Note 6 - Capital Stock, Stock Plans, Warrants, and Stock Based Compensation - Stock-based Compensation Recognized (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Allocated stock-based compensation | $ 98,000 | $ 92,000 |
| Employee Stock Option [Member] | ||
| Allocated stock-based compensation | 53,000 | 53,000 |
| Director Stock Options [Member] | ||
| Allocated stock-based compensation | $ 45,000 | $ 39,000 |
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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