Note 10 - Segments and Geographic Information (Details) - Summary of Reportable Segment Data (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	$ 6,699	$ 5,653	$ 11,618	$ 10,111
Cost of sales	4,525	4,415	8,022	7,990
Gross profit	2,174	1,238	3,596	2,121
Operating expenses:
Research and development	203	172	394	209
Selling, genereal, and administrative	2,533	2,471	4,837	4,553
Loss on impairment		325		325
Total operating expenses	2,736	2,980	5,231	5,099
Reconciliation of segment income (loss) to net loss:
Change in estimate of contingent liabilities		12		12
Other (expense) income	(61)	580	(3,039)	360
Income (loss) before income taxes	(623)	(1,162)	(4,674)	(2,618)
Benefit (provision) for income taxes	1		2
Net loss from continuing operations	(622)	(1,162)	(4,672)	(2,618)
Solutions Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	1,133	1,983	3,321	3,790
Cost of sales	948	1,775	2,513	3,298
Gross profit	185	208	808	492
Operating expenses:
Selling, genereal, and administrative	352	476	783	948
Loss on impairment		325		325
Total operating expenses	352	801	783	1,273
Reconciliation of segment income (loss) to net loss:
Income (loss) before income taxes	(167)	(593)	25	(781)
Products Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	5,566	3,670	8,297	6,321
Cost of sales	3,577	2,640	5,509	4,692
Gross profit	1,989	1,030	2,788	1,629
Operating expenses:
Research and development	55	172	118	209
Selling, genereal, and administrative	1,223	1,025	2,018	1,609
Total operating expenses	1,278	1,197	2,136	1,818
Reconciliation of segment income (loss) to net loss:
Income (loss) before income taxes	711	(167)	652	(189)
Segements Total [Member]
Reconciliation of segment income (loss) to net loss:
Income (loss) before income taxes	544	(760)	677	(970)
Overhead [Member]
Operating expenses:
Research and development	148		276
Selling, genereal, and administrative	958	970	2,036	1,996
Total operating expenses	1,106	982	2,312	2,008
Reconciliation of segment income (loss) to net loss:
Change in estimate of contingent liabilities		$ 12		$ 12