Significant Customers (Tables)

9 Months Ended

Sep. 30, 2013

Risks and Uncertainties [Abstract]

Revenues attributable to sales to major customers

For the three and nine months ended September 30, 2013 and 2012, the percentage of the Company’s revenues attributable to sales made to these customers was as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2013		2012		2013		2012
Telvent	8.0	%	22	%	16.8	%	29.5	%
Avnet	17.1	%	8.4	%	13.8	%	7.4	%
Enel	14.0	%	6.1	%	12.6	%	3.2	%
Ubitronix	4.7	%	3.1	%	9.8	%	2.1	%
Duke	1.1	%	9.6	%	6.0	%	16.4	%
Ericsson	12.8	%	—	%	3.4	%	—	%
Eltel	0.2	%	13.7	%	1.3	%	9.6	%
Total	57.9	%	62.9	%	63.7	%	68.2	%