STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (5,120,084)	$ (5,025,182)
Income from discontinued operations	0	158,366
Loss from continuing operations	(5,120,084)	(5,183,548)
Adjustments to reconcile loss from continuing operations to net cash used in operating activities:
Depreciation and amortization	282,518	385,031
Stock-based compensation expense	191,828	227,091
Changes in operating assets and liabilities:
Accounts receivable from related party	(549,910)	11,995
Trade accounts receivable	8,332	(18,932)
Federal grant receivable	0	117,946
Inventory	(50,480)	10,091
Prepaid expenses and other current assets	(200,385)	48,962
Accounts payable	109,876	(140,341)
Accrued expenses	(16,852)	(260,658)
Deferred revenue	803,419	308,892
Net cash used in operating activities of discontinued operations	0	(5,873)
Net cash used in operating activities	(4,541,738)	(4,499,344)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital additions	(5,000)	(4,418)
Net cash provided by investing activities of discontinued operations	0	200,000
Net cash (used in) provided by investing activities	(5,000)	195,582
CASH FLOW FROM FINANCING ACTIVITIES:
Proceeds from issuance of convertible notes	1,316,255	2,000,000
Private placement of preferred stock	3,000,000	0
Private placement offering costs	(281,123)	0
Proceeds from employee stock purchase plan	8,810	32,955
Net cash provided by financing activities	4,043,942	2,032,955
Net decrease in cash and equivalents	(502,796)	(2,270,807)
Cash and cash equivalents, beginning of period	1,728,222	3,999,029
Cash and cash equivalents, end of period	1,225,426	1,728,222
Supplemental disclosures of cash flow information:
Cash paid for interest	436,754	357,500
Supplemental disclosures of non-cash investing and financing activities:
Warrants issued in connection with preferred stock financing	$ 104,907	$ 0