Note 12 - Segments and Geographic Information (Detail) - Reportable Segment Data (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales	$ 29,837	$ 25,752	$ 35,129
Cost of sales	23,600	20,581	28,726
Gross profit	6,237	5,171	6,403
Research and development	368	(515)	(202)
Sales and marketing	5,696	6,200	6,415
General and administrative	4,646	5,062	6,115
Loss on impairment	672		156
Restructuring			26
Total operating expenses	11,280	10,392	14,322
Reconciliation of segment (loss) income to net loss:
Valuation of equity instruments		(56)	(1,812)
Change in estimate of contingent liabilities	102	411
Net income (loss) from continuing operations	(5,709)	(6,057)	(8,511)
Benefit from (Provision for) income taxes		2	(6)
Net loss	(5,709)	(6,055)	(8,517)
Solutions Segment [Member]
Net sales	10,569	9,563	19,763
Cost of sales	9,150	8,041	16,332
Gross profit	1,419	1,522	3,431
Sales and marketing	1,312	1,332	1,407
General and administrative	769	939	1,377
Loss on impairment	672
Total operating expenses	2,753	2,271	2,784
Reconciliation of segment (loss) income to net loss:
Net income (loss) from continuing operations	(1,334)	(749)	647
Products Segment [Member]
Net sales	19,268	16,189	15,366
Cost of sales	14,450	12,540	12,394
Gross profit	4,818	3,649	2,972
Research and development	368	(515)	(202)
Sales and marketing	3,641	4,629	4,796
General and administrative	261	318	293
Loss on impairment			156
Restructuring			26
Total operating expenses	4,270	4,432	5,069
Reconciliation of segment (loss) income to net loss:
Net income (loss) from continuing operations	548	(783)	(2,097)
Segments Total [Member]
Reconciliation of segment (loss) income to net loss:
Net income (loss) from continuing operations	(786)	(1,532)	(1,450)
Overhead [Member]
Sales and marketing	743	239	212
General and administrative	3,616	3,805	4,445
Total operating expenses	4,257	3,689	6,469
Reconciliation of segment (loss) income to net loss:
Valuation of equity instruments		56	1,812
Change in estimate of contingent liabilities	(102)	(411)
Other expense	$ (666)	$ (836)	$ (592)