Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Total revenues	$ 108	$ 108
Costs and expenses:
General and administrative	2,528	4,150
Depreciation	66	71
Total costs and expenses	2,594	4,221
Operating loss	(2,486)	(4,113)
Interest expense, net	(3,484)	(3,113)
Loss before income taxes	(5,970)	(7,226)
Income tax expense	1	1
Net loss and comprehensive loss	$ (5,971)	$ (7,227)
Basic and diluted net loss per common share (in dollars per share)	$ (260)	$ (330)
Basic and diluted weighted average shares outstanding (in shares)	23,075	22,097