Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (10,681,088)	$ (1,370,076)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	504,073	541,085
Amortization of deferred compensation	3,566	3,566
Stock compensation expense	220,806	224,529
Deferred income taxes	2,155,710	(370,000)
Change in assets and liabilities:
Accounts receivable, net	2,313,813	233,956
Inventories	47,277	1,206,724
Recoverable income taxes	55,477	(272,251)
Prepaid expenses and other current assets	(116,305)	(145,046)
Other assets	(135,776)	30,965
Accounts payable	(118,387)	(669,144)
Accrued compensation and employee benefits	74,205	(523,100)
Accrued expenses	47,460	(104,424)
Accrued patent litigation expense	5,056,518	0
Unearned revenue	(272,294)	(5,702)
Income taxes payable	0	(122,946)
Other liabilities	110,972	(151,050)
Net cash provided by (used in)	(733,973)	(1,492,914)
Cash flows from investing activities:
Increase (Decrease) in Trading Securities	92,075	5,038,517
Payments to Acquire Property, Plant, and Equipment	311,364	262,149
Net Cash Provided by (Used in) Investing Activities	(403,439)	(5,300,666)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Payments for Repurchase of Common Stock	215,269	834,523
Proceeds from Stock Options Exercised	159,949	49,511
Net Cash Provided by (Used in) Financing Activities	(55,320)	(785,012)
Effect of Exchange Rate on Cash and Cash Equivalents	71,720	(59,076)
Cash and Cash Equivalents, Period Increase (Decrease)	(1,121,012)	(7,637,668)
Cash at beginning of year	8,789,967	16,650,191
Cash at end of period	$ 7,668,955	$ 9,012,523

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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).