XML 108 R63.htm IDEA: XBRL DOCUMENT v2.4.1.9
Debt - Interest Expense (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Debt Disclosure [Abstract]      
Interest expense $ 36,669us-gaap_InterestCostsIncurred $ 10,322us-gaap_InterestCostsIncurred $ 3,009us-gaap_InterestCostsIncurred
Less capitalized interest (5,275)us-gaap_InterestCostsCapitalizedAdjustment (3,951)us-gaap_InterestCostsCapitalizedAdjustment   
Other fees and expenses 3,121us-gaap_InterestExpenseOther 1,688us-gaap_InterestExpenseOther 601us-gaap_InterestExpenseOther
Total interest expense $ 34,515us-gaap_InterestExpense $ 8,059us-gaap_InterestExpense $ 3,610us-gaap_InterestExpense