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Development Project Charge	9 Months Ended
	Jan. 31, 2014
Text Block [Abstract]
Development Project Charge	11. DEVELOPMENT PROJECT CHARGE In the three and nine months ended January 31, 2014, we recorded a charge of $1,440 for deferred costs associated with a gas pipeline development project in Maine no longer deemed viable. As of January 31, 2014 and April 30, 2013, we had $0 and $1,644 of deferred costs associated with development projects included in other non-current assets within our consolidated balance sheets.

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- Definition

The entire disclosure for the write-off of deferred costs associated with development projects no longer deemed viable.

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No definition available.

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