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Earnings per share (Tables) | 9 Months Ended
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Sep. 30, 2013
Earnings Per Share [Abstract] |
Basic and diluted earnings (loss) per share | The following table shows the basic and diluted earnings (loss) per share for the three and nine months ended September 30, 2013 and September 30, 2012:
| For the three months ended September 30,
| 2013 |  | 2012
| Loss | Shares (000) | Per-Share |  | Loss | Shares (000) | Per-Share
Net loss | $ | (9,507 | ) |  |  |  | $ | (12,023 | ) |  |
Amount allocated to common shareholders (1) | 100 | % |  |  |  | 100 | % |  |
Basic EPS: |  |  |  |  |  |  |
Loss allocable to common shareholders | (9,507 | ) | 88,611 |  | $ | (0.11 | ) |  | (12,023 | ) | 88,468 |  | $ | (0.14 | )
Diluted EPS: |  |  |  |  |  |  |
Loss applicable to common shareholders with assumed conversion | $ | (9,507 | ) | 88,611 |  | $ | (0.11 | ) |  | $ | (12,023 | ) | 88,468 |  | $ | (0.14 | )
| For the nine months ended September 30,
| 2013 |  | 2012
| Loss | Shares (000) | Per-Share |  | Loss | Shares (000) | Per-Share
Net loss | $ | (30,638 | ) |  |  |  | $ | (28,701 | ) |  |
Amount allocated to common shareholders (1) | 100 | % |  |  |  | 100 | % |  |
Basic EPS: |  |  |  |  |  |  |
Loss allocable to common shareholders | (30,638 | ) | 88,588 |  | $ | (0.35 | ) |  | (28,701 | ) | 88,549 |  | $ | (0.32 | )
Diluted EPS: |  |  |  |  |  |  |
Loss applicable to common shareholders with assumed conversion | $ | (30,638 | ) | 88,588 |  | $ | (0.35 | ) |  | $ | (28,701 | ) | 88,549 |  | $ | (0.32 | )
(1) | We have not allocated net losses between common and preferred shareholders, as the holders of our preferred shares do not have a contractual obligation to share in the loss.
Schedule of Antidilutive Securities Excluded from Computation of Earnings per Share |
Antidilutive securities excluded from the calculation of diluted EPS: | Three months ended September 30, | Nine months ended September 30,
| 2013 | 2012 | 2013 | 2012
Stock options (1) | 620,334 |  | 626,334 |  | 620,334 |  | 626,334 |
Service-based share awards (1) | 573,628 |  | 406,070 |  | 522,032 |  | 382,462 |
(1) | In periods when we report a net loss, all share awards are excluded from the calculation of diluted weighted average stock outstanding because of their antidilutive effect on earnings (loss) per share.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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