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Note 10 - Common Stock and Additional Paid-In Capital (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Note 10 - Common Stock and Additional Paid-In Capital (Tables) [Line Items]    
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three months ended
March 31,
 
   
2013
   
2014
 
Net income
  $ 2,726     $ 54  
Net income available to common shareholders
  $ 2,726     $ 54  
                 
Weighted average common shares outstanding, basic
    2,431,113       3,232,168  
Weighted average common shares outstanding, diluted
    2,432,184       3,232,168  
                 
Earnings per common share, basic and diluted
  $ 1.12     $ 0.02  
 
 
Year Ended December 31,
 
 
 
2011
 
 
2012
 
 
2013
 
Net (loss) income
 
 
$(189,112
)
 
 
$(63,984
)
 
 
$1,408
 
Net (loss) income available to common shareholders
 
 
$(189,112
)
 
 
$(63,984
)
 
 
$1,408
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding, basic
 
 
900,668
 
 
 
2,427,083
 
 
 
2,437,361
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Weighted average common shares outstanding, diluted
 
 
900,668
 
 
 
2,427,083
 
 
 
2,444,504
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(Loss) / income per common share, basic and diluted
 
 
$(209.97
)
 
 
$(26.36
)
 
 
$0.58
 
Common Shares Outstanding [Member]
    
Note 10 - Common Stock and Additional Paid-In Capital (Tables) [Line Items]    
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   
Three months ended
March 31
 
   
2013
   
2014
 
Earnings per share, basic and diluted before reverse stock split
  $ 0.16     $ 0.00  
Reverse stock split impact
  $ 0.96     $ 0.02  
Earnings per share, basic and diluted after reverse stock split
  $ 1.12     $ 0.02