Note 3 - Related Party Transactions (Tables)

12 Months Ended

Apr. 30, 2019

Notes Tables

Schedule of Non Voting Revenues Interest and Non Voting Profits Interests [Table Text Block]

	Fiscal Years Ended April 30,
($ in thousands)	2019		2018		2017
Non-voting revenues interest in EAM	$	8,260	$	8,040	$	7,195
Non-voting profits interest in EAM		1,049		746		519
	$	9,309	$	8,786	$	7,714