Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 8,321	$ 6,850
Accounts receivable, net of allowance of $347 and $332	137	1,115
Costs and estimated earnings in excess of billings on uncompleted contracts	12	12
Inventory	28	497
Other current assets	420	1,221
Total current assets	8,918	9,695
Property and equipment, net	1,182	1,205
Restricted cash	435	436
Intangible assets	1,462	1,580
Other assets	18	22
Total assets	12,015	12,938
Current liabilities
Accounts payable	1,809	3,035
Accrued liabilities	3,014	4,007
Deferred revenue	0	609
Billings in excess of costs and estimated earnings on uncompleted contracts	209	98
Warrant liability	6,716	0
Current portion of capital lease obligations	29	48
Current portion of long-term debt	0	67
Total current liabilities	11,777	7,864
Capital lease obligations, net of current portion	0	20
Deferred rent, net of current portion	428	0
Total liabilities	12,205	7,884
Commitments and contingencies (Note 6)
Shareholders equity
Preferred stock, par value $.001; 25,000 shares authorized; 0 and 0 shares issued and outstanding	0	0
Common stock, par value $.001; 100,000 shares authorized; 31,653 and 25,237 shares issued and outstanding	32	25
Additional paid-in capital	448,066	442,560
Accumulated deficit	(448,288)	(437,531)
Total shareholders' equity (deficit)	(190)	5,054
Total liabilities and shareholders' equity	$ 12,015	$ 12,938