Note 5 - Loss Per Common Share (Details) - Weighted Average Common Shares - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator
Net income (loss)	$ (9,890)	$ 3,676	$ (24,005)	$ 919
Preferred stock dividends	(138)	(138)	(414)	(414)
Net income (loss) applicable to common shares for basic and diluted earnings per share	$ (10,028)	$ 3,538	$ (24,419)	$ 505
Denominator
Basic weighted average common shares	377,508	359,472	372,555	348,801
Dilutive warrants, stock options and restricted stock	0	2,790	0	5,872
Diluted weighted average common shares	377,508	362,262	372,555	354,673
Basic earnings (loss) per common share
Net income (loss) applicable to common shares	$ (0.03)	$ 0.01	$ (0.07)
Diluted earnings (loss) per common share
Net income (loss) applicable to common shares	$ (0.03)	$ 0.01	$ (0.07)