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Earnings per Share | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings per Share | Earnings per Share The following table summarizes the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the years ending December 31:
| 2016 |  | 2015 |  | 2014
Weighted average common shares issued | 105,563,455 |  |  | 105,563,455 |  |  | 105,563,455 |
Average treasury shares | (16,605,461 | ) |  | (16,045,900 | ) |  | (12,294,217 | )
Average unearned nonvested shares | (106,421 | ) |  | (160,788 | ) |  | (154,584 | )
Weighted average common shares and common stock equivalents used to calculate basic earnings per share | 88,851,573 |  |  | 89,356,767 |  |  | 93,114,654 |
Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share | — |  |  | — |  |  | — |
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share | 88,851,573 |  |  | 89,356,767 |  |  | 93,114,654 |
The following table shows the number of shares and the price per share related to common stock equivalents that were not included in the computation of diluted earnings per share for the years ended December 31, because to do so would have been anti-dilutive.
| 12/31/2016 |  | 12/31/2015 |  | 12/31/2014
|  |  | Price Range |  |  |  | Price Range |  |  |  | Price Range
| Shares |  | From |  | To |  | Shares |  | From |  | To |  | Shares |  | From |  | To
Stock Options | — |  |  | $ | — |  |  | $ | — |  |  | — |  |  | $ | — |  |  | $ | — |  |  | 15,000 |  |  | $ | 14.55 |  |  | $ | 14.55 |
Restricted Stock | 67,920 |  |  | 8.38 |  |  | 13.96 |  |  | 92,002 |  |  | 6.82 |  |  | 9.84 |  |  | 106,977 |  |  | 5.26 |  |  | 9.26 |

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