Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest rate swaps [Member]
Derivatives, Fair Value [Line Items]
Notional amount	$ 320,000	$ 60,000
Interest rate swaps with customers [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,022,388	991,002
Mirror swaps with counterparties [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,022,388	991,002
Risk participation-in agreement [Member]
Derivatives, Fair Value [Line Items]
Notional amount	163,207	92,717
Interest rate lock commitments [Member]
Derivatives, Fair Value [Line Items]
Notional amount	49,800	167,671
Forward sale commitments [Member]
Derivatives, Fair Value [Line Items]
Notional amount	103,626	279,653
Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Commercial Loans [Member]
Derivatives, Fair Value [Line Items]
Notional amount	300,000
Designated as Hedging Instrument [Member] | Interest rate swaps [Member] | Federal Home Loan Bank Advances
Derivatives, Fair Value [Line Items]
Notional amount	20,000	60,000
Not Designated as Hedging Instrument [Member] | Interest rate swaps with customers [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,000,000	991,000
Not Designated as Hedging Instrument [Member] | Mirror swaps with counterparties [Member]
Derivatives, Fair Value [Line Items]
Notional amount	1,000,000	991,000
Not Designated as Hedging Instrument [Member] | Risk participation-out agreement [Member]
Derivatives, Fair Value [Line Items]
Notional amount	74,200	61,600
Not Designated as Hedging Instrument [Member] | Risk participation-in agreement [Member]
Derivatives, Fair Value [Line Items]
Notional amount	$ 163,200	$ 92,700