Significant Customers (Tables)

9 Months Ended

Sep. 30, 2012

Risks and Uncertainties [Abstract]

Revenues attributable to sales to major customers

For the three and nine months ended September 30, 2012 and 2011, 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,
	2012	2011	2012	2011
Telvent	22.0%	15.3%	29.5%	14.4%
Duke	9.6%	32.7%	16.4%	28.5%
Eltel	13.7%	10.3%	9.6%	12.6%
EBV/Avnet	8.4%	8.8%	7.4%	10.3%
Total	53.7%	67.1%	62.9%	65.8%