Investments

12 Months Ended

Apr. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Investments

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

The total carrying value of all investments on a consolidated basis was approximately $16.8 million and $16.0 million at April 30, 2022 and 2021, respectively.

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

In fiscal 2022, 2021 and 2020, the Company’s investment portfolio of marketable equity securities experienced unrealized holding gains of $0.6 million, unrealized holding gains of $3.5 million and unrealized holding gains of $0.7 million, respectively. In fiscal 2022, 2021 and 2020, the Company’s investment portfolio of debt securities experienced unrealized holding gains of approximately $24,000, unrealized holding gains of approximately $74,000 and unrealized holding losses of approximately $0.6 million, respectively. In fiscal 2022, 2021 and 2020, the Company’s investment portfolio of marketable equity securities experienced realized holding losses of approximately $0.2 million, realized holding gains of $0.1 million and realized holding losses of $0.2 million, respectively. In fiscal 2022, 2021 and 2020, the Company’s investment portfolio of debt securities experienced realized holding losses of approximately $38,000 in 2022, realized holding losses of $0.1 million in 2021 and realized holding gains of $0.7 million in 2020. Unrealized and realized gains and losses are included in "Other income, net" in the Company’s consolidated statements of operations.