Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Operating Activities:
Net income (loss)	$ 313,946	$ (355,367)
Less: Net income from discontinued operations (Note 16)		81,520
Income (loss) from continuing operations	313,946	(436,887)
Adjustments to reconcile net income to net cash provided by operating activities of continuing operations:
Depreciation and amortization	22,776	48,304
Provision for doubtful accounts		56,000
Warranty provision	64,310	(14,947)
Inventory obsolescence	162,602	(38,743)
Share-based compensation	139,286	113,303
Loss on impairment of patents	10,616	1,748
Changes in operating assets and liabilities:
Restricted cash		(3,031,250)
Accounts receivable	2,358,304	2,204,760
Inventories	(373,174)	(2,968,193)
Prepaid expenses and other	107,450	(10,978)
Prepaid expenses - noncurrent	15,515
Accounts payable	(443,881)	1,268,445
Warranty settlements	(13,095)	(15,838)
Accrued liabilities	(2,383,183)	822,846
Net cash used in operating activities of continuing operations	(18,528)	(2,001,430)
Net cash used in (provided by) operating activities of discontinued operations (Note 16)	(3,013)	100,718
Net cash used in operating activities	(21,541)	(1,900,712)
Investing Activities:
Purchase of equipment	(3,617)	(6,958)
Patent costs paid	(227)	(55)
Net cash used in investing activities	(3,844)	(7,013)
Financing Activities:
Proceeds from exercise of stock options		94,841
Net cash provided by financing activities		94,841
Net decrease in cash and cash equivalents	(25,385)	(1,812,884)
Cash and cash equivalents, beginning of period	13,870,762	5,421,167
Cash and cash equivalents, end of period	13,845,377	3,608,283
Supplemental Disclosure of Cash Flow Information
Cash paid for taxes	$ 50,000	$ 108,000

Name:	us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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).