Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows From Operating Activities:
Net loss	$ (3,072)	$ (3,866)
Adjustments to reconcile net loss to net cash used in operating activites:
Stock-based compensation	908	427
Stock option modification expense	0	398
Stock issued as employee compensation	0	76
Stock issued for consulting fees	0	58
Warrant expense	0	1,492
Change in fair value of warrant liability	0	78
Depreciation	39	101
Provision for uncollectible accounts receivable	165	188
Gain on the sale of discontinued operations	(677)	0
Gain 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	(5)	(295)
Other current assets	(78)	268
Deposits and other assets	11	50
Assets of discontinued operations	0	6
Accounts payable	(110)	54
Accrued liabilities	88	(187)
Liabilities of discontinued operations	0	(24)
Net Cash Used In Operating Activities	(2,701)	(1,233)
Cash Flows From Investing Activities:
Proceeds from the sale of equipment	0	1
Net Cash Provided By Investing Activities	0	1
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	1,861	0
Proceeds from issuance of common stock, net offering costs $296	0	6,961
Net Cash Provided By Financing Activities	1,955	6,969
Net increase (decrease) in cash	(746)	5,737
Cash at beginning of period	6,678	2,649
Cash at end of period	5,932	8,386
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for taxes	$ 0	$ 0