Loans and Allowances for Credit Losses, Nonaccrual (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 145,469	$ 121,797
Financing Receivable, Nonaccrual, No Allowance	102,380	90,854
Financing receivable, Nonaccrual, With Allowance	43,089	30,943
Financing Receivable, Nonaccrual, Related Allowance	2,692	5,570
Commercial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	110,131	60,297
Financing Receivable, Nonaccrual, No Allowance	67,042	45,531
Financing receivable, Nonaccrual, With Allowance	43,089	14,766
Financing Receivable, Nonaccrual, Related Allowance	2,692	4,020
Commercial [Member] \| Healthcare [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	81,529	41,034
Financing Receivable, Nonaccrual, No Allowance	40,372	34,661
Financing receivable, Nonaccrual, With Allowance	41,157	6,373
Financing Receivable, Nonaccrual, Related Allowance	1,478	946
Commercial [Member] \| Energy [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	17,843	1,399
Financing Receivable, Nonaccrual, No Allowance	17,843	1,399
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial [Member] \| Services [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	3,616	16,228
Financing Receivable, Nonaccrual, No Allowance	1,684	7,835
Financing receivable, Nonaccrual, With Allowance	1,932	8,393
Financing Receivable, Nonaccrual, Related Allowance	1,214	3,074
Commercial [Member] \| General business [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	7,143	1,636
Financing Receivable, Nonaccrual, No Allowance	7,143	1,636
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial real estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	7,320	16,570
Financing Receivable, Nonaccrual, No Allowance	7,320	393
Financing receivable, Nonaccrual, With Allowance	0	16,177
Financing Receivable, Nonaccrual, Related Allowance	0	1,550
Loans to individuals [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	28,018	44,930
Financing Receivable, Nonaccrual, No Allowance	28,018	44,930
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Loans to individuals [Member] \| Residential mortgage [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	18,056	29,791
Financing Receivable, Nonaccrual, No Allowance	18,056	29,791
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Loans to individuals [Member] \| Personal [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	253	134
Financing Receivable, Nonaccrual, No Allowance	253	134
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
US Government Agency Insured Loans \| Loans to individuals [Member] \| Residential mortgage [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	9,709	15,005
Financing Receivable, Nonaccrual, No Allowance	9,709	15,005
Financing receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	$ 0	$ 0

Financing Receivable, Nonaccrual, Related Allowance

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Financing receivable, nonaccrual, with allowance

+ References

No definition available.

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- Definition

Amortized cost of financing receivable on nonaccrual status with no allowance for credit loss. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-16

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)
-Publisher SEC

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)
-Publisher SEC

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-Name Accounting Standards Codification
-Topic 310
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