Segment Information - Schedule of Reportable Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Revenues from Operations
Revenues from operations	$ 24,870	$ 22,402
Operating Income from Operations
Consolidated total operating income	1,430	276
Interest income (expense), net	2	(11)
Other income (expense), net	138	(46)
Total other income (expense)	140	(57)
Income Before Income Taxes	1,570	219
Capital Expenditures
Total capital expenditures	324	131
Total Assets
Total assets	30,075	27,555
Unallocated corporate expense [Member]
Operating Income from Operations
Consolidated total operating income	(1,144)	(1,040)
Total Assets
Total assets	17,337	14,845
Electronic components [Member]
Revenues from Operations
Revenues from operations	23,793	21,516
Electronic components [Member] | Reportable Segment [Member]
Operating Income from Operations
Consolidated total operating income	2,525	1,260
Capital Expenditures
Total capital expenditures	324	131
Total Assets
Total assets	11,877	11,899
Electronic instruments [Member]
Revenues from Operations
Revenues from operations	1,077	886
Electronic instruments [Member] | Reportable Segment [Member]
Operating Income from Operations
Consolidated total operating income	49	56
Total Assets
Total assets	$ 861	$ 811