Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets
Cash and cash equivalents	$ 10,896	$ 5,375
Accounts receivable, net	577	24
Inventory	79	49
Other current assets	458	336
Total current assets	12,010	5,784
Property and equipment, net	842	1,065
Restricted cash	435	435
Intangible assets	1,046	1,145
Other assets	18	18
Total assets	14,351	8,447
Current liabilities
Accounts payable	1,660	1,610
Accrued liabilities	2,361	2,455
Billings in excess of costs and estimated earnings on uncompleted contracts	103	680
Warrant liability	0	4,902
Current portion of capital lease obligations	0	15
Total current liabilities	4,124	9,662
Deferred rent, net of current portion	523	481
Total liabilities	4,647	10,143
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; 44,444 and 32,069 shares issued and outstanding	44	32
Additional paid-in capital	475,143	448,981
Accumulated deficit	(465,483)	(450,709)
Total shareholders' equity (deficit)	9,704	(1,696)
Total liabilities and shareholders' equity	$ 14,351	$ 8,447