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Dividends and Distribution Payable (Tables) | 12 Months Ended
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Dec. 31, 2016
Stockholders' Equity Note [Abstract] |
Schedule of Dividends Payable [Table Text Block] | The Company declared dividends of $1.92, $1.845 and $1.74 per share during the years ended December 31, 2016, 2015 and 2014; the dividends have been reflected for federal income tax purposes as follows:
|  | 2016 |  | 2015 |  | 2014 |
For the Year Ended December 31, |  |  |  |  |  |  |  |  |  |
Ordinary Income |  | $ | 1.557 |  | $ | 1.519 |  | $ | 1.398 |
Return of Capital |  |  | 0.363 |  |  | 0.326 |  |  | 0.342 |
Total |  | $ | 1.920 |  | $ | 1.845 |  | $ | 1.740 |

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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=6367179&loc=d3e4304-108586 + Details
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