Derivative and Hedging Activities Derivative Impact on Perfomance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Other Liabilities [Member]
Derivative Instruments
Derivatives (trading and other liabilities), fair value	$ 36,308		$ 43,716
Derivatives (trading liabilities)	16,082		16,155
Other Liabilities [Member] | Fair Value, Inputs, Level 2
Derivative Instruments
Derivatives (trading and other liabilities), fair value	36,308		41,671
Derivatives (trading liabilities)	36,308		$ 41,671
Capital markets, net | Interest rate-related instruments — customer and mirror, net
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	2,938	$ (3,090)
Capital markets, net | Foreign currency exchange forwards
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	143	(122)
Capital markets, net | Commodity contracts
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(621)	746
Mortgage banking, net | Interest rate lock commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(2,708)	9,928
Mortgage banking, net | Forward commitments (mortgage)
Derivative Instruments
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (6,300)	$ (10,262)