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Allowance for Credit Losses (Non-Accrual Loans and Leases and Loans and Leases Past Due) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | $ 37,709,987 | $ 37,441,951
Non-Accrual | 92,570 | 74,371
Financing Receivable, Nonaccrual, No Allowance | 4,215 | 4,901
Loans Insured or Guaranteed by US Government Authorities [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 36,800 | 19,300
Greater than 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 35,301 | 40,014
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 50,697 | 45,221
90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 61,570 | 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 | 27,900 | 12,300
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 147,568 | 124,777
Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 37,469,849 | 37,242,803
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 19,722,509 | 19,454,480
Commercial real estate | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,407,351 | 6,482,940
Non-Accrual | 4,961 | 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 | 5,230,511 | 5,195,605
Non-Accrual | 32,623 | 24,330
Financing Receivable, Nonaccrual, No Allowance | 1,604 | 1,352
Commercial real estate | Multifamily, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,868,848 | 5,704,734
Non-Accrual | 0 | 0
Commercial real estate | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,946,693 | 1,747,302
Non-Accrual | 0 | 0
Commercial real estate | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 269,106 | 323,899
Non-Accrual | 0 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 972 | 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 | 1,586 | 3,078
Commercial real estate | Greater than 30 to 59 Days Past Due | Multifamily, net |  |
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 | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 528 | 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 | 1,946 | 2,191
Commercial real estate | 60 to 89 Days Past Due | Multifamily, net |  |
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) | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 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, net |  |
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 | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,500 | 5,019
Commercial real estate | Total Past Due | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 3,532 | 5,702
Commercial real estate | Total Past Due | Multifamily, net |  |
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 | Non-owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 6,400,890 | 6,473,562
Commercial real estate | Current and Other | Owner occupied term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,194,356 | 5,165,573
Commercial real estate | Current and Other | Multifamily, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,868,848 | 5,704,734
Commercial real estate | Current and Other | Construction & development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,946,693 | 1,747,302
Commercial real estate | Current and Other | Residential development, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 269,106 | 323,899
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 9,820,124 | 9,696,404
Commercial | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,559,548 | 5,536,765
Non-Accrual | 29,583 | 14,519
Financing Receivable, Nonaccrual, No Allowance | 2,574 | 3,497
Commercial | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,558,633 | 2,430,127
Non-Accrual | 2,166 | 2,760
Commercial | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,701,943 | 1,729,512
Non-Accrual | 23,237 | 28,403
Commercial | Greater than 30 to 59 Days Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 3,714 | 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 | 4,676 | 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 | 16,659 | 22,217
Commercial | 60 to 89 Days Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,700 | 2,101
Commercial | 60 to 89 Days Past Due | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 4,590 | 1,137
Commercial | 60 to 89 Days Past Due | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 20,564 | 24,178
Commercial | 90 Days or More and Accruing (2) | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 0 | 202
Commercial | 90 Days or More and Accruing (2) | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 145 | 66
Commercial | 90 Days or More and Accruing (2) | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,633 | 7,965
Commercial | Total Past Due | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 9,414 | 8,644
Commercial | Total Past Due | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 9,411 | 2,850
Commercial | Total Past Due | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 42,856 | 54,360
Commercial | Current and Other | Term, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,520,551 | 5,513,602
Commercial | Current and Other | Lines of credit & other, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,547,056 | 2,424,517
Commercial | Current and Other | Leases & equipment finance, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,635,850 | 1,646,749
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 7,974,949 | 8,095,332
Residential | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,992,163 | 6,157,166
Non-Accrual | 0 | 0
Residential | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,982,786 | 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 | 0 | 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 | 7,143 | 4,401
Residential | 60 to 89 Days Past Due | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 13,942 | 9,410
Residential | 60 to 89 Days Past Due | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 2,966 | 2,373
Residential | 90 Days or More and Accruing (2) | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 52,652 | 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 | 1,000 | 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 | 2,920 | 3,782
Residential | Total Past Due | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 66,594 | 36,023
Residential | Total Past Due | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 13,029 | 10,556
Residential | Current and Other | Mortgage, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 5,925,569 | 6,121,143
Residential | Current and Other | Home equity loans & lines, net |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,969,757 | 1,927,610
Consumer Portfolio Segment [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 192,405 | 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 | 551 | 778
Consumer Portfolio Segment [Member] | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 461 | 519
Consumer Portfolio Segment [Member] | 90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 220 | 326
Consumer Portfolio Segment [Member] | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | 1,232 | 1,623
Consumer Portfolio Segment [Member] | Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans and Leases | $ 191,173 | $ 194,112

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