Guarantees (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Dec. 31, 2021
Guarantor Obligations [Line Items]
Derivative Liabilities	[1]	$ 27,599	$ 12,101
Notional amount of underlying interest rate swaps associated with risk participation agreements		2,857,449	$ 2,916,181
Financial Standby Letter Of Credit [Member]
Guarantor Obligations [Line Items]
Standby letters of credit, net liability		4,000
Contractual amount of letters of credit, guaranteed maximum potential future payments		504,000
Risk Participation Agreement [Member] | Indirect Guarantee Of Indebtedness [Member]
Guarantor Obligations [Line Items]
Derivative Liabilities		162
Notional amount of underlying interest rate swaps associated with risk participation agreements		$ 366,200
Minimum [Member] | Risk Participation Agreement [Member]
Guarantor Obligations [Line Items]
Term, in years		2 years
Maximum [Member] | Risk Participation Agreement [Member]
Guarantor Obligations [Line Items]
Term, in years		15 years

[1] * The fair value of each class of derivative is shown in Note 11.