Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net revenue	$ 100		$ 100
Cost of goods sold
Gross profit	100		100
Operating expenses:
Selling, general and administrative	1,200	1,600	2,000	3,200
GBAM Fund expenses		100		200
Restructuring and other		100	100	100
Total operating expenses	1,100	1,800	2,100	3,500
Operating loss from continuing operations	(1,200)	(1,800)	(2,000)	(3,500)
Other income (expense):
Interest expense				(100)
Net loss from GBAM Fund activities		(400)		(500)
Other income, net		100		300
Total other income (expense)		(300)		(300)
Loss from continuing operations before income taxes	(1,100)	(2,100)	(2,000)	(3,800)
Income tax benefit
Loss from continuing operations	(1,100)	(2,100)	(2,000)	(3,800)
Discontinued Operations:
Income on sale of discontinued businesses, net of income taxes	500	0	10,500
Income from discontinued operations, net of income taxes		800	500	800
Income from discontinued businesses, net of income taxes	500	800	11,000	800
Net income (loss)	$ (600)	$ (1,300)	$ 9,000	$ (3,000)
Income (loss) per common share - basic and diluted:
Continuing operations	$ (0.22)	$ (0.41)	$ (0.39)	$ (0.75)
Discontinued operations	0.1	0.16	2.16	0.16
Net income (loss)	$ (0.12)	$ (0.25)	$ 1.77	$ (0.59)
Weighted average common shares outstanding:
Basic and diluted	5.1	5.1	5.1	5.1