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Note 13 - Income (Loss) Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2015
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (86,968 | ) |  | $ | 17,824 |  |  | $ | (25,130 | )
Preferred stock dividends |  |  | (552 | ) |  |  | (552 | ) |  |  | (552 | )
Net income (loss) applicable to common shares |  | $ | (87,520 | ) |  | $ | 17,272 |  |  | $ | (25,682 | )
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average common shares |  |  | 373,954 |  |  |  | 353,442 |  |  |  | 318,679 |
Dilutive stock options, restricted stock, and warrants |  |  | — |  |  |  | 3,993 |  |  |  | — |
Diluted weighted average common shares |  |  | 373,954 |  |  |  | 357,435 |  |  |  | 318,679 |
Basic earnings (loss) per common share |  | $ | (0.23 | ) |  | $ | 0.05 |  |  | $ | (0.08 | )
Diluted earnings (loss) per common share |  | $ | (0.23 | ) |  | $ | 0.05 |  |  | $ | (0.08 | )

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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