Selected Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Selected Financial Data (Unaudited)

Schedule of selected quarterly financial data

	Quarter Ended,
	March 31			June 30			September 30			December 31
2011
Operating expenses	$	9,908		$	16,338		$	8,941		$	11,889
Net loss from continuing operations	$	(9,867	)	$	(16,304	)	$	(8,812	)	$	(12,043	)
Net income from discontinued operations	$	14		$	107		$	185		$	580
Basic and diluted net income (loss) per share:
Continuing operations	$	(0.12	)	$	(0.20	)	$	(0.10	)	$	(0.14	)
Discontinued operations	$	0.00		$	0.00		$	0.00		$	0.01
2010
Operating expenses	$	15,375		$	20,326		$	16,815		$	13,111
Net loss from continuing operations	$	(16,609	)	$	(21,570	)	$	(18,136	)	$	(19,119	)
Net income (loss) from discontinued operations	$	(2,209	)	$	(1,187	)	$	157		$	12,608
Basic and diluted net income (loss) per share:
Continuing operations	$	(0.21	)	$	(0.27	)	$	(0.22	)	$	(0.23	)
Discontinued operations	$	(0.02	)	$	(0.01	)	$	0.00		$	0.15