XML 73 R67.htm IDEA: XBRL DOCUMENT v3.25.3

Loans and the Allowance for Credit Losses - Recorded Investment in Non-Accrual Loans (Parenthetical) (Detail)	Sep. 30, 2025 USD ($) Borrower	Dec. 31, 2024 USD ($) Borrower
Financing Receivable, Impaired [Line Items]
Number of borrowers with loan balance greater than one million | Borrower	12	6
Borrowers with large amount of loans outstanding, minimum amount of loans per borrower	$ 1,000,000	$ 1,000,000
Borrowers with large amount of loans outstanding, net	42,500,000	13,100,000
Non-accrual loans	94,463,000	$ 39,752,000
Premier Financial Corporation [Member]
Financing Receivable, Impaired [Line Items]
Non-accrual loans	$ 20,800,000

X

- Definition

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

No definition available.

+ Details

Name:	us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-7

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

Reference 4: 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

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Large amount of nonaccrual loans, outstanding, minimum loan amount per borrower.

+ References

No definition available.

+ Details

Name:	wsbc_LargeAmountOfNonaccrualLoansOutstandingMinimumLoanAmountPerBorrower
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Large amount of nonaccrual loans, outstanding, net loan amount of all borrowers.

+ References

No definition available.

+ Details

Name:	wsbc_LargeAmountOfNonaccrualLoansOutstandingNetLoanAmountOfAllBorrowers
Namespace Prefix:	wsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Number of borrowers with nonaccrual Loan advances outstanding greater than one million U.S. dollars.

+ References

No definition available.

+ Details

Name:	wsbc_NonaccrualLoansOutstandingGreaterThanOneMillionDollarsPerBorrowerNumberOfBorrowers
Namespace Prefix:	wsbc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=wsbc_PremierFinancialCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: