Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Current assets:
Cash and cash equivalents	$ 3,808	$ 3,683
Marketable securities	10,570	8,199
Accounts receivable, net of allowance for doubtful accounts of $183 in 2020 and $183 in 2019	4,392	6,362
Costs and estimated earnings in excess of billings, net	6,953	6,670
Inventories, net	22,958	23,356
Prepaid income taxes	849	499
Prepaid expenses and other	1,705	2,583
Current assets held for sale	0	1,347
Total current assets	51,235	52,699
Property, plant and equipment, at cost, net of accumulated depreciation and amortization	11,267	13,038
Goodwill	617	617
Cash surrender value of life insurance	14,790	14,292
Other assets	2,503	5,923
Right-of-Use assets – operating leases	10,864	0
Non-current assets held for sale		202
Total assets	91,276	86,771
Current liabilities:
Accounts payable - trade	1,424	1,188
Accrued liabilities	3,982	3,571
Loss Provision accrual	748	0
Operating lease liability	1,869	0
PPP loan	4,965	0
Current liabilities held for sale	0	1,078
Total current liabilities	12,988	5,837
Deferred compensation	14,258	14,216
Deferred taxes	8	0
Operating lease liability – non-current	9,444	0
Deferred rent and other liabilities	342	1,376
Non-current liabilities held for sale	0	2,253
Total liabilities	37,040	23,682
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, 9,164 shares issued and 9,121 outstanding in 2020; 8,980 outstanding in 2019	9,164	9,164
Additional paid-in capital	56,914	56,831
Accumulated deficit	(12,137)	(2,111)
	53,941	63,884
Common stock reacquired and held in treasury - at cost (43 shares in 2020 and 184 shares in 2019)	(195)	(841)
Accumulated other comprehensive income	490	46
Total stockholders’ equity	54,236	63,089
Total liabilities and stockholders’ equity	$ 91,276	$ 86,771