CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 29,583	$ 4,565
Prepaid expenses and other current assets	451	99
Total current assets	30,034	4,664
Fixed assets, net	59	15
Other assets, net	1,939	1,385
Total assets	32,032	6,064
Current Liabilities
Accounts payable	1,508	1,145
Accrued expenses	329	253
Total current liabilities	1,837	1,398
Stockholders' Equity
Undesignated Preferred Stock, $.001 par value, 5,000,000 shares authorized, none issued and outstanding	0	0
Common Stock, $.001 par value, 75,000,000 shares authorized, 17,228,707 and 12,470,694 shares issued, respectively and 17,116,357 and 12,358,344 shares outstanding, respectively	17	12
Additional paid-in capital	233,416	197,769
Cost of treasury stock, 112,350 shares	(1,380)	(1,380)
Deficit accumulated during the development stage	(201,858)	(191,735)
Total stockholders' equity	30,195	4,666
Total liabilities and stockholders' equity	$ 32,032	$ 6,064