Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (4,921)	$ (1,419)
Adjustments to reconcile net loss to net cash used in operating activities:
Loss from discontinued operations	91	103
Depreciation and amortization	51	48
Stock-based compensation	778	239
Amortization of debt discount	40
Changes in operating assets and liabilities:
Accounts receivable		(151)
Prepaid expenses and other current assets	(40)	125
Accounts payable	198	150
Accrued expenses	(304)	(103)
Deferred revenue		(16)
Net cash used in operating activities	(4,107)	(1,024)
Cash flows from investing activities:
Purchases of property and equipment	(423)
Net cash used in investing activities	(423)
Net decrease in cash and cash equivalents	(4,530)	(1,024)
Cash and cash equivalents, beginning of period	17,974	2,109
Cash and cash equivalents, end of period	$ 13,444	$ 1,085

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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.