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Note 12 - Shareholders' Equity (Details) - Computation of Income (Loss) Per Share - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Note 12 - Shareholders' Equity (Details) - Computation of Income (Loss) Per Share [Line Items]      
Net income (loss) $ 2,143,000 $ 15,709,000 $ (7,289,000)
Weighted average common shares (in Shares) 3,924,618 3,850,042 [1] 3,842,353 [1]
Per share amount (in Dollars per share) $ 0.55 $ 4.08 [1],[2] $ (1.90) [1],[2]
Effect of Dilutive Securities      
Net income (loss)    
Weighted average common shares (in Shares) [1]    
Per share amount [1]    
Net income (loss) $ 2,143,000 $ 15,709,000 $ (7,289,000)
Weighted average common shares (in Shares) 3,924,618 3,876,787 [1] 3,842,353 [1]
Per share amount (in Dollars per share) $ 0.55 $ 4.05 [1],[2] $ (1.90) [1],[2]
Restricted Stock [Member]      
Effect of Dilutive Securities      
Net income (loss)  
Weighted average common shares (in Shares) [1]   26,745  
Per share amount [1]  
[1] On March 4, 2015, the Company affected a 1-for-10 reverse stock split. All common stock and per share data for year 2014 and 2013, have been restated to give effect to the reverse stock split.
[2] On March 4, 2015, the Company affected a 1-for-10 reverse stock split. Per share data for 2014 and 2013 has been restated to give effect to the reverse stock split.