Derivative and Hedging Instruments Derivative Instruments and Hedging Activities Gain or Loss Recognized Related to Cash Flow Hedges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Losses from interest rate contracts	$ (140)		$ 0	$ 0
Amount of loss related to the effective portion recognized in other comprehensive loss	(47,144)		(10,302)	0
Amount of loss related to the portion subsequently reclassified to earnings	(3,751)	[1]	(2,510)	(2,508)
Amount of loss related to the ineffective portion and amount excluded from effectiveness testing	(140)		$ 0	$ 0
Prior hedge program [Member]
Derivative [Line Items]
Losses from interest rate contracts	$ (200)

[1] During the year ended December 31, 2016, the Company accelerated the reclassification of amounts in other comprehensive loss to earnings as a result of the hedged forecasted transactions becoming probable not to occur. The accelerated amounts were a loss of approximately $0.2 million and are included in the table above.