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Fair Value Of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 Carrying value | Dec. 31, 2012 Fair value
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Carying value and fair value of notes payable and convertible notes payable | $ 1,555,672 | $ 1,585,756

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- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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