Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets
Cash and cash equivalents	$ 4,543	$ 6,767
Restricted cash	31	21
Other current assets	258	99
Total current assets	4,832	6,887
Property and equipment, at cost, net of accumulated depreciation of $77 and $51	371	41
In-process research and development acquired	27,500	27,500
Intangible assets, net	3,111	3,415
Other assets	370	21
Total assets	36,184	37,864
Current liabilities
Accounts payable	2,439	1,243
Accrued expenses	2,660	4,133
Due to related parties	0	30
Derivative financial instruments, warrants	84	0
Notes and loans payable, current portion, net of debt discount	997	2,011
Obligations under capital lease, current portion	106	0
Total current liabilities	6,286	7,417
Grants payable	0	469
Notes and loans payable, net of current portion	2,886	1,564
Obligations under capital lease, net of current portion and debt discount	91	0
Series D preferred stock derivative liability	6,529	0
Deferred tax liability	10,870	10,870
Total liabilities	26,662	20,320
Series D Preferred Stock, net of discount, par value $0.0001, 12,000 shares authorized, 1,263 shares issued and 963 shares outstanding as of December 31, 2015 and 0 shares issued and outstanding as of December 31, 2014	$ 1,659	$ 0
Commitments and contingencies
Stockholders' Equity
Series C Preferred Stock, par value $0.0001; 15,000 shares authorized, 2,832 shares issued and 0 shares outstanding as of December 31, 2015, and 2,832 shares issued and outstanding, as of December 31, 2014	$ 0	$ 821
Common stock, $0.0001 par value; authorized 225,000,000 shares; 28,907,278 and 23,975,358 shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively	3	2
Additional paid-in capital	70,846	62,550
Accumulated deficit	(62,986)	(45,829)
Total stockholders' equity	7,863	17,544
Total liabilities and stockholders' equity	$ 36,184	$ 37,864