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Related Party Transactions (Tables)

6 Months Ended

Oct. 31, 2014

Related Party Transactions [Abstract]

Schedule of non voting revenues interest and non voting profits interests

		Three Months Ended October 31,								Six Months Ended October 31,
($ in thousands)		2014				2013				2014				2013
Non-voting revenues interest in EAM		$	1,803			$	1,663			$	3,636			$	3,261
Non-voting profits interest in EAM			146				191				335				362
		$	1,949			$	1,854			$	3,971			$	3,623

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Schedule of non voting revenues interest and non voting profits interests.

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