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Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) | 9 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013
Net income (loss) | $ 2,600,304 | $ (1,668,164)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Depreciation and amortization | 147,534 | 106,485
Provision for doubtful accounts | 5,716 | (400)
Warranty provision | 147,887 | (834)
Inventory obsolescence | 19,032 | (219,419)
Share-based compensation | 488,958 | 582,058
Loss on sale or impairment of patents | 6,980 | 5,138
Changes in operating assets and liabilities: |  |
Accounts receivable | 1,204,313 | 4,351,696
Inventories | (163,281) | (1,913,407)
Prepaid expenses and other | 454,185 | (24,674)
Prepaid expenses and other - noncurrent | 140,625 | 140,625
Accounts payable | (944,129) | (86,671)
Warranty settlements | (40,975) | (11,585)
Accrued and other liabilities | 1,860,328 | (30,927)
Net cash provided by operating activities | 5,927,477 | 1,229,921
Capital expenditures | (242,483) | (134,349)
Patent costs paid | (6,348) | (2,734)
Net cash used in investing activities | (248,831) | (137,083)
Repurchase of common stock | (476,494) |
Proceeds from exercise of stock options | 193,064 | 105,228
Net cash (used in) provided by financing activities | (283,430) | 105,228
Net increase in cash | 5,395,216 | 1,198,066
Cash, beginning of period | 15,805,195 | 13,859,505
Cash, end of period | 21,200,411 | 15,057,571
Supplemental Disclosure of Cash Flow Information |  |
Cash paid (refunded) for taxes | $ 325 | $ (38,724)

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