Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Segment	Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable business segments | Segment			2
Revenues from Operations
Revenues from operations	$ 5,859	$ 5,231	$ 11,483	$ 9,987
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	44	26	152	(136)
Interest expense, net	(5)	(7)	(11)	(13)
Other income (expense), net	6	(4)	18	38
Total other income (expense)	1	(11)	7	25
Income (Loss) Before Income Taxes	45	15	159	(111)
Unallocated corporate expense [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	(358)	(226)	(702)	(474)
Electronic components [Member]
Revenues from Operations
Revenues from operations	5,626	5,231	11,018	9,987
Electronic components [Member] | Reportable Segment [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	391	$ 252	807	$ 338
Electronic instruments [Member]
Revenues from Operations
Revenues from operations	233		465
Electronic instruments [Member] | Reportable Segment [Member]
Operating Income (Loss) from Operations
Consolidated total operating income (loss)	$ 11		$ 47