Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Cash and cash equivalents	$ 10,743	$ 13,075
Accounts receivable, net of allowances of $332 and $243	979	463
Costs and estimated earnings in excess of billings on uncompleted contracts	12	70
Inventory	622	4,254
Other current assets	606	793
Total current assets	12,962	18,655
Property and equipment, net	1,465	2,347
Restricted cash	436	786
Intangible assets	1,910	2,048
Other assets	22	34
Total assets	16,795	23,870
Accounts payable	3,877	7,341
Accrued liabilities	4,087	5,113
Billings in excess of costs and estimated earnings on uncompleted contracts	86	156
Current portion of capital lease obligations	46	39
Current portion of long-term debt	91	93
Total current liabilities	8,187	12,742
Capital lease obligations, net of current portion	34	72
Long-term debt, net of current portion	0	67
Deferred rent, net of current portion	0	187
Total liabilities	8,221	13,068
Commitments and contingencies
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; 25,080 and 17,019 shares issued and outstanding	25	17
Additional paid-in capital	442,006	425,658
Accumulated other comprehensive loss	0	(35)
Accumulated deficit	(433,457)	(414,838)
Total shareholders' equity	8,574	10,802
Total liabilities and shareholders' equity	$ 16,795	$ 23,870