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Net Income Per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Basic and diluted net income per common share | Basic and diluted net income per common share calculations are as follows for the periods presented:
| Three Months Ended
| June 30,
| 2018 |  | 2017
Basic |  |  |
Net income applicable to common stock | $ | 36,710 |  |  | $ | 25,284 |
Average common shares outstanding | 49,413,754 |  |  | 44,415,423 |
Net income per common share - basic | $ | 0.74 |  |  | $ | 0.57 |
Diluted |  |  |
Net income applicable to common stock | $ | 36,710 |  |  | $ | 25,284 |
Average common shares outstanding | 49,413,754 |  |  | 44,415,423 |
Effect of dilutive stock-based compensation | 136,007 |  |  | 108,118 |
Average common shares outstanding - diluted | 49,549,761 |  |  | 44,523,541 |
Net income per common share - diluted | $ | 0.74 |  |  | $ | 0.57 |
| Six Months Ended
| June 30,
| 2018 |  | 2017
Basic |  |  |
Net income applicable to common stock | $ | 70,536 |  |  | $ | 49,256 |
Average common shares outstanding | 49,385,244 |  |  | 44,390,021 |
Net income per common share - basic | $ | 1.43 |  |  | $ | 1.11 |
Diluted |  |  |
Net income applicable to common stock | $ | 70,536 |  |  | $ | 49,256 |
Average common shares outstanding | 49,385,244 |  |  | 44,390,021 |
Effect of dilutive stock-based compensation | 136,801 |  |  | 110,259 |
Average common shares outstanding - diluted | 49,522,045 |  |  | 44,500,280 |
Net income per common share - diluted | $ | 1.42 |  |  | $ | 1.11 |

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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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