Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents, includes restricted cash of $135 and $252, respectively	$ 452	$ 1,181
Trade accounts receivable less allowances of $189 and $265, respectively	3,864	5,319
Retainage receivable	673	634
Inventories, net	3,113	2,581
Costs in excess of billings	97	99
Prepaid and other current assets	1,069	1,012
Total current assets	9,268	10,826
Property and equipment, net	1,763	1,800
Intangible assets, net	545	608
Collateralized assets	1,000	1,000
Other assets	119	119
Total assets	12,695	14,353
Current liabilities:
Accounts payable	5,430	5,879
Accrued liabilities	1,835	2,265
Deferred revenue	300	751
Billings in excess of costs	187	464
Credit line borrowings	1,212	1,590
Current maturities of long-term debt	780	756
Total current liabilities	9,744	11,705
Other liabilities	18	30
Long-term debt	3,528	1,793
Total liabilities	13,290	13,528
SHAREHOLDERS' EQUITY
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
Common stock, par value $0.0001 per share: Authorized: 100,000,000 shares in 2013 and 2012 Issued and outstanding: 44,698,650 at March 31, 2013 and December 31, 2012	4	4
Additional paid-in capital	81,031	80,985
Accumulated other comprehensive income	422	460
Accumulated deficit	(82,052)	(80,624)
Total shareholders' equity	(595)	825
Total liabilities and shareholders' equity	$ 12,695	$ 14,353