance costs	1,107		—		—
Amortization of debt discount	5,682		—		—
Total	$	11,911	$	—	$	—

Schedule of carrying value and unamortized discount on May 2015 Notes

	December 31,
(In thousands)	2012			2011
Principal amount of the May 2015 Notes	$	155,250		$	155,250
Unamortized discount of liability component	(11,817		)	(16,298		)
Net carrying value of the May 2015 Notes	$	143,433		$	138,952

Schedule of interest expense for May 2015 Notes

	Year Ended December 31,
(In thousands)	2012		2011		2010
Contractual coupon interest	$	5,822	$	3,639	$	—
Amortization of debt issuance costs	1,193		727		—
Amortization of debt discount	4,481		2,639		—
Total	$	11,496	$	7,005	$	—

Schedule of future minimum principal payments

(In thousands)	Series 2012 Notes		May 2015 Notes		February 2015 Notes		Total
2013	$	—	$	—	$	—	$	—
2014	—		—		—		—
2015	179,000		155,250		1,000		335,250
Total	$	179,000	$	155,250	$	1,000	$	335,250