Fair Value of Financial Instruments (Details 6) (USD $) In Thousands, unless otherwise specified				9 Months Ended
Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013 VIE liabilities	Sep. 30, 2013 VIE liabilities Discounted cash flow Minimum	Sep. 30, 2013 VIE liabilities Discounted cash flow Maximum
Quantitative information for Level 3 Fair Value Measurements Liabilities
Carrying Value	$ 99,761,146	$ 1,527,168	$ 1,783,640
Yield (as a percent)				0.00%	791.80%
Duration				0 years	23 years 6 months

Duration of financial instrument used as an input to measure fair value.

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- Definition

Percentage of assumed long-term growth in revenues, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19-26)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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