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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2017
Basic and Diluted Weighted Average Shares Outstanding | Basic and diluted weighted average shares outstanding were as follows:
|  | Three months ended September 30, |  |  | Nine months ended September 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Weighted average common shares |  |  | 41,236,554 |  |  |  | 33,779,141 |  |  |  | 36,435,591 |  |  |  | 33,485,448 |
Dilutive common stock options and restricted stock units |  |  | 484,242 |  |  |  | 533,746 |  |  |  | 454,340 |  |  |  | 526,086 |
Dilutive effect of senior convertible notes |  |  | 842,206 |  |  |  | — |  |  |  | 496,402 |  |  |  | — |
Weighted average common shares, assuming dilution |  |  | 42,563,002 |  |  |  | 34,312,887 |  |  |  | 37,386,333 |  |  |  | 34,011,534 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + 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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