CONSOLIDATED BALANCE SHEETS (USD $)	Sep. 30, 2012	Sep. 30, 2011
Current assets
Cash and cash equivalents	$ 42,977,501	$ 42,625,854
Accounts receivable, net	3,978,512	3,124,114
Inventories	3,801,547	3,508,595
Deferred income taxes	1,588,162	438,635
Prepaid expenses and other current assets	2,031,644	875,636
Total current assets	54,377,366	50,572,834
Property and equipment, net	7,214,378	7,476,362
Non-current deferred income taxes	846,887
Other assets	158,600	208,408
Total assets	62,597,231	58,257,604
Current liabilities
Current portion of capitalized lease obligations		13,189
Accounts payable	1,139,464	443,516
Accrued expenses	2,723,812	2,551,389
Deferred revenue	1,426,552	232,630
Total current liabilities	5,289,828	3,240,724
Non-current deferred income taxes	128,998	566,963
Other liabilities	98,002	189,130
Total liabilities	5,516,828	3,996,817
Commitments and contingencies (See Note 13)
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 September 30, 2012 and 2011
Common stock, $.001 par value: 75,000,000 shares authorized, 18,329,314 and 18,286,884 issued at September 30, 2012 and 2011, respectively	18,329	18,287
Additional paid-in capital	47,845,732	47,206,690
Retained earnings	29,605,236	26,626,242
Treasury stock, at cost, 1,756,632 and 1,544,910 shares at September 30, 2012 and 2011, respectively	(20,388,894)	(19,590,432)
Total Shareholders' Equity	57,080,403	54,260,787
Total liabilities and shareholders' equity	$ 62,597,231	$ 58,257,604