Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Statement [Abstract]
Net revenue			$ 100
Cost of goods sold
Gross profit			100
Operating expenses:
Selling, general and administrative	500	1,900	2,500	5,100
GBAM Fund expenses		100		300
Restructuring and other			100	100
Total operating expenses	500	2,000	2,600	5,500
Operating loss from continuing operations	(500)	(2,000)	(2,500)	(5,500)
Other income (expense):
Interest expense				(100)
Net loss from GBAM Fund activities		(200)		(700)
Other income, net		100		400
Total other income (expense)		(100)		(400)
Loss from continuing operations before income taxes	(500)	(2,100)	(2,500)	(5,900)
Income tax benefit
Income (loss) from continuing operations	(500)	(2,100)	(2,500)	(5,900)
Discontinued Operations:
Income on sale of discontinued businesses, net of income taxes		6,100	10,500	6,100
Income from discontinued operations, net of income taxes	(200)	2,900	300	3,700
Income from discontinued businesses, net of income taxes	(200)	9,000	10,800	9,800
Net income (loss)	$ (700)	$ 6,900	$ 8,300	$ 3,900
Income (loss) per common share - basic and diluted:
Continuing operations	$ (19.86)	$ (82.62)	$ (99.44)	$ (233.75)
Discontinued operations	(7.95)	354.08	421.67	388.26
Net income (loss)	$ (27.81)	$ 271.46	$ 322.23	$ 154.51
Weighted average common shares outstanding:
Basic and diluted (in thousands)	25,100	25,400	25,600	25,200