Note 8 - Industry Segments (Details) - Industry Segments - Asset Information (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 9,947	$ 10,627
Information Technology [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,799	1,725
Industrial Products [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	5,868	6,716
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	7,667	8,441
Corporate Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,280	$ 2,186