Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Total revenues	$ 109	$ 108	$ 217	$ 216
Costs and expenses:
General and administrative	2,300	2,141	4,828	6,291
Depreciation	64	72	130	143
Total costs and expenses	2,364	2,213	4,958	6,434
Operating loss	(2,255)	(2,105)	(4,741)	(6,218)
Interest expense, net	(3,822)	(7,963)	(7,338)	(11,076)
Interest income	48		80
Loss on extinguishment of debt and debt refinancing		(3,501)		(3,501)
Loss before income taxes	(6,029)	(13,569)	(11,999)	(20,795)
Income tax expense	3	1	4	2
Net loss and comprehensive loss applicable to common stock	$ (6,032)	$ (13,570)	$ (12,003)	$ (20,797)
Basic and diluted net loss per common share (in dollars per share)	$ (250)	$ (600)	$ (510)	$ (930)
Basic and diluted weighted average shares outstanding (in shares)	23,883	22,451	23,482	22,275
Total revenues	$ 109	$ 108	$ 217	$ 216