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Note 14 - Income (Loss) Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Year ended December 31, |
|  | 2018 |  |  | 2017 |  |  | 2016 |
Numerator |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (26,563 | ) |  | $ | (28,520 | ) |  | $ | 61,569 |
Preferred stock dividends |  |  | (552 | ) |  |  | (552 | ) |  |  | (552 | )
Net income (loss) applicable to common shares |  | $ | (27,115 | ) |  | $ | (29,072 | ) |  | $ | 61,017 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |
Basic weighted average common shares |  |  | 433,419 |  |  |  | 397,394 |  |  |  | 386,416 |
Dilutive stock options, restricted stock units, and warrants |  |  | — |  |  |  | — |  |  |  | 2,906 |
Diluted weighted average common shares |  |  | 433,419 |  |  |  | 397,394 |  |  |  | 389,322 |
Basic earnings (loss) per common share |  | $ | (0.06 | ) |  | $ | (0.07 | ) |  | $ | 0.16 |
Diluted earnings (loss) per common share |  | $ | (0.06 | ) |  | $ | (0.07 | ) |  | $ | 0.16 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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