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Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| Three months ended June 30, 2018
| Net Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS | $ | 17,803 |  |  | 82,330 |  |  | $ | 0.22 |
Effect of restricted stock | — |  |  | 38 |  |  |
Diluted EPS | $ | 17,803 |  |  | 82,368 |  |  | $ | 0.22 |
| Three months ended June 30, 2017
| Net Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS | $ | 14,616 |  |  | 83,294 |  |  | $ | 0.18 |
Effect of restricted stock | — |  |  | 44 |  |  |
Diluted EPS | $ | 14,616 |  |  | 83,338 |  |  | $ | 0.18 |
| Six months ended June 30, 2018
| Net Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS | $ | 31,182 |  |  | 82,817 |  |  | $ | 0.38 |
Effect of restricted stock | — |  |  | 38 |  |  |
Diluted EPS | $ | 31,182 |  |  | 82,855 |  |  | $ | 0.38 |
| Six months ended June 30, 2017
| Net Income (numerator) |  | Shares (denominator) |  | Per Share Amount
Basic EPS | $ | 28,653 |  |  | 83,293 |  |  | $ | 0.34 |
Effect of restricted stock | — |  |  | 44 |  |  |
Diluted EPS | $ | 28,653 |  |  | 83,337 |  |  | $ | 0.34 |

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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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