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Customer Concentration
3 Months Ended
Mar. 31, 2013
Risks and Uncertainties [Abstract]  
Customer Concentration
Customer Concentration
A significant portion of the Company’s electrical construction revenue has historically been derived from three or four utility customers each year. For the three months ended March 31, 2013 and 2012, the three largest customers accounted for 63% and 65%, respectively, of the Company’s total revenue.