Note 15 - Industry Segments (Details) - Industry Segments – Operating Information (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Revenue	$ 14,586,000us-gaap_Revenues	$ 16,318,000us-gaap_Revenues
Operating income (loss)	(1,181,000)us-gaap_OperatingIncomeLoss	444,000us-gaap_OperatingIncomeLoss
Corporate expenses	2,914,000us-gaap_GeneralAndAdministrativeExpense	2,680,000us-gaap_GeneralAndAdministrativeExpense
Depreciation and amortization	398,000us-gaap_DepreciationAndAmortization	435,000us-gaap_DepreciationAndAmortization
Capital expenditures	277,000	559,000
Identifiable assets	9,205,000us-gaap_Assets	10,627,000us-gaap_Assets
Information Technology [Member]
Segment Reporting Information [Line Items]
Revenue	4,188,000	4,202,000
Operating income (loss)	(1,879,000)	(1,290,000)
Depreciation and amortization	150,000	189,000
Capital expenditures	190,000	174,000
Identifiable assets	1,621,000	1,725,000
Industrial Products [Member]
Segment Reporting Information [Line Items]
Revenue	10,398,000	12,116,000
Operating income (loss)	2,021,000	3,074,000
Depreciation and amortization	243,000	240,000
Capital expenditures	87,000	380,000
Identifiable assets	5,357,000	6,716,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue	14,586,000	16,318,000
Operating income (loss)	142,000	1,784,000
Depreciation and amortization	393,000	429,000
Capital expenditures	277,000	554,000
Identifiable assets	6,978,000	8,441,000
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Corporate expenses	(1,323,000)	(1,340,000)
Depreciation and amortization	5,000	6,000
Capital expenditures		5,000
Identifiable assets	$ 2,227,000	$ 2,186,000

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.18)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

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The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

-Topic 230

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-Paragraph 28

-Subparagraph (b)

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+ References

No definition available.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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