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Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Schedule of Share Repurchases | Our repurchase activity is as follows:
| 2017 | 2016 | 2015
Program | Shares | Total $ | $ per share | Shares | Total $ | $ per share | Shares | Total $ | $ per share
Open market | 8,676 |  | $ | 283,654 |  | $ | 32.69 |  | 165,598 |  | $ | 4,440,658 |  | $ | 26.82 |  | 1,037,590 |  | $ | 24,999,963 |  | $ | 24.09 |
401(k) | 467,580 |  | 16,336,084 |  | 34.94 |  | 540,501 |  | 14,875,850 |  | 27.52 |  | 512,754 |  | 11,557,598 |  | 22.54 |
Directors and employees | 45,878 |  | 1,614,425 |  | 35.19 |  | 30,072 |  | 823,446 |  | 27.38 |  | 25,746 |  | 585,413 |  | 22.74 |
Total | 522,134 |  | $ | 18,234,163 |  | $ | 34.92 |  | 736,171 |  | $ | 20,139,954 |  | $ | 27.36 |  | 1,576,090 |  | $ | 37,142,974 |  | $ | 23.57 |
| Inception to Date
Program | Shares | Total $ | $ per share
Open market | 3,843,495 |  | $ | 61,232,115 |  | $ | 15.93 |
401(k) | 6,550,023 |  | 82,068,805 |  | 12.53 |
Directors and employees | 1,919,510 |  | 17,278,033 |  | 9.00 |
Total | 12,313,028 |  | $ | 160,578,953 |  | $ | 13.04 |
Schedule of Dividends | Our recent dividends are as follows:
Declaration Date | Record Date | Payment Date | Dividend per Share
May 19, 2015 | June 12, 2015 | July 1, 2015 | $0.11
October 29, 2015 | December 2, 2015 | December 23, 2015 | $0.11
May 24, 2016 | June 10, 2016 | July 1, 2016 | $0.11
November 9, 2016 | December 2, 2016 | December 23, 2016 | $0.13
May 16, 2017 | June 9, 2017 | July 7, 2017 | $0.13
November 7, 2017 | November 30, 2017 | December 21, 2017 | $0.13

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- Definition Tabular disclosure of all or some of the information related to dividends declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 + Details
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