Derivatives (Details 4) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Interest rate contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities	$ (4,774)	$ (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	1,130	0	0
Other long term liabilities | Interest rate contracts | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative liabilities	(4,774)	(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	$ 1,130	$ 0	$ 0