Investments (Tables)

12 Months Ended

Apr. 30, 2018

Investments, Debt and Equity Securities [Abstract]

Components of Investments

Investments consist of the following (in thousands):

	April 30,
	2018		2017
Trading:
Debt securities—Tax-exempt state and municipal bonds	$	23,889	$	14,803
Marketable equity securities		11,125		8,984
	$	35,014	$	23,787

Contractual Maturities of Debt Securities Classified as Trading

The contractual maturities of debt securities classified as trading at April 30, 2018 and 2017 were as follows (in thousands):

	2018		2017
Due within one year	$	14,996	$	10,368
Due within two years		8,893		4,435
Due within three years		—		—
Due after three years		—		—
	$	23,889	$	14,803