CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
General and administrative expense	$ 6,715	$ 5,148	$ 12,089	$ 9,891
Operating loss	(6,715)	(5,148)	(12,089)	(9,891)
Other income (loss), net	(2,724)	4,819	(1,967)	7,903
Interest income	790	595	1,524	1,494
Interest expense	(1,074)	(1,456)	(2,143)	(2,908)
Equity loss	(18,400)	(8,947)	(25,387)	(16,395)
Net loss before income taxes	(28,123)	(10,137)	(40,062)	(19,797)
Income tax benefit (expense)	0	0	0	0
Net loss	$ (28,123)	$ (10,137)	$ (40,062)	$ (19,797)
Net loss per share:
Basic	$ (1.33)	$ (0.48)	$ (1.90)	$ (0.95)
Diluted	$ (1.33)	$ (0.48)	$ (1.90)	$ (0.95)
Weighted average shares used in computing basic and diluted loss per share:	21,128	20,927	21,119	20,903