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Summary of Significant Accounting Policies (Details 2) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Dividends Payable [Line Items] |  |  |
Common Stock, Dividends, Per Share, Declared | $ 1.64 | $ 1.60 | $ 1.60
Ordinary Income [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Common Stock, Dividends, Per Share, Declared | $ 1.372 | $ 1.200 | $ 1.570
Return Of Capital [Member] |  |  |
Dividends Payable [Line Items] |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.268 | $ 0.400 | $ 0.030

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Details
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