Note 9 - Industry Segments (Details) - Industry Segments – Operating Information (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Revenue	$ 3,787	$ 4,574	$ 11,151	$ 12,826
Operating income (loss)	(35)	434	(1,054)	684
Corporate expenses	709	567	2,293	1,879
Capital expenditures	86	36	216	339
Depreciation and amortization	119	123	304	343
Information Technology [Member]
Segment Reporting Information [Line Items]
Revenue	1,109	1,088	3,184	3,106
Operating income (loss)	(412)	(182)	(1,379)	(885)
Capital expenditures	55	70	113	152
Depreciation and amortization	43	(1)	136	98
Industrial Products [Member]
Segment Reporting Information [Line Items]
Revenue	2,678	3,486	7,967	9,720
Operating income (loss)	672	882	1,363	2,622
Capital expenditures	43	36	80	237
Depreciation and amortization	64	53	186	185
Operating Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	260	700	(16)	1,737
Capital expenditures	86	35	216	335
Depreciation and amortization	119	123	299	337
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Corporate expenses	(295)	(266)	(1,038)	(1,053)
Capital expenditures		1		4
Depreciation and amortization			$ 5	$ 6