Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash Flows From Operating Activities:
Net loss	$ (2,228)	$ (1,200)
Adjustments to reconcile net loss to net cash used in operating activites:
Stock-based compensation	457	508
Depreciation	11	20
Provision for uncollectible accounts receivable	0	8
Changes in operating assets and liabilities:
Accounts receivable	0	(43)
Prepaid expenses and other current assets	275	(67)
Deposits and other assets	22	10
Gain on discontinued operations	0	(677)
Accounts payable	(199)	(72)
Accrued liabilities	0	98
Net Cash Used In Operating Activities	(1,662)	(1,415)
Cash Flows From Investing Activities:
Purchase of property and equipment	(3)	0
Net Cash Used In Investing Activities	(3)	0
Cash Flows From Financing Activities:
Proceeds from issuance of common stock for stock option exercises	231	68
Proceeds from issuance of common stock for warrant exercises	0	1,471
Net Cash Provided By Financing Activities	231	1,539
Net increase(decrease) in cash	(1,434)	124
Cash at beginning of period	9,954	6,678
Cash at end of period	8,520	6,802
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for taxes	$ 0	$ 0