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Note 15 - Stockholders' Equity (Details) - Summary of Nonvested Options (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Summary of Nonvested Options [Abstract]      
Nonvested as of December 31, 2013   5,617,554  
Nonvested as of December 31, 2013   $ 3.12  
Nonvested as of September 30, 2014   5,779,070  
Nonvested as of September 30, 2014   $ 3.39  
Options granted   1,661,862  
Options granted $ 2.50 $ 4.02 $ 2.54
Options vested   (1,440,148)  
Options vested   $ 3.00  
Options forfeited   (60,198)  
Options forfeited   $ 4.35