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Note 18 - Dilutive Shares Included in Calculation of Diluted Earnings Per Share (Details) - shares
shares in Millions
4 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2015
Dec. 31, 2014
Dilutive Shares Included In Calculation Of Diluted Earnings Per Share [Abstract]      
Unvested share-based awards 0.2 0.2 0.1
Warrants to purchase common shares 1.7 0.3 1.5
Total 1.9 0.5 1.6