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Note 1 - Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Components [Member]

Notes Tables

Property, Plant and Equipment [Table Text Block]

(in thousands)		201 5				201 4
Machinery and equipment		$	2,178			$	1,911
Furniture and fixtures			197				192
Leasehold improvements			258				258
Building			308				308
Subtotal			2,941				2,669
Accumulated depreciation			(2,305	)			(2,088	)
Property and equipment, net		$	636			$	581

Useful Lives [Member]

Notes Tables

Property, Plant and Equipment [Table Text Block]

Classification		Useful life in years
Machinery and equipment		3	-	5
Furniture and fixtures		5	-	7
Leasehold improvements		1	-	5
Building			39

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

Year ended December 31,		201 5				2 014
Risk free interest rate			2.7	%			2.5	%
Expected life of option in years			10				10
Expected dividend yield rate			0	%			0	%
Expected volatility			66	%			73	%

X

- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

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 210.5-02.13)
-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 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 13
-Subparagraph b
-Article 5

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- Definition

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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