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Debt (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Disclosure [Abstract]
Gross interest	$ 25,029	$ 8,500	$ 69,181	$ 19,228
Capitalized interest	(1,163)	(3,388)	(7,642)	(8,726)
Interest expense	$ 23,866	$ 5,112	$ 61,539	$ 10,502

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

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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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-Publisher FASB



-Name Accounting Standards Codification



-Glossary Allowance for Funds Used during Construction



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

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