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Note 5 - Income (Loss) Per Share (Tables) | 9 Months Ended
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Sep. 30, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2014 |  |  | 2013 |  |  | 2014 |  |  | 2013 |
|  | (in thousands, except per share data) |
Basic and dilutive numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  | $ | (5,379 | ) |  | $ | (159 | ) |  | $ | (8,178 | ) |  | $ | 10,033 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common shares outstanding |  |  | 44,642 |  |  |  | 38,707 |  |  |  | 41,058 |  |  |  | 38,699 |
Contingently issuable shares - vested DSUs |  |  | 2 |  |  |  | 2 |  |  |  | 2 |  |  |  | 9 |
Weighted-average common shares outstanding—basic |  |  | 44,644 |  |  |  | 38,709 |  |  |  | 41,060 |  |  |  | 38,708 |
Net effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock options |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 63 |
Contingently issuable shares – nonvested DSUs |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 77 |
Weighted-average common shares outstanding—diluted |  |  | 44,644 |  |  |  | 38,709 |  |  |  | 41,060 |  |  |  | 38,848 |
Net income (loss) per common share—basic |  | $ | (0.12 | ) |  | $ | 0.00 |  |  | $ | (0.20 | ) |  | $ | 0.26 |
Net income (loss) per common share—diluted |  | $ | (0.12 | ) |  | $ | 0.00 |  |  | $ | (0.20 | ) |  | $ | 0.26 |

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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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