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Note 13 - Shareholders' Equity - Computation of Income (Loss) Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Net income attributable to Common shareholders $ 1,930 $ 2,143 $ 15,709
Weighted average shares outstanding (in shares) 3,953,281 3,924,618 3,850,042
Basic earnings per common share (in dollars per share) [1] $ 0.49 $ 0.55 $ 4.08
Net income attributable to Common shareholders $ 1,930 $ 2,143 $ 15,709
Effect of potentially dilutive restricted common shares (in shares) 26,745
Weighted average diluted shares outstanding (in shares) 3,953,281 3,924,618 3,876,787
Diluted earnings per common share (in dollars per share) [1] $ 0.49 $ 0.55 $ 4.05
[1] On March 4, 2015, the Company effected a 1-for-10 reverse stock split. Basic and diluted earnings per share as of and for the year ended December 31, 2014 have been restated for the effects thereof.