Segment Information - Schedule of Reportable Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues
Revenues from operations	$ 7,434	$ 6,882	$ 15,542	$ 13,418
Operating Income (Loss)
Total operating income	124	616	345	556
Interest income (expense), net	7	(3)		(6)
Loss on equity investment in unconsolidated subsidiary		(676)		(752)
Investment (loss) income	(2,373)	75	(2,328)	202
Other (expense) income, net	(8)	(5)	(24)	40
Total other expense, net	(2,374)	(609)	(2,352)	(516)
(LOSS) INCOME BEFORE INCOME TAXES	(2,250)	7	(2,007)	40
Unallocated corporate expense [Member]
Operating Income (Loss)
Total operating income	(565)	(320)	(1,406)	(745)
Electronic components [Member]
Revenues
Revenues from operations	7,064	6,407	14,755	12,661
Electronic components [Member] | Reportable Segment [Member]
Operating Income (Loss)
Total operating income	711	834	1,765	1,183
Electronic instruments [Member]
Revenues
Revenues from operations	370	475	787	757
Electronic instruments [Member] | Reportable Segment [Member]
Operating Income (Loss)
Total operating income	$ (22)	$ 102	$ (14)	$ 118