FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

12 Months Ended

May 31, 2024

FAIR VALUE OF FINANCIAL INSTRUMENTS

Fair value of assets and liabilities

	Balance as of
(In thousands)	May 31, 2024		Level 1		Level 2		Level 3
Money market funds	$	44,280	$	44,280	$	-	$	-
Total	$	44,280	$	44,280	$	-	$	-

	Balance as of
(In thousands)	May 31, 2023		Level 1		Level 2		Level 3
Money market funds	$	27,022	$	27,022	$	-	$	-
U. S. treasury securities		17,853		17,853		-		-
Total	$	44,875	$	44,875	$	-	$	-