Condensed Statements of Cash Flows (USD $)	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Operating activities
Net loss	$ (2,047,806)	$ (2,381,617)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation	548,838	509,036
Depreciation and amortization	302,319	403,418
Amortization of debt discount to interest expense	944,351
Interest expense related to premium for conversion of convertible note	89,387
Interest expense on convertible note settled with common stock	16,732
Deferred income tax expense	23,955	7,531
Changes in operating assets and liabilities:
Accounts receivable	(1,801,128)	206,162
Inventories	411,222	606,840
Prepaid expenses and other current assets	(64,065)	(66,162)
Other assets	60,388	29,369
Accounts payable	838,012	802,992
Accrued payroll and related expenses	53,636	(209,226)
Deferred income on shipments to distributors	497,119	(67,565)
Deferred service revenue	(74,101)	(19,421)
Change in deferred rent	(9,986)	10,978
Net cash used in operating activities	(211,127)	(167,665)
Investing activities
Purchases of equipment	(95,027)	(127,625)
Net cash used in investing activities	(95,027)	(127,625)
Financing activities
Payments on capital leases	(9,731)	(9,165)
Reduction in restricted cash requirement	710,797
Proceeds from borrowings under bank line of credit agreement		5,161,910
Repayments of borrowings under bank line of credit agreement		(5,375,969)
Stock options exercised	29,739	27,817
Warrants exercised	21,858
Net cash provided by (used in) financing activities	752,663	(195,407)
Net increase (decrease) in cash and cash equivalents	446,509	(490,697)
Cash and cash equivalents at beginning of period	460,833	1,940,295
Cash and cash equivalents at end of period	907,342	1,449,598
Supplemental cash flow information
Cash paid for interest	52,135	139,595
Issuance of common stock in exchange for forgiveness of accounts payable	499,998
Beneficial conversion feature associated with senior convertible note	273,904
Conversion of senior convertible note and accrued interest to common stock	$ 1,016,732

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The net cash inflow or outflow from financing activity for the period.

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The net cash inflow or outflow from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt and payment of capital lease obligations.

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The cash outflow to pay off an obligation from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with either short term or long term maturity.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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