Note 4 - Stock Plans and Stock Based Compensation - Stock-based Compensation Recognized (Details) - USD ($) |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
|
| Employee Stock Option [Member] | ||||
| Allocated Share-based Compensation Expense | $ 13,000 | $ 12,000 | $ 39,000 | $ (27,000) |
| Director Stock Options [Member] | ||||
| Allocated Share-based Compensation Expense | 2,000 | 3,000 | 23,000 | 25,000 |
| Allocated Share-based Compensation Expense | $ 15,000 | $ 15,000 | $ 62,000 | $ (2,000) |
| 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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