Convertible Notes (Tables)

9 Months Ended

Sep. 30, 2011

Convertible Notes [Abstract]

Principal Balance, Unamortized Discount And Net Carrying Amount Of The Liability Components And Equity Components

	Liability Component						Equity Component
September 30, 2011	Principal Balance		Unamortized Discount		Net Carrying Amount		Net Carrying Amount
	(In thousands)
2018 Convertible Notes	$	230,000	$	56,155	$	173,845	$	34,427

Schedule Of Accretion Of Debt Discount

2018 Convertible Notes	(In thousands)
Remainder of 2011	$	1,613
2012	$	6,865
2013	$	7,582
2014	$	8,372
2015	$	9,246
Thereafter	$	22,477