Note 10 - Warrant Liability (Tables)
 12 Months Ended
Dec. 31, 2013
Warrant Liability [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

Description

 

Fair Value

   

Quoted Prices

In

Active

Markets

(Level 1)

   

Significant

Other

Observable

Inputs

(Level 2)

   

Significant

Other

Unobservable Inputs

(Level 3)

 
                                 

Warrant Liability:

                               

December 31, 2013

  $ 4,573,123       —     $ 4,573,123       —