Note 8 - Industry Segments (Details) - Industry Segments - Operating Information (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenue	$ 4,166	$ 4,032	$ 8,252	$ 8,126
Operating income (loss)	338	(238)	253	(491)
Depreciation and amortization	102	95	219	233
Capital expenditures	124	41	303	112
Corporate expenses	642	751	1,471	1,622
Information Technology [Member]
Segment Reporting Information [Line Items]
Revenue	1,181	705	2,018	1,411
Operating income (loss)	(194)	(583)	(703)	(1,223)
Depreciation and amortization	43	11	82	63
Capital expenditures	71	11	100	72
Industrial Products [Member]
Segment Reporting Information [Line Items]
Revenue	2,985	3,327	6,234	6,715
Operating income (loss)	853	685	1,740	1,519
Depreciation and amortization	56	81	131	164
Capital expenditures	50	30	200	40
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	4,166	4,032	8,252	8,126
Depreciation and amortization	99	92	213	227
Capital expenditures	121	41	300	112
Other Segments [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	659	102	1,037	296
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization	3	3	6	6
Capital expenditures	3		3
Corporate expenses	$ (321)	$ (340)	$ (784)	$ (787)