Note 8 - Equity - Stock Repurchase Option (Details)  | 
 Dec. 31, 2013  
$ / shares 
 | 
|---|---|
| Year 1 (in dollars per share) | $ 0.56 | 
| Year 2 (in dollars per share) | 0.68 | 
| Year 3 (in dollars per share) | 0.84 | 
| Year 4 (in dollars per share) | 1.03 | 
| Year 5 (in dollars per share) | 1.28 | 
| Year 6 (in dollars per share) | 1.59 | 
| Year 7 (in dollars per share) | 1.97 | 
| Year 8 (in dollars per share) | $ 2.45 | 
| X | ||||||||||
- Definition Represents the option exercise price in the first year. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year eight. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year five. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year four. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year seven. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year six. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year three. No definition available. 
  | 
| X | ||||||||||
- Definition Represents the option exercise price in year two. No definition available. 
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