Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) Segment	Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable business segments | Segment	2
Revenues from Operations
Revenues from operations	$ 5,624	$ 4,756
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	108	(162)
Interest expense, net	(6)	(6)
Other income, net	12	42
Total other income	6	36
Income (Loss) Before Income Taxes	114	(126)
Unallocated corporate expense [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	(254)	(248)
Electronic components [Member]
Revenues from Operations
Revenues from operations	5,392	4,756
Electronic components [Member] | Reportable Segment [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	326	86
Electronic instruments [Member]
Revenues from Operations
Revenues from operations	232
Electronic instruments [Member] | Reportable Segment [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	$ 36	$ 0