Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Revenues	$ 19,490	$ 20,582
Cost of goods sold
Cost of goods sold	18,063	19,417
Write down of inventory	546
Total cost of goods sold	18,609	19,417
Gross profit	881	1,165
Operating expenses
Selling, general and administrative	5,165	12,918
Total operating expenses	5,165	12,918
Loss from continuing operations	(4,284)	(11,753)
Interest (income) expense	(334)	396
Gain on sale of subsidiaries		4,207
Other (income) expense	(969)	2,817
Loss before taxes	(2,981)	(10,759)
Income tax expense	5	1,278
Net loss from continuing operations	(2,986)	(12,037)
Discontinued operations (Note 8)
Loss from operations of discontinued business units		(2,351)
Gain on sale of discontinued subsidiaries		13,686
Income tax expense		330
Income from discontinued operations, net of income taxes		11,005
Net loss	$ (2,986)	$ (1,032)
Basic
Loss from continuing operations (in dollars per share)	$ (0.34)	$ (1.38)
Income from discontinued operations (in dollars per share)		1.26
Net loss (in dollars per share)	(0.34)	(0.12)
Diluted
Loss from continuing operations (in dollars per share)	(0.34)	(1.38)
Income from discontinued operations (in dollars per share)		1.26
Net loss (in dollars per share)	$ (0.34)	$ (0.12)
Weighted average common shares outstanding:
Basic (in shares)	8,726	8,726
Diluted (in shares)	8,726	8,726