Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents, includes restricted cash of $59 and $252, respectively	$ 2,266	$ 1,181
Trade accounts receivable less allowances of $158 and $265, respectively	4,133	5,319
Retainage receivable	190	634
Inventories, net	2,383	2,581
Costs in excess of billings	127	99
Prepaid and other current assets	1,279	1,012
Total current assets	10,378	10,826
Property and equipment, net	1,624	1,800
Intangible assets, net	156	608
Collateralized assets	1,000	1,000
Other assets	135	119
Total assets	13,293	14,353
Current liabilities:
Accounts payable	3,826	5,879
Accrued liabilities	1,603	2,265
Deferred revenue	226	751
Billings in excess of costs	319	464
Credit line borrowings	1,602	1,590
Current maturities of long-term debt	305	756
Total current liabilities	7,881	11,705
Other liabilities	58	30
Long-term debt	4,065	1,793
Total liabilities	12,004	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: 49,158,886 at June 30, 2013 and 44,698,650 at December 31, 2012	5	4
Additional paid-in capital	83,594	80,985
Accumulated other comprehensive income	421	460
Accumulated deficit	(82,731)	(80,624)
Total shareholders' equity	1,289	825
Total liabilities and shareholders' equity	$ 13,293	$ 14,353