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Loans and Allowance for Credit Losses (Schedule of Collateral Dependent Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost	$ 8,555,869	$ 8,983,226
Franchise and equipment finance
Financing Receivable, Impaired [Line Items]
Amortized Cost	134,635	213,477
1-4 single family residential
Financing Receivable, Impaired [Line Items]
Amortized Cost	6,199,657	6,508,922
Secured Debt
Financing Receivable, Impaired [Line Items]
Amortized Cost	231,815	187,858
Extent to Which Secured by Collateral	225,518	174,889
Secured Debt | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost	149,631	94,283
Secured Debt | Commercial Real Estate | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Extent to Which Secured by Collateral	149,208	91,050
Secured Debt | Commercial and Industrial Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Amortized Cost	79,483	87,565
Secured Debt | Commercial and Industrial Portfolio Segment [Member] | Commercial and industrial
Financing Receivable, Impaired [Line Items]
Extent to Which Secured by Collateral	73,615	78,150
Secured Debt | Franchise and equipment finance
Financing Receivable, Impaired [Line Items]
Amortized Cost	2,701	6,010
Secured Debt | Franchise and equipment finance | Franchise and equipment finance
Financing Receivable, Impaired [Line Items]
Extent to Which Secured by Collateral	$ 2,695	$ 5,689

X

- Definition

Financing Receivable, Excluding Accrued Interest, Extent To Which Secured By Collateral

+ References

No definition available.

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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

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