CONSOLIDATED STATEMENT OF CHANGES IN EQUITY (USD $) In Thousands	Total	Accumulated Deficit	Common Stock	Additional Paid-in Capital
Balance at Dec. 31, 2012	$ 313,971	$ (504,072)	$ 2,097	$ 815,946
Balance (in shares) at Dec. 31, 2012			20,968
Net loss	(40,062)	(40,062)
Stock options exercised, net	92		1	91
Stock options exercised, net (in shares)			9
Issuance of restricted stock, net	49			49
Stock-based compensation expense	1,298			1,298
Balance at Jun. 30, 2013	$ 275,348	$ (544,134)	$ 2,098	$ 817,384
Balance (in shares) at Jun. 30, 2013			20,977