Derivative Financial Instruments (Derivative Gains Included In Accumulated Other Comprehensive Loss (AOCL) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative Gains Included in AOCI [Roll Forward]
Beginning balance		$ (50,459)	$ (29,528)	$ (30,126)	$ (16,587)
Net gain (loss) on cash flow hedges	[1]	(3,169)	(3,410)	(24,278)	(16,939)
Reclassification of net loss (gain) on cash flow hedges to income	[1]	512	388	1,288	976
Ending balance		$ (53,116)	$ (32,550)	$ (53,116)	$ (32,550)

[1] See Note 8–Derivative Financial Instruments for details of the amount of gain/loss recognized in accumulated other comprehensive loss (“AOCL”) for derivative financial instruments and the amount of gain/loss reclassified from AOCL into income.