Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 6,514	$ 49
Restricted cash	49	81
Other current assets	199	137
Total current assets	6,762	267
Restricted cash, net of current portion		80
Property and equipment, at cost, net of $46 and $26 accumulated depreciation, as of March 31, 2014 and December 31, 2013, respectively	47	47
In-process research and development	27,500	27,500
Intangible assets, net	3,644	3,607
Total assets	37,953	31,501
Current liabilities
Accounts payable	4,084	5,181
Accrued expenses	2,458	3,572
Due to related parties	137	469
Notes and loans payable,— current portion	1,899	1,546
Deposits for future financing	329	500
Total current liabilities	8,578	11,268
Grants payable	523	521
Notes and loans payable, net of current portion	3,279	3,359
Warrant liability	9,087
Deferred tax liability	10,870	10,870
Total liabilities	32,337	26,018
Commitments and contingencies	0	0
Total stockholders’ equity	2,520	5,483
Mezzanine Equity [Member] | Series C Preferred Stock [Member]
Current liabilities
Preferred stock, par value $0.0001; 4,985,000 authorized, 4,981,935 shares available for issuance, none issued and outstanding, as of March 31, 2014 and December 31, 2013, respectively	3,096
Mezzanine Equity [Member]
Current liabilities
Preferred stock, par value $0.0001; 4,985,000 authorized, 4,981,935 shares available for issuance, none issued and outstanding, as of March 31, 2014 and December 31, 2013, respectively	0	0
Common stock, $.0001 par value; authorized 225,000,000 shares; issued and outstanding 13,991,992 shares and 13,276,037 shares at March 31, 2014 and December 31, 2013, respectively	1	1
Additional paid-in capital	29,577	27,761
Accumulated deficit	(27,058)	(22,279)
Total stockholders’ equity	2,520	5,483
Total liabilities and stockholders’ equity	$ 37,953	$ 31,501