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Condensed Consolidated Balance Sheets - USD ($)
Dec. 31, 2022
Sep. 30, 2022
Current assets:    
Cash and cash equivalents $ 5,978,000 $ 9,581,000
Marketable securities at fair value (cost of $94,965,000 at December 31, 2022 and $94,879,000 at September 30, 2022) 91,718,000 89,300,000
Accounts receivable, less allowance for doubtful accounts of $442,000 at December 31, 2022 and $370,000 at September 30, 2022 4,659,000 2,996,000
Costs and estimated earnings in excess of billings 4,950,000 2,118,000
Inventories, net 59,315,000 55,815,000
Prepaid expenses and other current assets 2,633,000 2,669,000
Total current assets 169,253,000 162,479,000
Property and equipment, net 13,334,000 13,491,000
Deferred and other income taxes 2,403,000 2,893,000
Other long-term assets 346,000 450,000
Total Assets 185,336,000 179,313,000
Current liabilities:    
Accounts payable 4,385,000 4,251,000
Customer deposits 8,387,000 5,864,000
Accrued expenses 1,878,000 1,885,000
Current operating lease liabilities 293,000 390,000
Total current liabilities 14,943,000 12,390,000
Non-current operating lease liabilities 0 6,000
Total liabilities 14,943,000 12,396,000
Commitments and contingencies
Shareholders' equity:    
Preferred stock, par value $.10 per share; 300,000 shares authorized; none issued
Capital in excess of par value 12,590,000 12,590,000
Retained earnings 156,337,000 152,861,000
Total shareholders' equity 170,393,000 166,917,000
Total Liabilities and Shareholders' Equity 185,336,000 179,313,000
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