Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Stockholders' equity:    
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 1,582,334 1,582,334
Common stock, shares outstanding 1,582,334 1,582,334
Treasury stock, shares 534,520 534,520
Intangible assets, net of accumulated amortization $ 2,500 $ 2,200
Property and equipment, net of accumulated depreciation 21,800 20,600
Inventories, net of reserves 1,900 1,800
Trade receivables, net of allowance for doubtful account $ 61 $ 61
Series B Convertible Preferred Stock    
Stockholders' equity:    
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, issued 315,790 315,790
Preferred stock, outstanding 315,790 315,790
Series E Convertible Preferred Stock    
Stockholders' equity:    
Preferred stock, shares authorized 200,000 200,000
Preferred stock, issued 47,840 47,840
Preferred stock, outstanding 47,840 47,840
Preferred stock, liquidation preference per share $ 0.30 $ 0.30
Treasury stock, shares 50,000 50,000