Condensed Statements of Cash Flows (USD $) In Thousands	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net loss	$ (7,553)	$ (5,750)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss from discontinued operations	283	47
Depreciation and amortization	137	178
Amortization of debt discount	64
Stock-based compensation	1,097	1,386
Changes in operating assets and liabilities:
Accounts receivable	110	(157)
Prepaid expenses and other assets	(96)	338
Accounts payable	274	(5)
Accrued expenses	710	(524)
Deferred revenue	(272)	(76)
Net cash used in continuing operating activities	(5,246)	(4,563)
Net cash provided by discontinued operations
Net cash used in operating activities	(5,246)	(4,563)
Cash flows from investing activities:
Purchases of property and equipment	(126)	(75)
Net cash used in investing activities	(126)	(75)
Cash flows from financing activities:
Proceeds from sale of units of common stock and warrants, net of issuance costs	22,772
Proceeds from convertible note financing	1,500
Proceeds from the exercise of stock options		42
Proceeds from the issuance of shares under the Employee Stock Purchase Plan	10	18
Net cash provided by financing activities	24,282	60
Net increase (decrease) in cash and cash equivalents	18,910	(4,578)
Cash and cash equivalents, beginning of period	2,109	7,593
Cash and cash equivalents, end of period	$ 21,019	$ 3,015

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The component of interest expense representing the noncash expenses charged against earnings in the period to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate caption: Noncash Interest Expense.

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