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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, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | $ 37,637,013 | $ 37,680,901
Non-Accrual | 97,548 | 96,478
Loans Insured or Guaranteed by US Government Authorities [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Non-Accrual | 37,100 | 41,500
Greater than 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 102,121 | 57,895
60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 39,742 | 47,304
90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 81,842 | 72,782
90 Days or More and Accruing (2) | Loans Insured or Guaranteed by US Government Authorities [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 30,700 | 32,100
Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 223,705 | 177,981
Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 37,315,760 | 37,406,442
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 19,600,480 | 19,567,672
Commercial real estate | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 6,189,992 | 6,278,154
Non-Accrual | 17,126 | 14,577
Commercial real estate | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,319,529 | 5,270,294
Non-Accrual | 13,613 | 24,755
Commercial real estate | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,735,057 | 5,804,364
Non-Accrual | 0 | 0
Commercial real estate | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,069,727 | 1,983,213
Non-Accrual | 0 | 0
Commercial real estate | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 286,175 | 231,647
Non-Accrual | 0 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 26,522 | 27,954
Commercial real estate | Greater than 30 to 59 Days Past Due | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 4,960 | 1,411
Commercial real estate | Greater than 30 to 59 Days Past Due | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 132 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 37,903 | 0
Commercial real estate | Greater than 30 to 59 Days Past Due | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 422 | 169
Commercial real estate | 60 to 89 Days Past Due | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 60 to 89 Days Past Due | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 361 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | 90 Days or More and Accruing (2) | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | Total Past Due | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 26,522 | 27,954
Commercial real estate | Total Past Due | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,743 | 1,580
Commercial real estate | Total Past Due | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 132 | 0
Commercial real estate | Total Past Due | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 37,903 | 0
Commercial real estate | Total Past Due | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Commercial real estate | Current and Other | Non-owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 6,146,344 | 6,235,623
Commercial real estate | Current and Other | Owner occupied term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,300,173 | 5,243,959
Commercial real estate | Current and Other | Multifamily |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,734,925 | 5,804,364
Commercial real estate | Current and Other | Construction & development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,031,824 | 1,983,213
Commercial real estate | Current and Other | Residential development |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 286,175 | 231,647
Commercial |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 9,944,830 | 9,968,096
Commercial | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,352,598 | 5,537,618
Non-Accrual | 23,722 | 29,483
Commercial | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,950,782 | 2,769,643
Non-Accrual | 23,639 | 6,666
Commercial | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 1,641,450 | 1,660,835
Non-Accrual | 19,448 | 20,997
Commercial | Greater than 30 to 59 Days Past Due | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 1,306 | 1,711
Commercial | Greater than 30 to 59 Days Past Due | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 3,959 | 5,345
Commercial | Greater than 30 to 59 Days Past Due | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 17,019 | 15,318
Commercial | 60 to 89 Days Past Due | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 717 | 893
Commercial | 60 to 89 Days Past Due | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 1,284 | 5,523
Commercial | 60 to 89 Days Past Due | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 15,466 | 17,117
Commercial | 90 Days or More and Accruing (2) | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 420 | 0
Commercial | 90 Days or More and Accruing (2) | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 206
Commercial | 90 Days or More and Accruing (2) | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,161 | 4,478
Commercial | Total Past Due | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,443 | 2,604
Commercial | Total Past Due | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,243 | 11,074
Commercial | Total Past Due | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 37,646 | 36,913
Commercial | Current and Other | Term |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,326,433 | 5,505,531
Commercial | Current and Other | Lines of credit & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,921,900 | 2,751,903
Commercial | Current and Other | Leases & equipment finance |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 1,584,356 | 1,602,925
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 7,912,599 | 7,965,005
Residential | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,829,833 | 5,933,352
Non-Accrual | 0 | 0
Residential | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,082,766 | 2,031,653
Non-Accrual | 0 | 0
Residential | Greater than 30 to 59 Days Past Due | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 0 | 0
Residential | Greater than 30 to 59 Days Past Due | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 9,514 | 5,348
Residential | 60 to 89 Days Past Due | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 18,054 | 17,844
Residential | 60 to 89 Days Past Due | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 3,422 | 5,369
Residential | 90 Days or More and Accruing (2) | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 71,237 | 61,228
Residential | 90 Days or More and Accruing (2) | Mortgage | GNMA Loans |  |
Financing Receivable, Past Due [Line Items] |  |
GNMA Loans past due by 90 days, but not yet repurchased | 2,000 | 2,400
Residential | 90 Days or More and Accruing (2) | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 4,326 | 6,691
Residential | Total Past Due | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 89,291 | 79,072
Residential | Total Past Due | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 17,262 | 17,408
Residential | Current and Other | Mortgage |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 5,740,542 | 5,854,280
Residential | Current and Other | Home equity loans & lines |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 2,065,504 | 2,014,245
Consumer & other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 179,104 | 180,128
Non-Accrual | 0 | 0
Consumer & other | Greater than 30 to 59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 806 | 808
Consumer & other | 60 to 89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 377 | 389
Consumer & other | 90 Days or More and Accruing (2) |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 337 | 179
Consumer & other | Total Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | 1,520 | 1,376
Consumer & other | Current and Other |  |
Financing Receivable, Past Due [Line Items] |  |
Loans and leases | $ 177,584 | $ 178,752

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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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