Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income (Expense), Net [Abstract]
Other income (expense), net		$ (32,743)	$ (53,681)	$ 2,828
Foreign currency transaction losses on net monetary assets denominated in bolivar		10,200	46,300
Expense related to prepayment of debt	$ 7,400
Foreign currency translation expenses		17,000
Interest expense		$ 7,900	$ 5,700	$ 3,000