Note 7 - Related Party Transactions (Tables)

9 Months Ended

Jan. 31, 2023

Notes Tables

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

	Three Months Ended January 31,				Nine Months Ended January 31,
($ in thousands)	2023		2022		2023		2022
Non-voting revenues interest in EAM	$	2,512	$	4,120	$	7,917	$	12,532
Non-voting profits interest in EAM		173		535		599		1,820
	$	2,685	$	4,655	$	8,516	$	14,352