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Dividends (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Dividend Payments | During 2017, the Company paid regular quarterly cash dividends totaling $55.2 million as detailed below:
| Paid During the Quarter Ended
| March 31, 2017 |  | June 30, 2017 |  | September 30, 2017 |  | December 31, 2017
| (in thousands, except per share amounts)
Cash dividends paid per common share | $ | 0.18625 |  |  | $ | 0.18750 |  |  | $ | 0.18875 |  |  | $ | 0.19000 |
Total cash dividends paid | $ | 13,624 |  |  | $ | 13,750 |  |  | $ | 13,883 |  |  | $ | 13,987 |
Record date | February 17, 2017 |  |  | May 19, 2017 |  |  | August 18, 2017 |  |  | November 17, 2017 |
Payment date | March 24, 2017 |  |  | June 23, 2017 |  |  | September 22, 2017 |  |  | December 22, 2017 |
Dividends Payable on Outstanding Weighted Average Basic Common Shares | Cash dividends declared on the Company’s outstanding weighted average number of basic common shares for the years ended December 31, 2017, 2016 and 2015 were as follows:
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Cash dividends declared per common share | $ | 0.75750 |  |  | $ | 0.73750 |  |  | $ | 0.71750 |

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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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