Loans and Allowances for Credit Losses Loans and Allowances for Credit Losses, Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	$ 130,800	$ 134,059
Financing Receivable, Nonaccrual, No Allowance	90,734	114,025
Financing Receivable, Nonaccrual, With Allowance	40,066	20,034
Financing Receivable, Nonaccrual, Related Allowance	17,048	6,343
Commercial [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	75,670	74,104
Financing Receivable, Nonaccrual, No Allowance	43,175	62,146
Financing Receivable, Nonaccrual, With Allowance	32,495	11,958
Financing Receivable, Nonaccrual, Related Allowance	16,113	3,994
Commercial [Member] \| Energy [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	4,164	31,091
Financing Receivable, Nonaccrual, No Allowance	4,164	31,091
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
Commercial [Member] \| Healthcare [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	41,438	15,762
Financing Receivable, Nonaccrual, No Allowance	34,951	9,679
Financing Receivable, Nonaccrual, With Allowance	6,487	6,083
Financing Receivable, Nonaccrual, Related Allowance	946	53
Commercial [Member] \| Services [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	27,315	17,170
Financing Receivable, Nonaccrual, No Allowance	1,307	13,686
Financing Receivable, Nonaccrual, With Allowance	26,008	3,484
Financing Receivable, Nonaccrual, Related Allowance	15,167	2,584
Commercial [Member] \| General business [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	2,753	10,081
Financing Receivable, Nonaccrual, No Allowance	2,753	7,690
Financing Receivable, Nonaccrual, With Allowance	0	2,391
Financing Receivable, Nonaccrual, Related Allowance	0	1,357
Commercial real estate [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	7,971	14,262
Financing Receivable, Nonaccrual, No Allowance	400	6,186
Financing Receivable, Nonaccrual, With Allowance	7,571	8,076
Financing Receivable, Nonaccrual, Related Allowance	935	2,349
Loans to individuals [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	47,159	45,693
Financing Receivable, Nonaccrual, No Allowance	47,159	45,693
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	30,066	31,574
Financing Receivable, Nonaccrual, No Allowance	30,066	31,574
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	136	258
Financing Receivable, Nonaccrual, No Allowance	136	258
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	0	0
US Government Agency Insured Loans [Member] \| Loans to individuals [Member] \| Residential mortgage [Member]
Financing Receivable, Nonaccrual [Line Items]
Nonaccrual	16,957	13,861
Financing Receivable, Nonaccrual, No Allowance	16,957	13,861
Financing Receivable, Nonaccrual, With Allowance	0	0
Financing Receivable, Nonaccrual, Related Allowance	$ 0	$ 0

Amount of financing receivable on nonaccrual status with a related allowance.

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- Definition

Amount of financing receivable on nonaccrual status with an 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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)

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