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Note 11 - (Loss) Earnings Per Common Share (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
    Six months ended June 30,
    2015   2016
Income:                
Net (loss)/income     (5,361 )     290  
                 
Earnings per share:                
Weighted average common shares outstanding, basic and diluted     1,959,603       3,426,780  
                 
 (Loss)/earnings per share, basic and diluted     (2.74 )     0.08