Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 6,737	$ 2,860
Trade accounts receivable less allowances of $51 and $84, respectively	3,843	3,348
Retainage receivable	201	577
Inventories, net	3,633	2,510
Costs and estimated earnings in excess of billings on uncompleted contracts		145
Prepaid and other current assets	1,340	1,207
Assets held for sale		130
Total current assets	15,754	10,777
Property and equipment, net	542	536
Intangible assets, net	14	55
Collateralized assets	1,000	1,000
Other assets	89	440
Total assets	17,399	12,808
Current liabilities:
Accounts payable	4,988	3,707
Accrued liabilities	892	1,218
Deferred revenue	113	71
Billings in excess of costs and estimated earnings on uncompleted contracts	46	764
Credit line borrowings	736
Current maturities of long-term debt	64	59
Total current liabilities	6,839	5,819
Other liabilities	4	54
Long-term debt	185	4,011
Total liabilities	7,028	9,884
Preferred stock, par value $0.0001 per share:
Issued and outstanding: no shares in 2014 and 2013	0	0
Common stock, par value $0.0001 per share:Authorized: 15,000,000 shares in 2014 and 2013. Issued and outstanding: 9,416,050 at September 30, 2014 and 5,142,194 at December 31, 2013 (post-reverse split)	1	1
Additional paid-in capital	97,985	85,446
Accumulated other comprehensive income	465	462
Accumulated deficit	(88,080)	(82,985)
Total stockholders' equity	10,371	2,924
Total liabilities and stockholders' equity	$ 17,399	$ 12,808