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Note 24 - Shareholders' Equity (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
Sep. 03, 2013
Dec. 31, 2019
May 20, 2019
Dec. 31, 2018
Shareholders Equity [Line Items]        
Stock Authorized   560,000,000    
Common Stock, Shares Authorized   500,000,000    
Common Stock, Par or Stated Value Per Share   $ 0.01 $ 0.01 $ 0.01
Preferred Stock, Shares Authorized   60,000,000   60,000,000
Preferred Stock, No Par Value   $ 0   $ 0
Common Stock, Shares, Outstanding   43,200,000   42,800,000
Preferred Stock, Shares Issued   2,000,000   2,000,000
Treasury Stock, Shares   700,000   600,000
Registration Rights Agreement Condition for Demanding Shelf Registration Statement, Takedown Percentage Ownership 10.00%      
Registration Rights Agreement, Condition For Demanding Shelf Registration Statement, Takedown Minimum Aggregate Market Value $ 75      
Backstop Parties [Member]        
Shareholders Equity [Line Items]        
Stockholders Percentage of Outstanding Common Stock, Potentially Requiring Securities Offering 10.00%      
Minimum Aggregate Market Value of Potential Stock Issuance $ 75      
Series A Preferred Stock [Member]        
Shareholders Equity [Line Items]        
Preferred Stock, Shares Outstanding   2,000,000   2,000,000
Preferred Stock, Shares Issued   2,000,000   2,000,000