Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Total revenues	$ 412	$ 304	$ 336
Costs and expenses:
Cost of sales (exclusive of depreciation shown below)		334	357
General and administrative	9,330	13,709	10,084
Depreciation	292	270	254
Total costs and expenses	9,622	14,313	10,695
Operating loss	(9,210)	(14,009)	(10,359)
Interest expense, net	(14,875)	(10,070)	(8,518)
Loss on extinguishment of debt and debt refinancing	(2,250)
Other income, net		70
Loss before income taxes	(26,335)	(24,009)	(18,877)
Income tax (benefit) expense	4	4	4
Net loss and comprehensive loss	$ (26,339)	$ (24,013)	$ (18,881)
Basic and diluted net loss per share (in dollars per share)	$ (1.41)	$ (1.35)	$ (1.15)
Weighted-average shares outstanding (in shares)	18,719	17,782	16,370