Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2023	Apr. 30, 2022
Current assets:
Cash and cash equivalents	$ 12,049	$ 11,561
Marketable securities	0	9,964
Accounts receivable, net of allowance for doubtful accounts of $111 at April 30, 2023 and April 30, 2022	4,622	4,291
Contract assets	10,009	8,857
Inventories, net	20,526	19,906
Prepaid income taxes	30	269
Prepaid expenses and other	1,071	1,162
Total current assets	48,307	56,010
Property, plant, and equipment, net	7,093	8,564
Goodwill	617	617
Cash surrender value of life insurance	10,220	9,855
Other assets	877	909
Right-of-Use assets – operating leases	7,382	8,805
Total assets	74,496	84,760
Current liabilities:
Accounts payable – trade	1,464	1,080
Accrued liabilities	3,934	3,696
Loss provision accrual	1,544	4,243
Operating lease liability, current portion	1,753	1,744
Contract liabilities	18,586	11,098
Total current liabilities	27,281	21,861
Deferred compensation	8,314	8,730
Deferred taxes	8	8
Operating lease liability – non-current	5,883	7,353
Other liabilities	124	120
Total liabilities	41,610	38,072
Contingencies (Note 16)
Stockholders’ equity:
Preferred stock - $1.00 par value; authorized 600 shares, no shares issued
Common stock - $1.00 par value; authorized 20,000 shares, 9,374 shares issued and 9,373 shares outstanding at April 30, 2023; 9,298 shares issued and 9,297 shares outstanding at April 30, 2022	9,374	9,298
Additional paid-in capital	49,136	57,956
Accumulated deficit	(25,621)	(20,120)
Common stock reacquired and held in treasury - at cost (1 share at April 30, 2023 and April 30, 2022)	(3)	(6)
Accumulated other comprehensive income (loss)	0	(440)
Total stockholders’ equity	32,886	46,688
Total liabilities and stockholders’ equity	$ 74,496	$ 84,760