Summary of Significant Accounting Policies Significant Accounts receivable balances (Tables)

12 Months Ended

Dec. 31, 2012

Significant Accounts receivable balances [Abstract]

Significant Accounts Receivable [Table Text Block]

As of December 31, 2012 and 2011, the percentage of the Company's total accounts receivable balance that were due from the following significant customers is as follows (refer to Note 6 “Significant Customers” for a discussion of revenues generated from the Company's significant customers):

	December 31,
	2012	2011
Telvent Energia y Medioambiente SA	46.1%	46.2%
Duke Energy Corporation	—%	15.7%
Enel Distribuzione Spa	9.4%	—%
Eltel Networks A/S	1.3%	7.5%
EBV Electronik GmbH / Avnet Europe Comm VA	9.2%	2.5%
Total	66.0%	71.9%