Derivatives and Hedging - Location of Gains in Consolidated Condensed Statements of Operations that were Recognized and Derivative Contract Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other (expense) income, net
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Net Gain (Loss) Recognized in Income on Derivative Instruments	$ (3,546)	$ (2,251)	$ (9,858)	$ 341