Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 2,860	$ 1,181
Trade accounts receivable less allowances of $84 and $265, respectively	3,348	5,319
Retainage receivable	577	634
Inventories, net	2,510	2,581
Costs in excess of billings	145	99
Prepaid and other current assets	1,207	1,012
Assets held for sale	130
Total current assets	10,777	10,826
Property and equipment, net	536	1,800
Intangible assets, net	55	608
Collateralized assets	1,000	1,000
Other assets	440	119
Total assets	12,808	14,353
Current liabilities:
Accounts payable	3,707	5,879
Accrued liabilities	1,218	2,265
Deferred revenue	71	751
Billings in excess of costs	764	464
Credit line borrowings		1,590
Current maturities of long-term debt	59	756
Total current liabilities	5,819	11,705
Other liabilities	54	30
Long-term debt	4,011	1,793
Total liabilities	9,884	13,528
Preferred stock, par value $0.0001 per share:
Authorized: 2,000,000 shares in 2013 and 2012 Issued and outstanding: no shares in 2013 and 2012	0	0
Common stock, par value $0.0001 per share:
Authorized: 150,000,000 shares in 2013, and 100,000,000 shares in 2012 Issued and outstanding: 51,421,937 in 2013 and 44,698,650 in 2012	5	4
Additional paid-in capital	85,442	80,985
Accumulated other comprehensive income	462	460
Accumulated deficit	(82,985)	(80,624)
Total shareholders' equity	2,924	825
Total liabilities and shareholders' equity	$ 12,808	$ 14,353