Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 19,402	$ 23,099
Prepaid expenses and other current assets	603	529
Due from related party	72	64
Minority interest investment in former subsidiary	788	978
Total current assets	20,865	24,670
Long-term assets
Property and equipment, net	19	12
Intangible assets, net	17,983	18,469
Total assets	38,867	43,151
Current liabilities
Accounts payable	1,258	934
Accrued compensation and other current liabilities	992	943
Total current liabilities	2,250	1,877
Long-term liabilities
Contingent liability for Essentialis purchase price	5,855	5,649
Total liabilities	15,236	12,738
Commitments and contingencies (Note 6)
Stockholders’ equity
Common stock	32	32
Additional paid-in-capital	157,661	157,413
Accumulated deficit	(134,062)	(127,032)
Total stockholders’ equity	23,631	30,413
Total liabilities and stockholders’ equity	38,867	43,151
Series B Convertible Preferred Stock [Member]
Stockholders’ equity
Preferred stock
Series A Warrant Liability [Member]
Long-term liabilities
Warrant liability	73	49
2017 PIPE Warrant Liability [Member]
Long-term liabilities
Warrant liability	6,274	4,563
2018 PIPE Warrant Liability [Member]
Long-term liabilities
Warrant liability	$ 784	$ 600