Note 13 - Weighted Average Diluted Shares Outstanding Included the Diluted Effect of Potential Shares of Common Stock (Details) - shares shares in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Weighted Average Securities Used In Computations Of Basic And Diluted Earnings Per Share [Line Items]
Total	0.5	0.2	0.3	0.6
Restricted Stock Units [Member]
Weighted Average Securities Used In Computations Of Basic And Diluted Earnings Per Share [Line Items]
Unvested restricted stock units	0.4	0.2	0.3	0.2
Warrant
Weighted Average Securities Used In Computations Of Basic And Diluted Earnings Per Share [Line Items]
Warrants to purchase common shares	0.1			0.4