Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 31, 2021	Apr. 30, 2020
Current assets:
Cash and cash equivalents	$ 7,255	$ 3,808
Marketable securities	10,480	10,570
Accounts receivable, net of allowance for doubtful accounts of $183 at January 31, 2021 and April 30, 2020	5,096	4,392
Costs and estimated earnings in excess of billings, net	287	6,953
Inventories, net	20,974	22,958
Prepaid income taxes	457	849
Prepaid expenses and other	1,791	1,705
Total current assets	46,340	51,235
Property, plant and equipment, at cost, net of accumulated depreciation and amortization	9,895	11,267
Goodwill	617	617
Cash surrender value of life insurance	15,475	14,790
Other assets	2,114	2,503
Right-of-Use assets – operating leases	10,094	10,864
Total assets	84,535	91,276
Current liabilities:
Accounts payable – trade	1,181	1,424
Accrued liabilities	4,020	3,982
Loss provision accrual	101	748
Operating lease liability	1,751	1,869
Current debt		4,965
Total current liabilities	7,053	12,988
Deferred compensation	14,484	14,258
Deferred taxes	8	8
Operating lease liability – non-current	8,656	9,444
Other liabilities	373	342
Total liabilities	30,574	37,040
Commitments and contingencies
Stockholders’ equity:
Preferred stock - $1.00 par value; authorized 600 shares, no shares issued
Common stock - $1.00 par value; authorized 20,000 shares, 9,194 shares issued and 9,193 shares outstanding at January 31, 2021; 9,164 shares issued and 9,121 shares outstanding at April 30, 2020	9,194	9,164
Additional paid-in capital	57,192	56,914
Accumulated deficit	(12,870)	(12,137)
Common stock reacquired and held in treasury - at cost (1 share at January 31, 2021 and 43 shares at April 30, 2020)	(6)	(195)
Accumulated other comprehensive income	451	490
Total stockholders’ equity	53,961	54,236
Total liabilities and stockholders’ equity	$ 84,535	$ 91,276