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Condensed Consolidated Balance Sheets - USD ($)
Sep. 30, 2025
Dec. 31, 2024
Current assets:    
Cash and cash equivalents $ 3,960,000 $ 4,208,000
Accounts receivable, less allowances of $7,000 445,000 421,000
Short-term investments (Note 2) 5,929,000 5,179,000
Inventories, less reserves for obsolescence of $5,161,000, and $5,152,000, respectively (Note 3) 2,098,000 2,949,000
Prepaid expenses and other current assets (Note 4) 227,000 308,000
Total current assets 12,659,000 13,065,000
Property and equipment, net 2,883,000 3,029,000
Deferred taxes 1,543,000 1,542,000
Total assets 17,085,000 17,636,000
Current liabilities:    
Accounts payable 492,000 251,000
Accrued liabilities 275,000 822,000
Accrued restructuring reserve 1,256,000 0
Total current liabilities 2,023,000 1,073,000
Commitments and contingencies (Note 6)
Shareholders’ equity:    
Preferred stock, $0.001 par value. Authorized 5,000,000 shares; None issued or outstanding 0 0
Additional paid-in capital 11,486,000 11,484,000
Accumulated other comprehensive loss (68,000) (49,000)
Retained earnings 3,638,000 5,122,000
Total equity 15,062,000 16,563,000
Total liabilities and equity 17,085,000 17,636,000
Class A Common Stock    
Shareholders’ equity:    
Common stock, value 5,000 5,000
Class B Common Stock    
Shareholders’ equity:    
Common stock, value $ 1,000 $ 1,000