Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities:
Net loss	$ (5,002)	$ (4,964)
Adjustments to reconcile net loss to net cash used in operating activites:
Stock-based compensation	1,303	483
Stock option modification expense		398
Stock issued as employee compensation	0	76
Stock issued for consulting fees	0	165
Warrant expense	0	1,492
Change in fair value of warrant liability	0	242
Depreciation	51	133
Provision for uncollectible accounts receivable	269	254
Gain on sale of discontinued operations	(677)	0
Loss on sale of equipment	0	(6)
Impairment on loss of equipment	30	0
Gain on the settlement of accounts payable	0	(63)
Changes in operating assets and liabilities:
Accounts receivable	14	(411)
Other current assets	(135)	220
Deposits and other assets	4	58
Accounts payable	2	(40)
Accrued liabilities	(2)	(169)
Liabilities of discontinued operations	0	(24)
Net Cash Used In Operating Activities	(4,143)	(2,144)
Cash Flows From Investing Activities:
Purchase of short term investments	0	(2,866)
Purchase of capital equipment	(7)	0
Proceeds from the sale of equipment	0	1
Net Cash Used In Investing Activities	(7)	(2,865)
Cash Flows From Financing Activities:
Proceeds from issuance of common stock for stock option exercises	94	8
Proceeds from issuance of common stock for warrant exercises	1,955	0
Proceeds from issuance of common stock , net offering costs $296	0	6,961
Net Cash Provided By Financing Activities	2,049	6,969
Net increase (decrease) in cash	(2,101)	1,960
Cash at beginning of period	6,678	2,649
Cash and cash equivalents at end of period	4,577	4,608
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for taxes	$ 0	$ 0