Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenue	$ 848	$ 1,089	$ 1,343	$ 2,117
Cost of goods sold	633	800	1,020	1,510
Gross profit	215	289	323	607
Operating expenses:
General and administrative	524	409	1,275	856
Sales and marketing	67	68	137	142
Gain on sale or disposal of assets	(370)	(1,823)	(370)	(1,823)
Income (loss) from continuing operations	(6)	1,635	(719)	1,432
Other income:
Interest income	2	32	3	106
Unrealized gain (loss) on investments		156		(1,824)
Realized loss on investments		(37)
Realized gain (loss) on foreign currency translation		5		(8)
Total other income (loss)	2	156	3	(1,726)
Income (loss) before income taxes from continuing operations	(4)	1,791	(716)	(294)
Income tax expense		4		9
Income (loss) from continuing operations	(4)	1,787	(716)	(303)
Loss from discontinued operations, net of taxes	(115)	(76)	(210)	(195)
Income tax expense from discontinued operations
Loss from discontinued operations	(115)	(76)	(210)	(195)
Net income (loss)	$ (119)	$ 1,711	$ (926)	$ (498)
Continuing operations (in Dollars per share)	$ 0.00	$ 0.71	$ (0.29)	$ (0.12)
Discontinued operations (in Dollars per share)	(0.05)	(0.03)	(0.09)	(0.08)
Net income (loss) per common share: diluted
Continuing operations (in Dollars per share)	0.00	0.71	(0.29)	(0.12)
Discontinued operations (in Dollars per share)	$ (0.05)	$ (0.03)	$ (0.09)	$ (0.08)
Weighted average common shares outstanding used in computing net income (loss) per common share
Basic (in Shares)	2,433,725	2,513,945	2,433,725	2,571,706
Diluted (in Shares)	2,433,725	2,517,936	2,433,725	2,571,706