Segment Information - Schedule of Reportable Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues from Operations
Revenues from operations	$ 7,059	$ 7,838	$ 15,677	$ 14,470
Operating Income
Total operating income	184	856	844	1,290
Interest (expense) income, net	(4)		(4)	1
Loss on equity investment in unconsolidated subsidiary	(100)		(139)
Other income (expense), net	232	117	(152)	270
Total other income (expense)	128	117	(295)	271
INCOME BEFORE INCOME TAXES	312	973	549	1,561
Unallocated corporate expense [Member]
Operating Income
Total operating income	(167)	(311)	(415)	(528)
Electronic components [Member]
Revenues from Operations
Revenues from operations	6,769	7,462	15,045	13,793
Electronic components [Member] | Reportable Segment [Member]
Operating Income
Total operating income	314	1,096	1,185	1,654
Electronic instruments [Member]
Revenues from Operations
Revenues from operations	290	376	632	677
Electronic instruments [Member] | Reportable Segment [Member]
Operating Income
Total operating income	$ 37	$ 71	$ 74	$ 164