Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill	$ 4,980	$ 5,283	$ 5,146
Goodwill impairment value		0
Indefinite-lived intangible assets	370	390
Indefinite-lived intangible assets impairment value	0	0
Product warranty, limited parts and labor warranty, period	1 year
Product warranty, limited parts and labor warranty on communications test instruments and network access products, period	2 years
Foreign currency transactions Included in other income/(expense) gain net	283
Foreign currency transactions Included in other income/(expense) loss net		130
Concentration risk, percentage	10.00%	10.00%
Service revenue contributed, percentage	5.00%
Cost of research and development	1,265	1,132
Shipping and handling costs	$ 448	$ 367
Sales Net [Member]
Concentration risk customer	One customer	largest customer
Concentration risk, percentage	10.70%	11.60%