Related Party Transactions (Tables)

3 Months Ended

Jul. 31, 2013

Related Party Transactions [Abstract]

Schedule of non voting revenues interest and non voting profits interests

	Three Months Ended July 31,
($ in thousands)	2013		2012
Non-voting revenues interest in EAM	$	1,598	$	1,394
Non-voting profits interest in EAM		171		79
	$	1,769	$	1,473