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Note 7 - Income Per Share (Details) - Computation of Income (Loss) Per Share - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Note 7 - Income Per Share (Details) - Computation of Income (Loss) Per Share [Line Items]        
Basic Earnings Per Share-net income (in Dollars) $ 633,000 $ 17,261,000 $ 1,611,000 $ 18,105,000
Basic Earnings Per Share-common shares outstanding [1] 3,872,298 3,850,206 3,872,074 3,849,762
Basic Earnings Per Share-Amount (in Dollars per share) [1],[2] $ 0.16 $ 4.48 $ 0.42 $ 4.70
Effect of Dilutive Securities        
Diluted Earnings Per Share-net incom (in Dollars) $ 633,000 $ 17,261,000 $ 1,611,000 $ 18,105,000
Diluted Earnings Per Share-common shares outstanding [1] 3,906,920 3,878,218 3,902,773 3,882,409
Diluted Earnings Per Share-Amount (in Dollars per share) [1],[2] $ 0.16 $ 4.45 $ 0.41 $ 4.66
Restricted Stock [Member]        
Effect of Dilutive Securities        
Non-vested Restricted Stock Grants-common shares outstanding [1] 34,622 28,012 30,699 32,647
[1] All common stock data has been restated for a 1-for-10 reverse stock split which took effect on March 4, 2015
[2] All common stock data has been restated for a 1-for-10 reverse stock split which took effect on March 4, 2015.