Derivatives (Details 4) - USD ($) $ in Thousands		Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Derivative [Line Items]
Derivative assets	[1]	$ 72,495	$ 11,789	$ (1,949)
Interest rate contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities		(5,422)	(3,133)	0
Interest rate contracts | Hedging Instrument
Derivative [Line Items]
Derivative liabilities		0	(191)	0
Foreign currency contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative assets		1,391	0	0
Other long term liabilities | Interest rate contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities		(5,422)	(3,133)	0
Other short term liabilities | Interest rate contracts | Hedging Instrument
Derivative [Line Items]
Derivative liabilities		0	(191)	0
Short term assets | Foreign currency contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative assets		$ 1,391	$ 0	$ 0

[1] Includes associated cash posted/received as collateral