Note 13 - Income (Loss) Per Common Share (Details) - Weighted Average Common Shares (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Numerator
Net income (loss)	$ 17,824us-gaap_NetIncomeLoss	$ (25,130)us-gaap_NetIncomeLoss	$ 14,954us-gaap_NetIncomeLoss
Preferred stock dividends	(552)us-gaap_DividendsPreferredStock	(552)us-gaap_DividendsPreferredStock	(552)us-gaap_DividendsPreferredStock
Net income (loss) applicable to common shares	$ 17,272	$ (25,682)	$ 14,402
Denominator
Basic weighted average common shares (in Shares)	353,442	318,679	285,375
Dilutive stock options, restricted stock, and warrants (in Shares)	3,993		12,191
Diluted weighted average common shares (in Shares)	357,435	318,679	297,566
Basic earnings (loss) per common share (in Dollars per share)	$ 0.05us-gaap_EarningsPerShareBasic	$ (0.08)us-gaap_EarningsPerShareBasic	$ 0.05us-gaap_EarningsPerShareBasic
Diluted earnings (loss) per common share (in Dollars per share)	$ 0.05us-gaap_EarningsPerShareDiluted	$ (0.08)us-gaap_EarningsPerShareDiluted	$ 0.05us-gaap_EarningsPerShareDiluted

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Amount of paid and unpaid preferred stock dividends declared with the form of settlement in cash, stock and payment-in-kind (PIK).

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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