CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2009	$ 102,367	$ 9	$ 1,327,942	$ 1,025	$ (1,226,609)
Beginning Balance, Shares at Dec. 31, 2009		93,281
Stock option exercises and RSU release	8,340		8,340
Stock option exercises and RSU release, Shares		1,176
Stock-based compensation	17,399		17,399
Shares issued for Employee Stock Purchase Plan	551		551
Shares issued for Employee Stock Purchase Plan, Shares		60
Other comprehensive income/loss	(57)			(57)
Net loss	(37,938)				(37,938)
Ending Balance at Dec. 31, 2010	90,662	9	1,354,232	968	(1,264,547)
Ending Balance, Shares at Dec. 31, 2010		94,517
Sale of common stock	219,783	2	219,781
Sale of common stock, Shares		19,000
Stock option exercises and RSU release	3,916		3,916
Stock option exercises and RSU release, Shares		866
Stock-based compensation	18,885		18,885
Shares issued for Employee Stock Purchase Plan	614		614
Shares issued for Employee Stock Purchase Plan, Shares		102
Other comprehensive income/loss	(2,071)			(2,071)
Net loss	(133,978)				(133,978)
Ending Balance at Dec. 31, 2011	197,811	11	1,597,428	(1,103)	(1,398,525)
Ending Balance, Shares at Dec. 31, 2011		114,485
Shares issued under equity compensation plans	4,117		4,117
Shares issued under equity compensation plans, Shares		774
Stock-based compensation	16,199		16,199
Other comprehensive income/loss	746			746
Net loss	(171,855)				(171,855)
Ending Balance at Dec. 31, 2012	$ 47,018	$ 11	$ 1,617,744	$ (357)	$ (1,570,380)
Ending Balance, Shares at Dec. 31, 2012		115,259