Investments (Tables)

12 Months Ended

Apr. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Investments

Investments consist of the following (in thousands): 

	April 30,
	2022		2021
Trading:
Debt securities—Tax-exempt state and municipal bonds	$	—	$	674
Marketable equity securities	16,826		15,332
	$	16,826	$	16,006

Contractual Maturities of Debt Securities Classified as Trading

The contractual maturities of debt securities classified as trading at April 30, 2022 and 2021 were as follows (in thousands): 

	2022		2021
Due within one year	$	—	$	674
Due within two years	—		—
Due within three years	—		—
Due after three years	—		—
	$	—	$	674