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Note 21 - Earnings Per Share (Details Textual) - $ / shares
shares in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Convertible Series A Preferred Stock [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2.0 2.0
Restricted Stock Units [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 0.3  
Warrant with Exercise Price of $14.93 [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   1.8
Share Price   $ 14.93
Warrant with Exercise Price of $16.12 [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   1.8
Share Price   $ 16.12
Employee Stock Option [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 5.2 4.8