Fair Value Measurement (Schedule Of Carrying Value And Fair Value Of Financial Instruments Not Recorded At Fair Value) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Financial assets:
Equity and other investment securities	$ 76,532	$ 72,959
Investment securities available for sale	9,249,600	3,196,166
Investment securities held to maturity	2,432	2,476
Loans held for sale	49,338	71,647
Loans and leases, net	36,673,816	25,854,846
Restricted equity securities	246,525	47,144
Residential mortgage servicing rights	178,800	185,017	$ 165,807	$ 123,615
Bank owned life insurance	641,922	331,759
Derivatives	39,446	15,444
Financial liabilities:
Securities sold under agreements to repurchase	271,047	308,769
Borrowings	5,950,000	906,175
Junior subordinated debentures, at fair value	297,721	323,639
Junior and other subordinated debentures, at amortized cost	108,066	87,813
Derivatives	261,845	271,205
Carrying Value
Financial assets:
Cash and cash equivalents	3,635,185	1,294,643
Equity and other investment securities	76,532	72,959
Investment securities available for sale	9,249,600	3,196,166
Investment securities held to maturity	2,432	2,476
Loans held for sale	49,338	71,647
Loans and leases, net	36,673,816	25,854,846
Restricted equity securities	246,525	47,144
Residential mortgage servicing rights	178,800	185,017
Bank owned life insurance	641,922	331,759
Derivatives	39,446	15,444
Financial liabilities:
Demand, money market, and savings deposits	37,266,777	24,355,381
Time Deposits	4,319,570	2,710,231
Securities sold under agreements to repurchase	271,047	308,769
Borrowings	5,950,000	906,175
Junior subordinated debentures, at fair value	297,721	323,639
Junior and other subordinated debentures, at amortized cost	108,066	87,813
Derivatives	261,845	271,205
Fair Value
Financial assets:
Cash and cash equivalents	3,635,185	1,294,643
Equity and other investment securities	76,532	72,959
Investment securities available for sale	9,249,600	3,196,166
Investment securities held to maturity	3,175	3,197
Loans held for sale	49,338	71,647
Loans and leases, net	36,049,025	24,399,370
Restricted equity securities	246,525	47,144
Residential mortgage servicing rights	178,800	185,017
Bank owned life insurance	641,922	331,759
Derivatives	39,446	15,444
Financial liabilities:
Demand, money market, and savings deposits	37,266,777	24,355,381
Time Deposits	4,271,184	2,667,535
Securities sold under agreements to repurchase	271,047	308,769
Borrowings	5,949,865	905,591
Junior subordinated debentures, at fair value	297,721	323,639
Junior and other subordinated debentures, at amortized cost	88,823	80,922
Derivatives	$ 261,845	$ 271,205