Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows From Operating Activities:
Net loss	$ (4,725)	$ (3,072)
Adjustments to reconcile net loss to net cash used in operating activites:
Stock-based compensation	864	908
Depreciation	23	39
Provision for uncollectible accounts receivable	0	165
Loss on sale of equipment	58	0
Impairment on loss of equipment	0	30
Gain on sale of discontinued operations	0	(677)
Changes in operating assets and liabilities:
Accounts receivable	0	(5)
Prepaid expenses and other current assets	629	(78)
Deposits and other assets	22	11
Accounts payable	(182)	(110)
Accrued liabilities	16	88
Net Cash Used In Operating Activities	(3,295)	(2,701)
Cash Flows From Investing Activities:
Purchase of property and equipment	(13)	0
Net Cash Used In Investing Activities	(13)	0
Cash Flows From Financing Activities:
Proceeds from issuance of common stock for stock option exercises	231	94
Proceeds from issuance of common stock for warrant exercises	0	1,861
Net Cash Provided By Financing Activities	231	1,955
Net increase(decrease) in cash	(3,077)	(746)
Cash at beginning of period	9,954	6,678
Cash at end of period	6,877	5,932
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for taxes	$ 0	$ 0