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CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)
Dec. 31, 2011
Sep. 30, 2011
Current Assets    
Cash and cash equivalents $ 42,783,639 $ 42,625,854
Accounts receivable, net 2,560,402 3,124,114
Inventories 4,143,521 3,508,595
Deferred income taxes 435,872 438,635
Prepaid expenses and other current assets 980,836 875,636
Total current assets 50,904,270 50,572,834
Property and equipment, net 7,463,211 7,476,362
Other assets 166,400 208,408
Total Assets 58,533,881 58,257,604
Current Liabilities    
Current portion of capitalized lease obligations 9,980 13,189
Accounts payable 1,027,020 443,516
Accrued expenses 2,238,621 2,551,389
Deferred revenue 917,920 232,630
Total current liabilities 4,193,541 3,240,724
Deferred income taxes 564,367 566,963
Other liabilities 68,004 189,130
Total Liabilities 4,825,912 3,996,817
Commitments and contingencies (See Note 6)      
Shareholders' Equity    
Preferred Stock, 10,000,000 shares authorized, $.001 par value, of which 200,000 shares are authorized as Class A Convertible stock. No shares issued and outstanding at December 31, 2011 and September 30, 2011      
Common stock, $.001 par value: 75,000,000 shares authorized, 18,297,734 and 18,286,884 issued at December 31, 2011 and September 30, 2011, respectively 18,298 18,287
Additional paid-in capital 47,345,531 47,206,690
Retained earnings 26,283,263 26,626,242
Treasury stock, at cost, 1,633,426 and 1,544,910 shares at December 31, 2011 and September 30, 2011, respectively (19,939,123) (19,590,432)
Total Shareholders' Equity 53,707,969 54,260,787
Total Liabilities and Shareholders' Equity $ 58,533,881 $ 58,257,604