Summary of Significant Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2023

Accounting Policies [Abstract]

Cash and Cash Equivalents and Restricted Cash

The reconciliation between the consolidated balance sheet and the consolidated statement of cash flows at April 30 is as follows:

$ in thousands	2023		2022
Cash and cash equivalents	$	8,078	$	4,433
Restricted cash	5,737		2,461
Total cash, cash equivalents and restricted cash	$	13,815	$	6,894

Schedule Of Allowance For Doubtful Accounts

The activity in the allowance for doubtful accounts for each of the years ended April 30 was:

$ in thousands	2023		2022
Balance at beginning of year	$	357	$	636
Bad debt provision	120		92
Doubtful accounts written off (net)	(1)		(371)
Balance at end of year	$	476	$	357

Schedule of Property, Plant and Equipment

Property, plant and equipment consisted of the following at April 30:

$ in thousands	2023		2022		Useful Life
Land	$	41	$	41	N/A
Building and improvements	17,147		17,164		10-40 years
Machinery and equipment	44,180		43,121		5-10 years
Total	61,368		60,326
Less accumulated depreciation	(44,966)		(45,205)
Net property, plant and equipment	$	16,402	$	15,121

Fair Value Hierarchy for Assets and Liabilities

The following tables summarize the Company's fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring and nonrecurring basis as of April 30, 2023 and 2022 (in thousands):

	2023
	Level 1		Level 2		Level 3		Total
Financial Assets
Trading securities held in non-qualified compensation plans (1)	$	1,105	$	—	$	—	$	1,105
Cash surrender value of life insurance policies (1)	—		1,358		—		1,358
Total	$	1,105	$	1,358	$	—	$	2,463
Financial Liabilities
Non-qualified compensation plans (2)	$	—	$	2,910	$	—	$	2,910
Total	$	—	$	2,910	$	—	$	2,910

	2022
	Level 1		Level 2		Level 3		Total
Financial Assets
Trading securities held in non-qualified compensation plans (1)	$	1,219	$	—	$	—	$	1,219
Cash surrender value of life insurance policies (1)	—		1,371		—		1,371
Total	$	1,219	$	1,371	$	—	$	2,590
Financial Liabilities
Non-qualified compensation plans (2)	$	—	$	3,003	$	—	$	3,003
Total	$	—	$	3,003	$	—	$	3,003

(1)The Company maintains two non-qualified compensation plans which include investment assets in a rabbi trust. These assets consist of marketable securities, which are valued using quoted market prices multiplied by the number of shares owned, and life insurance policies, which are valued at their cash surrender value.

(2)Plan liabilities are equal to the individual participants' account balances and other earned retirement benefits.

Reconciliation of Basic to Diluted Weighted Average Shares Outstanding

The following is a reconciliation of basic to diluted weighted average common shares outstanding:

Shares in thousands	2023	2022
Weighted average common shares outstanding
Basic	2,824	2,786
Dilutive effect of stock options and RSUs	78	—
Weighted average common shares outstanding—diluted	2,902	2,786