Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 15,503	$ 23,099
Prepaid expenses and other current assets	471	529
Due from related party	18	64
Minority interest investment in former subsidiary	623	978
Total current assets	16,615	24,670
Long-term assets
Property and equipment, net	22	12
Intangible assets, net	17,497	18,469
Total assets	34,134	43,151
Current liabilities
Accounts payable	1,740	934
Accrued compensation and other current liabilities	1,115	943
Total current liabilities	2,855	1,877
Long-term liabilities
Contingent liability for Essentialis purchase price	6,038	5,649
Total liabilities	20,291	12,738
Commitments and contingencies (Note 6)
Stockholders’ equity
Common stock	32	32
Additional paid-in-capital	157,881	157,413
Accumulated deficit	(144,070)	(127,032)
Total stockholders’ equity	13,843	30,413
Total liabilities and stockholders’ equity	34,134	43,151
Series B Convertible Preferred Stock [Member]
Stockholders’ equity
Preferred stock
Series A Warrant Liability [Member]
Long-term liabilities
Warrant liability	51	49
2017 PIPE Warrant Liability [Member]
Long-term liabilities
Warrant liability	10,202	4,563
2018 PIPE Warrant Liability [Member]
Long-term liabilities
Warrant liability	$ 1,145	$ 600