Derivatives and Hedging Activity - Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair value of derivative instruments
Fair Value of Derivatives in an Asset Position	$ 90,905	$ 28,943
Fair Value of Derivatives in a Liability Position	3,880	8,740
Interest rate swaps | Derivatives not designated as hedging instruments
Fair value of derivative instruments
Fair Value of Derivatives in an Asset Position	42,491	14,385
Fair Value of Derivatives in a Liability Position	23
Interest Rate Swap Guarantees | Derivatives not designated as hedging instruments
Fair value of derivative instruments
Fair Value of Derivatives in a Liability Position	1,219	614
Foreign exchange contracts | Derivatives not designated as hedging instruments
Fair value of derivative instruments
Fair Value of Derivatives in an Asset Position	47,875	14,558
Fair Value of Derivatives in a Liability Position	2,638	7,834
Credit spread instrument | Derivatives not designated as hedging instruments
Fair value of derivative instruments
Fair Value of Derivatives in an Asset Position	$ 539
Fair Value of Derivatives in a Liability Position		$ 292