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Note 14 - Shareholders' Equity (Details Textual) - $ / shares
Jun. 30, 2016
Dec. 31, 2015
Equity [Abstract]    
Preferred Stock, No Par Value $ 0 $ 0
Preferred Stock, Shares Outstanding 0 0
Treasury Stock, Shares 400,000 300,000
Stock Authorized 560,000,000  
Common Stock, Shares Authorized 500,000,000  
Common Stock, Par or Stated Value Per Share $ 0.01 $ 0.01
Preferred Stock, Shares Authorized 60,000,000  
Common Stock, Shares, Outstanding 42,200,000 42,000,000