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Allowance for Credit Losses (Non-Accrual Loans and Leases and Loans and Leases Past Due) (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | $ 37,642,413 | $ 37,441,951
Non-Accrual | 98,696 | 74,371
Financing Receivable, Nonaccrual, No Allowance | 4,666 | 4,901
Loans Insured or Guaranteed by US Government Authorities [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 31,300 | 19,300
Greater than 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 94,500 | 40,014
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 15,173 | 45,221
90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 44,902 | 39,542
90 Days or More and Accruing (2) | Loans Insured or Guaranteed by US Government Authorities [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 11,700 | 12,300
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 154,575 | 124,777
Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 37,389,142 | 37,242,803
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 19,631,173 | 19,454,480
Commercial real estate | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,557,768 | 6,482,940
Non-Accrual | 5,382 | 4,359
Financing Receivable, Nonaccrual, No Allowance | 37 | 52
Commercial real estate | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,231,676 | 5,195,605
Non-Accrual | 34,354 | 24,330
Financing Receivable, Nonaccrual, No Allowance | 1,492 | 1,352
Commercial real estate | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,828,960 | 5,704,734
Non-Accrual | 0 | 0
Commercial real estate | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,728,652 | 1,747,302
Non-Accrual | 0 | 0
Commercial real estate | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 284,117 | 323,899
Non-Accrual | 0 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,237 | 1,270
Commercial real estate | Greater than 30 to 59 Days Past Due | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,275 | 3,078
Commercial real estate | Greater than 30 to 59 Days Past Due | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 517 | 3,312
Commercial real estate | 60 to 89 Days Past Due | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 245 | 2,191
Commercial real estate | 60 to 89 Days Past Due | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 253 | 437
Commercial real estate | 90 Days or More and Accruing (2) | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 433
Commercial real estate | 90 Days or More and Accruing (2) | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Total Past Due | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 3,007 | 5,019
Commercial real estate | Total Past Due | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,520 | 5,702
Commercial real estate | Total Past Due | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Total Past Due | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Total Past Due | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 0
Commercial real estate | Current and Other | Commercial Real Estate, Non-owner Occupied Term [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,549,379 | 6,473,562
Commercial real estate | Current and Other | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,194,802 | 5,165,573
Commercial real estate | Current and Other | Multifamily [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,828,960 | 5,704,734
Commercial real estate | Current and Other | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,728,652 | 1,747,302
Commercial real estate | Current and Other | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 284,117 | 323,899
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 9,742,766 | 9,696,404
Commercial | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,544,450 | 5,536,765
Non-Accrual | 26,032 | 14,519
Financing Receivable, Nonaccrual, No Allowance | 3,137 | 3,497
Commercial | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,491,557 | 2,430,127
Non-Accrual | 2,335 | 2,760
Commercial | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,706,759 | 1,729,512
Non-Accrual | 30,593 | 28,403
Commercial | Greater than 30 to 59 Days Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 4,946 | 6,341
Commercial | Greater than 30 to 59 Days Past Due | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 37,219 | 1,647
Commercial | Greater than 30 to 59 Days Past Due | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 26,837 | 22,217
Commercial | 60 to 89 Days Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,493 | 2,101
Commercial | 60 to 89 Days Past Due | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,736 | 1,137
Commercial | 60 to 89 Days Past Due | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 8,551 | 24,178
Commercial | 90 Days or More and Accruing (2) | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 832 | 202
Commercial | 90 Days or More and Accruing (2) | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,966 | 66
Commercial | 90 Days or More and Accruing (2) | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 7,935 | 7,965
Commercial | Total Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 7,271 | 8,644
Commercial | Total Past Due | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 40,921 | 2,850
Commercial | Total Past Due | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 43,323 | 54,360
Commercial | Current and Other | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,511,147 | 5,513,602
Commercial | Current and Other | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,448,301 | 2,424,517
Commercial | Current and Other | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,632,843 | 1,646,749
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 8,079,305 | 8,095,332
Residential | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,128,884 | 6,157,166
Non-Accrual | 0 | 0
Residential | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,950,421 | 1,938,166
Non-Accrual | 0 | 0
Residential | Greater than 30 to 59 Days Past Due | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 14,452 | 282
Residential | Greater than 30 to 59 Days Past Due | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,746 | 4,401
Residential | 60 to 89 Days Past Due | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 9,410
Residential | 60 to 89 Days Past Due | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,411 | 2,373
Residential | 90 Days or More and Accruing (2) | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 30,040 | 26,331
Residential | 90 Days or More and Accruing (2) | Mortgage, net | GNMA Loans |  |
Financing Receivable, Past Due [Line Items] |  |
GNMA Loans past due by 90 days, but not yet repurchased | 1,600 | 1,000
Residential | 90 Days or More and Accruing (2) | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 3,439 | 3,782
Residential | Total Past Due | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 44,492 | 36,023
Residential | Total Past Due | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 11,596 | 10,556
Residential | Current and Other | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,084,392 | 6,121,143
Residential | Current and Other | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,938,825 | 1,927,610
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 189,169 | 195,735
Non-Accrual | 0 | 0
Consumer Portfolio Segment [Member] | Greater than 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 788 | 778
Consumer Portfolio Segment [Member] | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 220 | 519
Consumer Portfolio Segment [Member] | 90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 437 | 326
Consumer Portfolio Segment [Member] | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,445 | 1,623
Consumer Portfolio Segment [Member] | Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | $ 187,724 | $ 194,112

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