Fair Value Measurement (Schedule Of Reconciliation Of Assets And Liabilities Measured At Fair Value Using Significant Unobservable Inputs (Level 3) On A Recurring Basis) (Details) - Level 3 - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Junior subordinated debentures, at fair value
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period	$ (29,840)	$ (29,045)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period	(14,812)	7,866
Junior subordinated debentures, at fair value
Beginning Balance	(316,440)	(323,639)
Change included in earnings	(29,840)	(29,045)
Change in fair values included in comprehensive income/loss	(14,812)	7,866
Purchases and issuances	0	0
Sales and settlements	30,197	28,378
Ending Balance	(330,895)	(316,440)
Interest rate lock commitments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period	(16)	(137)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period	0	0
Interest rate lock commitments, net
Beginning Balance	(137)	32
Change included in earnings	4	(234)
Change in fair values included in comprehensive income/loss	0	0
Purchases and issuances	(886)	(1,029)
Sales and settlements	1,003	1,094
Ending Balance	(16)	(137)
Residential mortgage servicing rights
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period	5,229	(6,122)
Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period	0	0
Residential mortgage servicing rights
Beginning balance	109,243	185,017
Change included in earnings	(7,337)	(23,816)
Change in fair values included in comprehensive income/loss	0	0
Purchases and issuances	6,452	5,347
Sales and settlements	0	(57,305)
Ending balance	$ 108,358	$ 109,243

Fair Value Measurement (Schedule Of Reconciliation Of Assets And Liabilities Measured At Fair Value Using Significant Unobservable Inputs (Level 3) On A Recurring Basis) (Details) - Level 3 - USD ($)
$ in Thousands

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Junior subordinated debentures, at fair value

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Change in unrealized gains or losses for the period included in earnings for assets and liabilities held at end of period

$ (29,840)

$ (29,045)

Change in unrealized gains or losses for the period included in other comprehensive income for assets and liabilities held at end of period

(14,812)

7,866

Junior subordinated debentures, at fair value