Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 1,733	$ 2,136
Trade accounts receivable less allowances of $462 and $447, respectively	3,601	2,738
Retainage receivable	516	474
Inventories, net	2,452	2,429
Costs in excess of billings	74	171
Prepaid and other current assets	1,621	881
Total current assets	9,997	8,829
Property and equipment, net	1,968	2,105
Goodwill	672	672
Intangible assets, net	923	1,027
Collateralized assets	1,000	1,000
Other assets	119	145
Total assets	14,679	13,778
Current liabilities:
Accounts payable	4,123	5,653
Accrued liabilities	1,409	1,995
Deferred revenue	1,170	1,373
Billings in excess of costs	572	154
Credit line borrowings	1,304	701
Current maturities of long-term debt	50	855
Total current liabilities	8,628	10,731
Other liabilities	89	71
Acquisition-related contingent liabilities	482	553
Long-term debt	966	955
Total liabilities	10,165	12,310
SHAREHOLDERS' EQUITY
Preferred stock, par value $0.0001 per share: Authorized: 2,000,000 shares in 2012 and 2011 Issued and outstanding: no shares in 2012 and 2011
Common stock, par value $0.0001 per share: Authorized: 60,000,000 shares in 2012 and 2011 Issued and outstanding: 44,513,000 at March 31, 2012 and 24,913,000 at December 31, 2011	4	1
Additional paid-in capital	80,844	75,962
Accumulated other comprehensive income	448	420
Accumulated deficit	(76,782)	(74,915)
Total shareholders' equity	4,514	1,468
Total liabilities and shareholders' equity	$ 14,679	$ 13,778