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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Apr. 30, 2026
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 thousands20262025
Cash and cash equivalents$9,950 $14,942 
Restricted cash1,667 2,222 
Total cash, cash equivalents and restricted cash$11,617 $17,164 
Schedule Of Allowance For Doubtful Accounts
The activity in the allowance for credit losses for each of the years ended April 30 was:
$ in thousands20262025
Balance at beginning of year$530 $588 
Provision for credit losses
343 68 
Write-offs, net
(240)(126)
Balance at end of year$633 $530 
Schedule of Property, Plant and Equipment Property, plant and equipment consisted of the following at April 30:
$ in thousands20262025Useful Life
Land$41 $41 N/A
Building and improvements19,086 18,240 
2-40 years
Machinery and equipment55,248 53,702 
2-10 years
Total74,375 71,983 
Less accumulated depreciation(52,008)(48,809)
Net property, plant and equipment$22,367 $23,174 
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, 2026 and 2025 (in thousands):
2026
Level 1Level 2Level 3Total
Financial Assets
Trading securities held in non-qualified compensation plans (1)
$2,720 $— $— $2,720 
Cash surrender value of life insurance policies (1)
— 1,587 — 1,587 
Total$2,720 $1,587 $— $4,307 
Financial Liabilities
Non-qualified compensation plans (2)
$— $4,807 $— $4,807 
Total$— $4,807 $— $4,807 
2025
Level 1Level 2Level 3Total
Financial Assets
Trading securities held in non-qualified compensation plans (1)
$1,861 $— $— $1,861 
Cash surrender value of life insurance policies (1)
— 1,403 — 1,403 
Total$1,861 $1,403 $— $3,264 
Financial Liabilities
Non-qualified compensation plans (2)
$— $3,708 $— $3,708 
Total$— $3,708 $— $3,708 

(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 thousands20262025
Weighted average common shares outstanding
Basic2,863 2,862 
Dilutive effect of stock options and RSUs120 117 
Weighted average common shares outstanding—diluted2,983 2,979