Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 505,695	$ (236,289)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Accretion of premiums and discounts on marketable securities	(9,676)	5,414
Share-based compensation	571,621	488,031
Depreciation and amortization	217,299	198,383
Loss on change in fair value of warrants	3,064,370	356,290
Gain on sale of assets	(750,000)
Deferred revenues recognized	(205,133)	(370,195)
Changes in other assets and liabilities impacting cash flows from operations:
Accounts receivable	1,154,420	702,379
Inventory	(820,473)	(94,146)
Prepaid and other assets	224,525	400,767
Accounts payable, accrued compensation and other accrued expenses	(266,242)	(368,387)
Other liabilities	(14,741)	(28,667)
NET CASH PROVIDED BY OPERATING ACTIVITIES	3,671,665	1,053,580
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of marketable securities	(1,499,337)	(3,000,000)
Proceeds from maturities and sales of marketable securities	8,865,000	110,000
Proceeds from sale of assets	750,000
Restricted cash	(553)	(218)
Purchases of property, plant and equipment	(210,202)	(86,562)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	7,904,908	(2,976,780)
CASH FLOWS FROM FINANCING ACTIVITIES
Stock option exercises	515,689	21,643
Settlements of restricted stock for tax withholding obligations	(233,757)	(42,490)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	281,932	(20,847)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	11,858,505	(1,944,047)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	8,884,402	7,613,378
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 20,742,907	$ 5,669,331

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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 should not be reported as cash and cash equivalents.

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The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes.

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The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (trading, held-to-maturity, or available-for-sale) during the period.

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

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock options, amortization of restricted stock, 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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