Condensed Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash	$ 7,732	$ 4,946
Restricted cash	20	20
Prepaid expenses	370	135
Other current assets	33	142
Total current assets	8,155	5,243
Furniture and fixtures, equipment and leasehold improvements	365	370
Accumulated depreciation	(357)	(357)
Net furniture and fixtures, equipment and leasehold improvements	8	13
License agreements, net of accumulated amortization of $1,358 and $1,309 at June 30, 2013 and December 31, 2012, respectively	142	191
Total assets	8,305	5,447
Current liabilities:
Accounts payable	430	416
Accrued research and development	30	181
Accrued other	431	304
Total current liabilities	891	901
Commitments and contingencies
Stockholders' equity
Preferred stock, $.01 par value, 15,000 shares authorized; 5 and 0 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively
Common stock, $.01 par value, 100,000 shares authorized; 2,274 and 1,746 shares issued and outstanding at June 30, 2013 and December 31, 2012, respectively	23	17
Additional paid-in capital	238,838	229,961
Accumulated deficit	(231,447)	(225,432)
Total stockholders' equity	7,414	4,546
Total liabilities and stockholders' equity	$ 8,305	$ 5,447