Note 8 - Industry Segments (Details) - Industry Segments - Asset Information (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 10,319	$ 10,627
Information Technology [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	1,569	1,725
Industrial Products [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	6,667	6,716
Operating Segments [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	8,236	8,441
Corporate Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 2,083	$ 2,186