Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 8,481	$ 5,295
Short-term investments	899	251
Receivables	97	180
Prepaid and other current assets	480	180
Total current assets	9,957	5,906
Property and equipment, net	1,319	1,553
Notes receivable	56	54
Other assets	583	115
Total assets	11,915	7,628
Current liabilities:
Accounts payable	212	257
Accrued clinical and cost of other studies	921	993
Accrued compensation	716	327
Facility lease exit obligation	108	99
Other accrued liabilities	778	450
Total current liabilities	2,735	2,126
Deferred rent	121	99
Facility lease exit obligation, non-current	677	729
Other non-current liabilities	75	75
Note payable, net of discount and accrued interest	8,145	0
Total liabilities	11,753	3,029
Commitments and contingencies
Shareholders' equity:
Preferred stock, 5,000,000 shares authorized, none outstanding	0	0
Common stock, no par value; authorized shares: 213,527,214 at June 30, 2011 and December 31, 2010; issued and outstanding shares: 173,114,301 at June 30, 2011; 172,304,235 at December 31, 2010	359,328	358,424
Accumulated deficit	(359,166)	(353,825)
Total shareholders' equity	162	4,599
Total liabilities and shareholders' equity	$ 11,915	$ 7,628