Effect of Cash Flow Derivatives on the Balance Sheet and Income Statement, Before Tax (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	$ (2,879)	$ 3,453	$ (2,588)	$ 6,327
Interest Rate Swap [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative	(302)	13	(2,818)	(987)
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	(274)	359	(467)	1,278
Interest Rate Cap [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative	0	356	782	646
Interest Rate Cap [Member] | Interest Expense [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	0	252	392	849
Foreign Exchange Option [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative	(252)	1,011	(1,221)	1,229
Foreign Exchange Option [Member] | Cost of Sales [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	(450)	289	(612)	451
Currency Swap 1 [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative	(2,326)	2,703	(1,969)	4,126
Currency Swap 2 [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Amount of Gain (Loss) Recognized in OCI on Derivative	0	0	0	0
Currency Swap [Member] | Interest Expense [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	88	387	537	1,297
Currency Swap [Member] | Other Income (Expense) [Member]
Derivative Instruments Designated as Hedging Instruments [Abstract]
Gain (Loss) Reclassified from  AOCI into Income	$ (2,242)	$ 2,168	$ (2,438)	$ 2,453