Consolidated Balance Sheets - USD ($)	Sep. 30, 2023	Sep. 30, 2022
Current assets:
Cash and cash equivalents	$ 17,031,000	$ 9,581,000
Marketable securities at fair value (cost of $85,514,000 at September 30, 2023 and $94,879,000 at September 30, 2022)	84,252,000	89,300,000
Accounts receivable, less allowance for doubtful accounts of $545,000 at September 30, 2023 and $370,000 at September 30, 2022	2,467,000	2,996,000
Costs and estimated earnings in excess of billings	1,508,000	2,118,000
Inventories, net	71,527,000	55,815,000
Prepaid expenses	2,169,000	2,669,000
Total current assets	178,954,000	162,479,000
Property and equipment, net	13,246,000	13,491,000
Deferred and other income taxes	3,167,000	2,893,000
Other long-term assets	381,000	450,000
Total Assets	195,748,000	179,313,000
Current liabilities:
Accounts payable	3,269,000	4,251,000
Customer deposits	6,815,000	5,864,000
Accrued expenses	3,753,000	1,885,000
Current operating lease liabilities	328,000	390,000
Total current liabilities	14,165,000	12,390,000
Non-current operating lease liabilities	0	6,000
Total liabilities	14,165,000	12,396,000
Commitments and contingencies
Shareholders' equity:
Preferred stock, par value $.10 per share; 300,000 shares authorized; none issued	0	0
Capital in excess of par value	12,590,000	12,590,000
Retained earnings	167,527,000	152,861,000
Total shareholders' equity	181,583,000	166,917,000
Total Liabilities and Shareholders' Equity	195,748,000	179,313,000
Common Stock [Member]
Shareholders' equity:
Common stock	1,234,000	1,234,000
Class B Stock [Member]
Shareholders' equity:
Common stock	$ 232,000	$ 232,000