Derivatives (Summary Of Types Of Derivatives, Separately By Assets And Liabilities And Fair Value Of Derivatives) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 147,835	$ 49,484
Total liability derivatives	9,323	15,982
Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Asset derivatives	8,149	6,757
Interest Rate Forward Sales Commitments
Derivatives, Fair Value [Line Items]
Asset derivatives	58	1
Total liability derivatives	3,189	2,963
Interest Rate Swap
Derivatives, Fair Value [Line Items]
Asset derivatives	138,826	42,276
Total liability derivatives	5,529	12,746
Interest Rate Contracts | Interest Rate Lock Commitments | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	8,149	6,757
Interest Rate Contracts | Interest Rate Lock Commitments | Other Liabilities
Derivatives, Fair Value [Line Items]
Total liability derivatives	0	0
Interest Rate Contracts | Interest Rate Forward Sales Commitments | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	58	1
Interest Rate Contracts | Interest Rate Forward Sales Commitments | Other Liabilities
Derivatives, Fair Value [Line Items]
Total liability derivatives	3,189	2,963
Interest Rate Contracts | Interest Rate Swap | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	138,826	42,276
Interest Rate Contracts | Interest Rate Swap | Other Liabilities
Derivatives, Fair Value [Line Items]
Total liability derivatives	5,529	12,746
Foreign currency derivative
Derivatives, Fair Value [Line Items]
Asset derivatives	802	450
Total liability derivatives	605	273
Foreign currency derivative | Other Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	802	450
Foreign currency derivative | Other Liabilities
Derivatives, Fair Value [Line Items]
Total liability derivatives	$ 605	$ 273