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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013
Operating Activities: |  |
Net income | $ 3,327,088 | $ 1,262,812
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 209,975 | 146,307
Provision for doubtful accounts | (3,772) | (600)
Warranty provision | 157,819 | 19,254
Inventory obsolescence | 36,967 | (143,686)
Share-based compensation | 585,753 | 736,378
Loss on sale or impairment of patents | 6,980 | 86,445
Changes in operating assets and liabilities: |  |
Accounts receivable | 678,253 | 559,962
Inventories | 655,047 | (1,331,575)
Prepaid expenses and other | 479,928 | (562,052)
Prepaid expenses and other - noncurrent | 148,093 | 187,500
Accounts payable | (765,906) | 600,690
Warranty settlements | (56,267) | (10,808)
Accrued and other liabilities | 2,942,897 | 205,072
Net cash provided by operating activities | 8,402,855 | 1,755,699
Investing Activities: |  |
Capital expenditures | (326,957) | (147,504)
Patent costs paid | (14,890) | (2,955)
Net cash used in investing activities | (341,847) | (150,459)
Financing Activities: |  |
Repurchase of common stock | (516,352) |
Proceeds from exercise of stock options | 544,893 | 340,450
Net cash provided by financing activities | 28,541 | 340,450
Net increase in cash | 8,089,549 | 1,945,690
Cash, beginning of period | 15,805,195 | 13,859,505
Cash, end of period | 23,894,744 | 15,805,195
Supplemental Disclosure of Cash Flow Information |  |
Cash paid (refunded) for taxes | $ 14,445 | $ (38,662)

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