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Commitments and Contingencies
3 Months Ended
Mar. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Commitments and Contingencies
Commitments and Contingencies
In certain circumstances, the Company is required to provide performance bonds to secure its contractual commitments. Management is not aware of any performance bonds issued for the Company that have ever been called by a customer. As of March 31, 2013, outstanding performance bonds issued on behalf of the Company’s electrical construction subsidiary amounted to approximately $131.4 million.