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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2014
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The reconciliations of the denominators of the basic and diluted earnings (loss) per share computations are as follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2014 |  | 2013 |  | 2014 |  | 2013
Weighted-average common shares outstanding—basic | 78,183 |  |  | 75,935 |  |  | 78,154 |  |  | 75,772 |
Dilutive effect of potential common shares | 1,868 |  |  | — |  |  | 1,588 |  |  | 121 |
Weighted-average common shares outstanding—diluted | 80,051 |  |  | 75,935 |  |  | 79,742 |  |  | 75,893 |

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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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