CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating expenses:
Research and development	$ 4,006	$ 6,634
General and administrative	3,616	4,528
Total operating expenses:	7,622	11,162
Other expense:
Other expense, net	275	579
Loss on extinguishment of debt	2,104
Net loss from continuing operations	(10,001)	(11,741)
Discontinued operations (Note 2):
Income (loss) from discontinued operations	12,898	(277)
Net income (loss)	$ 2,897	$ (12,018)
Net loss from continuing operations	$ (3.06)	$ (7.46)
Net income (loss) from discontinued operations	3.94	(0.18)
Basic and diluted net income (loss) per basic share	$ 0.89	$ (7.64)
Weighted-average shares used to compute per share calculations	3,270,089	1,573,233