Derivatives (Effects of Derivative Instruments on the Statements of Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Derivative Instruments, Gain (Loss) [Line Items]
Derivative income reflected in income statement	$ 25,261	$ 43,578	$ 30,219
Derivatives Designated as Hedging Instruments [Member] | Cash Flow Hedge [Member] | Interest Rate Swaps - Variable Rate Loans [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest And Fee Income Loans And Leases Held In Portfolio	Interest And Fee Income Loans And Leases Held In Portfolio	Interest And Fee Income Loans And Leases Held In Portfolio
Derivative income reflected in income statement	$ 9,928	$ 26,674	$ 17,351
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Interest Rate Swaps - Securities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Income Securities Taxable	Interest Income Securities Taxable	Interest Income Securities Taxable
Derivative income reflected in income statement	$ 4,963	$ (640)	$ 8
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Securities Termination [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Debt And Equity Securities Gain Loss	Debt And Equity Securities Gain Loss	Debt And Equity Securities Gain Loss
Derivative income reflected in income statement	$ 1,620	$ 2,499	$ 0
Derivatives Designated as Hedging Instruments [Member] | Fair Value Hedging [Member] | Brokered Deposits [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense Deposits	Interest Expense Deposits	Interest Expense Deposits
Derivative income reflected in income statement	$ 0	$ 0	$ 46
Derivatives Not Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income Other	Noninterest Income Other	Noninterest Income Other
Derivative income reflected in income statement	$ 5,832	$ 13,477	$ 12,814
Derivatives Not Designated as Hedging Instruments [Member] | Residential mortgage banking
Derivative Instruments, Gain (Loss) [Line Items]
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Noninterest Income	Noninterest Income	Noninterest Income
Derivative income reflected in income statement	$ 2,918	$ 1,568	$ 0