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Note 21 - Subsequent Event (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Dec. 31, 2008
Dec. 31, 2004
Apr. 30, 2016
IBB [Member] | Other Income [Member] | Scenario, Forecast [Member]        
Gain from (Recovery on) Sale of Investment, Before Tax $ 588      
IBB [Member]        
Payments to Acquire Interest in Subsidiaries and Affiliates     $ 1,400  
Other than Temporary Impairment Losses, Investments   $ 866    
IBB [Member] | Lizton [Member]        
Business Acquisition, Share Price       $ 7.25