Derivatives (Summary Of Types Of Derivatives, Separately By Assets And Liabilities And Fair Value Of Derivatives) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Derivative assets	$ 177,423	$ 342,510
Total liability derivatives	9,675	8,782
Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Derivative assets	4,641	28,144
Interest rate forward sales commitments
Derivatives, Fair Value [Line Items]
Derivative assets	615	7
Total liability derivatives	699	7,257
Interest rate swaps
Derivatives, Fair Value [Line Items]
Derivative assets	171,827	313,090
Total liability derivatives	8,671	370
Interest Rate Contracts | Interest rate lock commitments | Asset Derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	4,641	28,144
Interest Rate Contracts | Interest rate lock commitments | Liability Derivatives
Derivatives, Fair Value [Line Items]
Total liability derivatives	0	0
Interest Rate Contracts | Interest rate forward sales commitments | Asset Derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	615	7
Interest Rate Contracts | Interest rate forward sales commitments | Liability Derivatives
Derivatives, Fair Value [Line Items]
Total liability derivatives	699	7,257
Interest Rate Contracts | Interest rate swaps | Asset Derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	171,827	313,090
Interest Rate Contracts | Interest rate swaps | Liability Derivatives
Derivatives, Fair Value [Line Items]
Total liability derivatives	8,671	370
Foreign currency derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	340	1,269
Total liability derivatives	305	1,155
Foreign currency derivatives | Asset Derivatives
Derivatives, Fair Value [Line Items]
Derivative assets	340	1,269
Foreign currency derivatives | Liability Derivatives
Derivatives, Fair Value [Line Items]
Total liability derivatives	$ 305	$ 1,155