Condensed Consolidated Statements Of Cash Flows (USD $)	6 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Operating Activities:
Net income	$ 22,058	$ 5,348,895
Less: Net income from discontinued operations (Note 16)		81,625
(Loss) income from continuing operations	22,058	5,267,270
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
Depreciation and amortization	45,011	83,992
Provision for doubtful accounts		(24,000)
Warranty provision	(40,007)	106,258
Inventory obsolescence	(98,686)	18,861
Share-based compensation	277,470	210,670
Loss on impairment of patents	11,197	20,433
Changes in operating assets and liabilities:
Restricted cash	(39,406)	(3,031,250)
Accounts receivable	2,964,885	1,797,555
Inventories	(358,497)	(513,522)
Prepaid expenses and other	72,530	(593,651)
Prepaid expenses - noncurrent	62,390	(1,312,500)
Accounts payable	(602,704)	(106,583)
Warranty settlements	(15,014)	(21,327)
Accrued liabilities	(2,261,030)	(439,871)
Net provided by operating activities of continuing operations	40,197	1,462,335
Net cash (used in) provided by operating activities of discontinued operations (Note 16)	(3,013)	79,037
Net cash provided by operating activities	37,184	1,541,372
Investing Activities:
Purchase of equipment	(22,342)	(21,859)
Patent costs paid	(832)	(761)
Net cash used in investing activities	(23,174)	(22,620)
Financing Activities:
Proceeds from exercise of common stock warrants		4,346,613
Proceeds from exercise of stock options		109,910
Net cash provided by financing activities		4,456,523
Net increase in cash and cash equivalents	14,010	5,975,275
Cash and cash equivalents, beginning of period	13,870,762	5,421,167
Cash and cash equivalents, end of period	13,884,772	11,396,442
Supplemental Disclosure of Cash Flow Information
Cash paid for taxes	$ 60,015	$ 209,550

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits are not generally reported as cash and cash equivalents. Includes cash and cash equivalents associated with the entity's continuing operations. Excludes cash and cash equivalents associated with the disposal group (and discontinued operation).