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Loans and Allowance for Credit Losses (Schedule of Collateral Dependent Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | $ 8,685,815 | $ 8,983,226
Franchise and equipment finance |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 149,022 | 213,477
1-4 single family residential |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 6,310,932 | 6,508,922
Secured Debt |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 235,971 | 187,858
Extent to Which Secured by Collateral | 232,862 | 174,889
Secured Debt | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 152,041 | 94,283
Secured Debt | Commercial Real Estate | Commercial Real Estate Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Extent to Which Secured by Collateral | 152,041 | 91,050
Secured Debt | Commercial and Industrial Portfolio Segment [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 79,864 | 87,565
Secured Debt | Commercial and Industrial Portfolio Segment [Member] | Commercial and industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Extent to Which Secured by Collateral | 76,866 | 78,150
Secured Debt | Franchise and equipment finance |  |
Financing Receivable, Impaired [Line Items] |  |
Amortized Cost | 4,066 | 6,010
Secured Debt | Franchise and equipment finance | Franchise and equipment finance |  |
Financing Receivable, Impaired [Line Items] |  |
Extent to Which Secured by Collateral | $ 3,955 | $ 5,689

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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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