| Shareholders' Equity and Share-based Payments, Including Earnings Per Share Information |
Common Stock Dividends. The Company paid $12.5 million and $11.9 million in quarterly cash dividends during the three months ended September 30, 2016 and 2015, respectively. The Company paid a total of $37.0 million and $49.0 million in quarterly cash dividends during the nine and twelve months ended September 30, 2016, respectively. The Company paid a total of $35.1 million and $46.4 million in quarterly cash dividends during the nine and twelve months ended September 30, 2015, respectively. | | | | | | | | | Basic and Diluted Earnings Per Share. The basic and diluted earnings per share are presented below (in thousands except for share data): | | Three Months Ended September 30, | | 2016 | | 2015 | Weighted average number of common shares outstanding: | | | | Basic number of common shares outstanding | 40,363,819 |
| | 40,289,010 |
| Dilutive effect of unvested performance awards | 62,123 |
| | 40,519 |
| Diluted number of common shares outstanding | 40,425,942 |
| | 40,329,529 |
| Basic net income per common share: | | | | Net income | $ | 74,636 |
| | $ | 56,740 |
| Income allocated to participating restricted stock | (232 | ) | | (184 | ) | Net income available to common shareholders | $ | 74,404 |
| | $ | 56,556 |
| Diluted net income per common share: | | | | Net income | $ | 74,636 |
| | $ | 56,740 |
| Income reallocated to participating restricted stock | (232 | ) | | (184 | ) | Net income available to common shareholders | $ | 74,404 |
| | $ | 56,556 |
| Basic net income per common share: | | | | Distributed earnings | $ | 0.310 |
| | $ | 0.295 |
| Undistributed earnings | 1.530 |
| | 1.105 |
| Basic net income per common share | $ | 1.840 |
| | $ | 1.400 |
| Diluted net income per common share: | | | | Distributed earnings | $ | 0.310 |
| | $ | 0.295 |
| Undistributed earnings | 1.530 |
| | 1.105 |
| Diluted net income per common share | $ | 1.840 |
| | $ | 1.400 |
|
| | | | | | | | | | Nine Months Ended September 30, | | 2016 | | 2015 | Weighted average number of common shares outstanding: | | | | Basic number of common shares outstanding | 40,344,834 |
| | 40,267,533 |
| Dilutive effect of unvested performance awards | 50,977 |
| | 32,268 |
| Diluted number of common shares outstanding | 40,395,811 |
| | 40,299,801 |
| Basic net income per common share: | | | | Net income | $ | 91,112 |
| | $ | 81,270 |
| Income allocated to participating restricted stock | (271 | ) | | (253 | ) | Net income available to common shareholders | $ | 90,841 |
| | $ | 81,017 |
| Diluted net income per common share: | | | | Net income | $ | 91,112 |
| | $ | 81,270 |
| Income reallocated to participating restricted stock | (271 | ) | | (253 | ) | Net income available to common shareholders | $ | 90,841 |
| | $ | 81,017 |
| Basic net income per common share: | | | | Distributed earnings | $ | 0.915 |
| | $ | 0.870 |
| Undistributed earnings | 1.335 |
| | 1.140 |
| Basic net income per common share | $ | 2.250 |
| | $ | 2.010 |
| Diluted net income per common share: | | | | Distributed earnings | $ | 0.915 |
| | $ | 0.870 |
| Undistributed earnings | 1.335 |
| | 1.140 |
| Diluted net income per common share | $ | 2.250 |
| | $ | 2.010 |
|
| | | | | | | | | | Twelve Months Ended September 30, | | 2016 | | 2015 | Weighted average number of common shares outstanding: | | | | Basic number of common shares outstanding | 40,332,835 |
| | 40,255,439 |
| Dilutive effect of unvested performance awards | 47,608 |
| | 24,201 |
| Diluted number of common shares outstanding | 40,380,443 |
| | 40,279,640 |
| Basic net income per common share: | | | | Net income | $ | 91,760 |
| | $ | 85,511 |
| Income allocated to participating restricted stock | (264 | ) | | (265 | ) | Net income available to common shareholders | $ | 91,496 |
| | $ | 85,246 |
| Diluted net income per common share: | | | | Net income | $ | 91,760 |
| | $ | 85,511 |
| Income reallocated to participating restricted stock | (264 | ) | | (265 | ) | Net income available to common shareholders | $ | 91,496 |
| | $ | 85,246 |
| Basic net income per common share: | | | | Distributed earnings | $ | 1.21 |
| | $ | 1.15 |
| Undistributed earnings | 1.06 |
| | 0.97 |
| Basic net income per common share | $ | 2.27 |
| | $ | 2.12 |
| Diluted net income per common share: | | | | Distributed earnings | $ | 1.21 |
| | $ | 1.15 |
| Undistributed earnings | 1.06 |
| | 0.97 |
| Diluted net income per common share | $ | 2.27 |
| | $ | 2.12 |
|
| | | | | | | | | | | | | | | | | | | The amount of restricted stock awards and performance shares at 100% performance level excluded from the calculation of the diluted number of common shares outstanding because their effect was antidilutive is presented below: | | Three Months Ended | | Nine months ended | | Twelve Months Ended | | September 30, | | September 30, | | September 30, | | 2016 | | 2015 | | 2016 | | 2015 | | 2016 | | 2015 | Restricted stock awards | 57,633 |
| | 65,076 |
| | 53,285 |
| | 60,647 |
| | 50,854 |
| | 60,742 |
| Performance shares (a) | 62,995 |
| | 59,898 |
| | 62,995 |
| | 59,898 |
| | 62,995 |
| | 63,111 |
|
| | (a) | Certain performance shares were excluded from the computation of diluted earnings per share as no payouts would have been required based upon performance at the end of each corresponding period. |
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