Investments (Tables)

9 Months Ended

Jan. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of Investments

As of January 31, 2019 and April 30, 2018, investments consisted of the following:

Investments at January 31, 2019	Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Municipal bonds	$	5,487,000	$	65,000	$	(88,000	)	$	5,464,000
Corporate bonds		56,000		1,000		—			57,000
REITs		89,000		—		(2,000	)		87,000
Equity securities		16,532,000		2,933,000		(479,000	)		18,986,000
Money markets and CDs		1,176,000		—		—			1,176,000
Total	$	23,340,000	$	2,999,000	$	(569,000	)	$	25,770,000

Investments at April 30, 2018	Cost Basis		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Municipal bonds	$	5,984,000	$	66,000	$	(309,000	)	$	5,741,000
Corporate bonds		129,000		2,000		—			131,000
REITs		110,000		3,000		(7,000	)		106,000
Equity securities		15,930,000		3,714,000		(311,000	)		19,333,000
Money markets and CDs		1,035,000		—		—			1,035,000
Total	$	23,188,000	$	3,785,000	$	(627,000	)	$	26,346,000

Schedule of Unrealized Loss Breakdown by Investment

The following tables show the investments with unrealized losses that are not deemed to be “other-than-temporarily impaired”, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at January 31, 2019 and April 30, 2018, respectively.

Unrealized Loss Breakdown by Investment Type at January 31, 2019

	Less than 12 months					12 months or greater					Total
Description	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds	$	2,678,000	$	(33,000	)	$	618,000	$	(55,000	)	$	3,296,000	$	(88,000	)
REITs		—		—			87,000		(2,000	)		87,000		(2,000	)
Equity securities		4,806,000		(351,000	)		519,000		(128,000	)		5,325,000		(479,000	)
Total	$	7,484,000	$	(384,000	)	$	1,224,000	$	(185,000	)	$	8,708,000	$	(569,000	)

Unrealized Loss Breakdown by Investment Type at April 30, 2018

	Less than 12 months					12 months or greater					Total
Description	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Municipal bonds	$	960,000	$	(200,000	)	$	2,385,000	$	(109,000	)	$	3,345,000	$	(309,000	)
REITs		55,000		(6,000	)		27,000		(1,000	)		82,000		(7,000	)
Equity securities		2,545,000		(127,000	)		823,000		(184,000	)		3,368,000		(311,000	)
Total	$	3,560,000	$	(333,000	)	$	3,235,000	$	(294,000	)	$	6,795,000	$	(627,000	)