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Share-Based and Other Deferred Compensation (Tables) | 12 Months Ended
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Dec. 31, 2013
Acquisition-Related [Member] |
Summary of Activity Related to Share-Based Payment Awards | The following table summarizes activity related to Acquisition-related Awards during the year ended December 31, 2013:
| Acquisition-related Awards
| Number of Shares |  | Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2013 | 1,719 |  |  | $ | 39,338 |
Granted | 27 |  |  | 1,221 |
Vested | (619 | ) |  | (14,395 | )
Unvested Balance at December 31, 2013 | 1,127 |  |  | $ | 26,164 |
Equity Grants [Member] |
Summary of Activity Related to Share-Based Payment Awards | The following table summarizes activity related to Service-based Awards, which includes RSUs as well as LP Units, during the year ended December 31, 2013:
| Service-based Awards
| Number of Shares |  | Grant Date Weighted Average Fair Value
Unvested Balance at January 1, 2013 | 7,972 |  |  | $ | 196,868 |
Granted | 2,398 |  |  | 75,229 |
Forfeited | (60 | ) |  | (1,789 | )
Vested | (3,630 | ) |  | (88,706 | )
Unvested Balance at December 31, 2013 | 6,680 |  |  | $ | 181,602 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration