Note 15 - Industry Segments (Detail) - Industry Segments - Operating Information (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Revenue	$ 16,530	$ 16,324
Operating income (loss)	(164)	311
Depreciation and amortization	523	435
Capital expenditures	399	464
Identifiable assets	7,962	8,445
Information Technology [Member]
Revenue	3,721	4,338
Operating income (loss)	(1,725)	(918)
Depreciation and amortization	186	95
Capital expenditures	133	101
Identifiable assets	1,712	1,791
Industrial Products [Member]
Revenue	12,809	11,986
Operating income (loss)	2,945	2,252
Depreciation and amortization	324	325
Capital expenditures	261	362
Identifiable assets	6,250	6,654
Operating Segments [Member]
Operating income (loss)	1,220	1,334
Depreciation and amortization	510	420
Capital expenditures	394	463
Corporate [Member]
Corporate expenses	(1,384)	(1,023)
Depreciation and amortization	13	15
Capital expenditures	$ 5	$ 1