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Debt (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Debt
Gross interest cost	$ 8,500	$ 5,027	$ 19,228	$ 7,425
Capitalized interest	(3,388)	(5,027)	(8,726)	(7,055)
Interest expense	$ 5,112	$ 0	$ 10,502	$ 370

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Total interest costs incurred during the period and either capitalized or charged against earnings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

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Amount of interest capitalized, including amount of allowance for funds used during construction.

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829



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-Name Accounting Standards Codification

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Amount of the cost of borrowed funds accounted for as interest expense.

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-Name Regulation S-X (SX)

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