Note 6 - Capital Stock, Stock Plans, Warrants, and Stock Based Compensation - Nonvested Shares (Details) |
12 Months Ended |
|---|---|
|
Dec. 31, 2016
$ / shares
shares
| |
| Non-vested options January 1, 2016 (in shares) | shares | 48,667 |
| Non-vested options January 1, 2016 (in dollars per share) | $ / shares | $ 2.87 |
| Granted (in shares) | shares | 62,000 |
| Granted (in dollars per share) | $ / shares | $ 2.19 |
| Vested (in shares) | shares | (30,334) |
| Vested (in dollars per share) | $ / shares | $ 2.87 |
| Forfeited (in shares) | shares | (15,000) |
| Forfeited (in dollars per share) | $ / shares | $ 2.88 |
| Non-vested options at December 31, 2016 (in shares) | shares | 65,333 |
| Non-vested options at December 31, 2016 (in dollars per share) | $ / shares | $ 2.23 |
| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
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| X | ||||||||||
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Number of non-vested options outstanding. No definition available.
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| X | ||||||||||
- Definition Number of non-vested options forfeited. No definition available.
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| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options forfeited. No definition available.
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| X | ||||||||||
- Definition Weighted average grant-date fair value of non-vested options outstanding. No definition available.
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| X | ||||||||||
- Definition Number of options vested. No definition available.
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| X | ||||||||||
- Definition Weighted average grant-date fair value of options vested. No definition available.
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