Consolidated Balance Sheets - USD ($) $ in Thousands	Apr. 30, 2019	Apr. 30, 2018
Current assets:
Cash and cash equivalents	$ 3,683	$ 7,869
Marketable securities	8,199	6,149
Accounts receivable, net of allowance for doubtful accounts of $183 in 2019 and $181 in 2018	6,362	4,268
Costs and estimated earnings in excess of billings, net	6,670	5,094
Inventories, net	23,356	26,186
Prepaid income taxes	499	1,459
Prepaid expenses and other	2,583	1,050
Current assets held for sale	1,347	0
Total current assets	52,699	52,075
Property, plant and equipment, at cost, net of accumulated depreciation and amortization	13,038	14,127
Goodwill and other intangible assets	617	617
Cash surrender value of life insurance	14,292	13,915
Other assets	5,923	2,850
Non-current assets held for sale	202	0
Total assets	86,771	83,584
Current liabilities:
Accounts payable - trade	1,188	1,841
Accrued liabilities	3,571	3,416
Current liabilities held for sale	1,078	0
Total current liabilities	5,837	5,257
Deferred compensation	14,216	13,541
Deferred rent and other liabilities	1,376	1,524
Non-current liabilities held for sale	2,253	0
Total liabilities	23,682	20,322
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 8,980 outstanding in 2019; 8,867 outstanding in 2018	9,164	9,164
Additional paid-in capital	56,831	56,439
Accumulated deficit	(2,111)	(65)
	63,884	65,538
Common stock reacquired and held in treasury - at cost (184 shares in 2019 and 297 shares in 2018)	(841)	(1,361)
Accumulated other comprehensive income (loss)	46	(915)
Total stockholders’ equity	63,089	63,262
Total liabilities and stockholders’ equity	$ 86,771	$ 83,584