Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Total revenues	$ 112	$ 111	$ 329	$ 327
Costs and expenses:
General and administrative	2,536	2,456	7,364	8,747
Depreciation	64	69	194	212
Total costs and expenses	2,600	2,525	7,558	8,959
Operating loss	(2,488)	(2,414)	(7,229)	(8,632)
Interest expense, net	(3,829)	(3,586)	(11,167)	(14,662)
Interest income	77	9	157	9
Loss before income taxes	(6,240)	(5,991)	(18,239)	(26,786)
Income tax expense		1	4	3
Net loss and comprehensive loss applicable to common stock	$ (6,240)	$ (5,992)	$ (18,243)	$ (26,789)
Basic and diluted net loss per common share (in dollars per share)	$ (260)	$ (260)	$ (770)	$ (1,190)
Basic and diluted weighted average shares outstanding (in shares)	24,451	22,857	23,809	22,471
Total revenues	$ 112	$ 111	$ 329	$ 327
Loss on extinguishment of debt and debt refinancing				$ (3,501)