Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 5,375	$ 6,850
Accounts receivable, net of allowance of $373 and $332	24	1,115
Costs and estimated earnings in excess of billings on uncompleted contracts	0	12
Inventory	49	497
Other current assets	336	1,221
Total current assets	5,784	9,695
Property and equipment, net	1,065	1,205
Restricted cash	435	436
Intangible assets	1,145	1,580
Other assets	18	22
Total assets	8,447	12,938
Current liabilities
Accounts payable	1,610	3,035
Accrued liabilities	2,455	4,007
Deferred revenue	0	609
Billings in excess of costs and estimated earnings on uncompleted contracts	680	98
Warrant liability	4,902	0
Current portion of capital lease obligations	15	48
Current portion of long-term debt	0	67
Total current liabilities	9,662	7,864
Capital lease obligations, net of current portion	0	20
Deferred rent, net of current portion	481	0
Total liabilities	10,143	7,884
Commitments and contingencies (Note 11)
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; 32,069 and 25,237 shares issued and outstanding at December 31, 2013 and 2012, respectively	32	25
Additional paid-in capital	448,981	442,560
Accumulated deficit	(450,709)	(437,531)
Total shareholders' equity (deficit)	(1,696)	5,054
Total liabilities and shareholders' equity	$ 8,447	$ 12,938