Annual report pursuant to Section 13 and 15(d)

Statements Of Cash Flows

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Statements Of Cash Flows (USD $)
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Net income $ 7,701,194 $ 6,167,446
Adjustments to reconcile net income to cash provided by operating activities:    
Depreciation and amortization 404,765 358,502
Deferred income taxes (3,436,931) (2,407,435)
Gain on sale of assets 23,645 (44,173)
Stock-based compensation expense 470,710 535,347
Changes in operating assets and liabilities:    
Accounts receivable, net 206,228 15,515
Inventories (212,854) (1,244,845)
Other current assets (307,410) (41,164)
Accounts payable and accrued expenses (1,023,016) 1,958,026
Net cash provided by operating activities 3,826,331 5,297,219
Cash flows from investing activities:    
Purchases of property and equipment (550,618) (745,790)
Purchase of investments (11,942,000) (1,886,659)
Proceeds from sale of property and equipment   718,537
Patent additions (40,423)  
Sale of investments 2,819,000 2,331,690
Net cash provided by (used in) investing activities (9,714,041) 417,778
Cash flows from financing activities:    
Proceeds from issuance of common stock under employee stock purchase plan 142,542 87,667
Proceeds from issuance of common stock 142,284 180,166
Excess tax benefit from exercise of stock options   12,478
Net cash provided by financing activities 284,826 280,311
Increase (decrease) in cash and cash equivalents (5,602,884) 5,995,308
Cash and cash equivalents at beginning of year 11,281,027 5,285,719
Cash and cash equivalents at end of year 5,678,143 11,281,027
Supplemental cash flow information: Cash paid during the year for:    
Income Taxes $ 163,756 $ 48,263