Fair Value Measurement (Schedule Of Carrying Value And Fair Value Of Financial Instruments Not Recorded At Fair Value) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financial assets:
Equity and other investment securities	$ 76,995	$ 72,959
Investment securities available for sale	8,829,870	3,196,166
Investment securities held to maturity	2,300	2,476
Loans held for sale, at fair value	30,715	71,647
Loans and leases, net	37,001,080	25,854,846
Restricted equity securities	179,274	47,144
Residential mortgage servicing rights	109,243	185,017	$ 123,615	$ 92,907
Bank owned life insurance	680,948	331,759
Derivatives	38,085	15,444
Financial liabilities:
Demand, money market, and savings deposits	41,607,020	27,065,612
Time deposits	6,227,569
Securities sold under agreements to repurchase	252,119	308,769
Borrowings	3,950,000	906,175
Junior subordinated debentures, at fair value	316,440	323,639
Junior and other subordinated debentures, at amortized cost	107,895	87,813
Derivatives	261,091	271,205
Carrying Value
Financial assets:
Cash and cash equivalents	2,162,534	1,294,643
Equity and other investment securities	76,995	72,959
Investment securities available for sale	8,829,870	3,196,166
Investment securities held to maturity	2,300	2,476
Loans held for sale, at fair value	30,715	71,647
Loans and leases, net	37,001,080	25,854,846
Restricted equity securities	179,274	47,144
Residential mortgage servicing rights	109,243	185,017
Bank owned life insurance	680,948	331,759
Derivatives	38,085	15,444
Financial liabilities:
Demand, money market, and savings deposits	35,379,451	24,355,381
Time deposits	6,227,569	2,710,231
Securities sold under agreements to repurchase	252,119	308,769
Borrowings	3,950,000	906,175
Junior subordinated debentures, at fair value	316,440	323,639
Junior and other subordinated debentures, at amortized cost	107,895	87,813
Derivatives	261,091	271,205
Fair Value
Financial assets:
Cash and cash equivalents	2,162,534	1,294,643
Equity and other investment securities	76,995	72,959
Investment securities available for sale	8,829,870	3,196,166
Investment securities held to maturity	3,025	3,197
Loans held for sale, at fair value	30,715	71,647
Loans and leases, net	35,810,989	24,399,370
Restricted equity securities	179,274	47,144
Residential mortgage servicing rights	109,243	185,017
Bank owned life insurance	680,948	331,759
Derivatives	38,085	15,444
Financial liabilities:
Demand, money market, and savings deposits	35,379,451	24,355,381
Time deposits	6,201,519	2,667,535
Securities sold under agreements to repurchase	252,119	308,769
Borrowings	3,950,037	905,591
Junior subordinated debentures, at fair value	316,440	323,639
Junior and other subordinated debentures, at amortized cost	97,695	80,922
Derivatives	$ 261,091	$ 271,205