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Stockholders' Equity (Tables) | 3 Months Ended
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Mar. 31, 2019
Equity [Abstract] |
Cash Dividends | Cash Dividends — The Company paid cash dividends during the three months ended March 31, 2019 and 2018 as follows:
2019: | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 21, 2019 | $ | 0.04 |  |  | $ | 8,499 |
2018: | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 22, 2018 | $ | 0.02 |  |  | $ | 4,443 |
Paid on June 21, 2018 |  | 0.04 |  |  |  | 8,832 |
Paid on September 20, 2018 |  | 0.04 |  |  |  | 8,685 |
Paid on December 20, 2018 |  | 0.04 |  |  |  | 8,629 |
Total cash dividends | $ | 0.14 |  |  | $ | 30,589 |
Treasury Stock Acquisition | Treasury stock acquisitions during the three months ended March 31, 2019 were as follows (dollars in thousands):
| Shares |  |  | Cost |
Treasury shares at beginning of period |  | 53,701,096 |  |  | $ | 1,080,448 |
Purchases pursuant to stock buyback program |  | 5,408,132 |  |  |  | 75,110 |
Acquisitions pursuant to long-term incentive plan |  | 240 |  |  |  | 3 |
Treasury shares at end of period |  | 59,109,468 |  |  | $ | 1,155,561 |

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