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Severance and Reorganization
6 Months Ended
Oct. 31, 2014
Restructuring and Related Activities [Abstract]  
Severance and Reorganization
10. SEVERANCE AND REORGANIZATION

In the three and six months ended October 31, 2013, we recorded charges totaling $53 and $161, respectively, for severance costs associated with various planned reorganization efforts including the divestiture of Maine Energy Recovery Company LP (“Maine Energy”) discussed further in Note 11.