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Note 5 - Stock-based Compensation Recognized (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Employee Stock Option [Member] |  |
Allocated Share-based Compensation Expense | $ 53,000 | $ 14,000
Allocated stock-based compensation | (53,000) | (14,000)
Director Stock Options [Member] |  |
Allocated Share-based Compensation Expense | 39,000 | 48,000
Allocated stock-based compensation | (39,000) | (48,000)
Allocated Share-based Compensation Expense | 92,000 | 34,000
Allocated stock-based compensation | $ (92,000) | $ (34,000)

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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