Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 1,397	$ 6,767
Restricted cash	61	21
Other current assets	161	99
Total current assets	1,619	6,887
Property and equipment, net	60	41
In-process research and development acquired	27,500	27,500
Intangible assets, net	3,263	3,415
Security deposits	132	21
Total assets	32,574	37,864
Current liabilities
Accounts payable	2,984	1,243
Accrued expenses	2,096	4,133
Due to related parties	30	30
Notes and loans payable, current portion	2,443	2,011
Total current liabilities	7,553	7,417
Grants payable	469	469
Notes and loans payable, net of current portion	164	1,564
Deferred tax liability	10,870	10,870
Total liabilities	$ 19,056	$ 20,320
Commitments and contingencies
Stockholders' Equity
Common stock, $0.0001 par value; authorized 225,000,000 shares; 25,201,672 and 23,975,358 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	$ 3	$ 2
Additional paid-in capital	65,105	62,550
Accumulated deficit	(52,262)	(45,829)
Total stockholders' equity	13,518	17,544
Total liabilities and stockholders' equity	32,574	37,864
Series C Preferred Stock [Member]
Stockholders' Equity
Preferred Stock, Value, Issued	672	821
Total stockholders' equity	672
Undesignated preferred stock [Member]
Stockholders' Equity
Preferred Stock, Value, Issued	$ 0	$ 0